JP2003046060A - Integrated circuit and mounting method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable mounting of integrated circuits, which are assembled in packages which differ in the number of terminals and the size on the same printed wiring board. SOLUTION: On the same printed wiring board, mounting positions of a part of terminals of integrated circuits which are assembled in two kinds of packages are made common, and mounting positions of remaining terminals are connected with a printed wiring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal arrangement of an integrated circuit and a mounting method on a printed wiring board.

[0002]

2. Description of the Related Art In a set product typified by an AV device such as a television and a video deck, a plurality of models are often manufactured and sold even if the same product has a different function. Different functions are required.

Generally, high-end models are required to have many functions, and popular models are not required to have so many functions.
On the other hand, the number of terminals required for the integrated circuit also differs depending on the required functions, and it is general that the more functions there are, the more terminals are required.

However, in order to improve the efficiency of development and manufacturing of equipment, there is a demand to use the same printed wiring board from high-grade models to popular models. in this case,
It is necessary to use the packaged products of the same shape for all the models, and for popular models, the terminals with unnecessary functions are not used. In the case of a microcomputer often used for controlling devices, these unnecessary terminals can be processed by software.

For example, in the case of a stationary type VCR, a high-end model such as an S-VHS model or a model with a built-in BS tuner has many functions required for a microcomputer and a large number of terminals. On the other hand, a playback-only machine has fewer functions and requires fewer terminals. In the past, in order to realize these with the same printed wiring board, the same package product had to be used, and it was necessary to use the package product having the number of terminals required for high-end models. Further, when using the optimum integrated circuit for each model, it is necessary to create a printed wiring board for each model.

[0006]

In the conventional integrated circuit,
In order to design all models with the same printed wiring board, it is necessary to adopt a package product having the number of terminals required to realize a high-end model, which is a factor of cost increase for popular models. In addition, it is necessary to create a printed wiring board for each model when selecting the optimal package product for the model.
It also lowers the efficiency of development and manufacturing and is a factor of cost increase.

In any case, the conventional integrated circuit has a problem that the cost increases with respect to the popular model that requires the most cost.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an integrated circuit capable of mounting package products having different numbers of terminals on the same printed wiring board.

[0009]

In order to solve the above-mentioned problems, the integrated circuit according to claim 1 of the present invention has terminals on two sides, and at least two or more types having different package sizes and different numbers of terminals. In the packaged product of, the function of any terminal arranged on each side of all packaged products is made the same as the function of all the terminals arranged on the corresponding side of the packaged product with the smallest number of terminals. It is characterized by doing.

According to this first structure, in a packaged product having terminals on two sides, terminals having the same function can be easily connected by printed wiring between a plurality of packaged products by a printed wiring board. , The common design of the printed wiring board becomes easy.

The integrated circuit according to any one of claims 2 to 5 of the present invention has two or more types of packaged products having the same terminal spacing but different size and number of terminals, but at least all of the packaged products. It is characterized in that the functional order of consecutive terminals arranged on one side is the same as the functional order of all terminals arranged on one side of the package product having the smallest number of terminals.

According to this second structure, it is possible to mount continuous terminals, which are arranged on at least one side and have the same function order, at the same position on the printed wiring board, and are arranged on the remaining sides. Only the terminals need to be printed and wired in accordance with the terminal positions of the package product having different sizes and numbers of terminals, which facilitates the common design of the printed wiring board.

The integrated circuit according to any one of claims 6 to 10 of the present invention is a package product of two or more types having terminals on four sides and different in size and number of terminals but having the same terminal interval. The functional order from the corners of the continuous terminals arranged on the two sides with the same corner of all package products is arranged on the two sides with the same corner of the package product with the smallest number of terminals. The feature is that the function order of all terminals is the same.

According to the third structure, it is possible to mount continuous terminals, which are arranged on two sides having the same corner and have the same function order, at the same position on the printed wiring board, and the remaining terminals are mounted. Only the terminals arranged on the two sides may be printed and wired in accordance with the terminal positions of the package product having different sizes and numbers of terminals, which facilitates the common design of the printed wiring board.

The integrated circuit according to the eleventh to fourteenth aspects of the present invention has at least two types of package products having different package sizes and number of terminals, and has a function not present in the package product having a small number of terminals. The terminals are arranged at the ends of each side of a package product with a large number of terminals, and the terminals having the same function are arranged in the same order as the terminals of the package product with a small number of terminals for all package products. .

According to the fourth configuration, the terminals having the same function on each side are the same as the terminal order of the packaged product having a small number of terminals, and the same printed circuit board is used among a plurality of packaged products. Function terminals can be easily connected by printed wiring,
The common design of printed wiring boards becomes easy. In addition, if the terminal spacing is the same, even if there is not much difference in the size of multiple package products, basically it is sufficient to print and wire in parallel between the terminals of the same function on each side of each package product. Can be connected to the printed wiring board, which facilitates common design of printed wiring boards.

According to the fifteenth to seventeenth aspects of the present invention, the integrated circuit has terminals on four sides, and at least two types of integrated circuits having different package sizes and different numbers of terminals are used. It is characterized in that the function of any of the terminals arranged on each side of the product is the same as the function of all the terminals arranged on the corresponding side of the package product having the smallest number of terminals.

According to the fifth structure, in a packaged product having terminals on four sides, terminals having the same function can be easily printed by printed wiring between a plurality of packaged products by a printed wiring board. Connection becomes possible and the common design of printed wiring boards becomes easy.

According to the eighteenth to twentieth aspects of the present invention, at least two types of integrated circuits having terminals on four sides and different in package size and number of terminals are all of the packages. It is characterized in that the function of any of the terminals arranged on the three sides of the product is the same as the function of all the terminals arranged on the corresponding three sides of the package product having the smallest number of terminals.

According to the sixth configuration, in a packaged product having terminals on four sides, at least three terminals having the same function have the same terminal order as that of the packaged product having a small number of terminals. Similarly, terminals having the same function can be easily connected by printed wiring between a plurality of packaged products by the printed wiring board, and the common design of the printed wiring board is facilitated.

An integrated circuit according to claim 21 of the present invention is
In the terminal array of the package product with a large number of terminals in at least two types of integrated circuits that have terminals in an array on the bottom surface of the package and the size of the package and the number of terminals are different, but the terminal intervals are the same. The feature is that the functions of the terminals in the same layout shape part are the same as those of the package terminal array having a small number of terminals.

According to the seventh configuration, in a packaged product having terminals on the bottom surface of the package in an array, the terminal arrangement of a part of the packaged product having a large number of terminals can be changed to all the terminals of the packaged product having a small number of terminals. Since the terminal arrangement order is the same as that of the function, it is possible to mount a package product with a small number of terminals on the same part, and it is possible to design a common printed wiring board that can mount multiple package products.

In the integrated circuit mounting method according to claim 22 to claim 24 of the present invention, the package shape is large and the number of terminals is large on the printed wiring board in the integrated circuit according to claim 1 to 21. The feature is that an integrated circuit having a small package shape and a small number of terminals is mounted inside the mounting position of the integrated circuit having a large number of terminals. Particularly, in the integrated circuit mounting method according to any one of claims 23 to 24, some terminals are mounted at the same position on the printed wiring board in a package product having a large number of terminals and a package product having a small number of terminals. It is characterized by things.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows the first embodiment.
FIG. 3 is a diagram showing a shape of a package of the integrated circuit and a positional relationship at the time of mounting on the printed wiring board. In FIG. 1, reference numeral 1 is a first integrated circuit having a large package shape and a large number of terminals, and 2 is a second integrated circuit having a small package shape and a small number of terminals. The second integrated circuit 2 can be arranged inside the arrangement position of the circuit 1. The first integrated circuit 1 has 32 terminals a1 to a32,
It is assumed that the integrated circuit 2 has 24 terminals b1 to b24. Further, each integrated circuit has terminals on two sides of the package, and the first side 3 of the first integrated circuit 1
Have terminals a1 to a16, and the second side 4 of the first integrated circuit 1 has terminals a17 to a32. Similarly, the first side 3 of the second integrated circuit 2 has a terminal b1. ~ B12, the second
The second side 4 of the integrated circuit 2 has terminals b13 to b24.

FIG. 2 is a diagram showing a pattern shape of a printed wiring board on which the integrated circuit according to the first embodiment of the present invention is mounted. In FIG. 2, c1 to c32 are positions on the printed wiring board where the terminals a1 to a32 of the first integrated circuit 1 are mounted, and d1 to d32.
Reference numeral 24 denotes terminals b1 to 1 of the second integrated circuit 2 on the printed wiring board.
The position where b24 is mounted is shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ..., A31 is at c31.
In addition, a32 is mounted on c32. Similarly, the terminal b1 of the second integrated circuit 2 is connected to the mounting position d1 on the printed wiring board by b2.
Is d2, ..., b23 is d23, b24 is d
It is mounted on 24.

In the first embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 are arranged on the first side 3 of the first integrated circuit 1. Terminals a1 to a
It has the same function as any one of the 16 terminals. The second
B13 to b arranged on the second side 4 of the integrated circuit 2 of
The function of 24 has the same function as any one of the terminals a17 to a32 arranged on the second side 4 of the first integrated circuit 1. Specifically, b1 and a1, b2 and a3, ...
The terminal functions of b11 and a15, b12 and a16 are the same, b13 and a18, b14 and a19 ,.
.., b23 and a30, and b24 and a31 have the same terminal function. The arrangement of the terminal functions of the second integrated circuit 2,
The arrangement of terminals in the first integrated circuit 1 having the same functions as those of the second integrated circuit 2 is arranged so as not to be reversed in the same order. Therefore, as shown in FIG. 2, in the printed wiring board, d1 and c1, d2 and c3, ..., D11 and c1.
5, d12 and c16, d13 and c18, d14 and c1
.., d23 and c30, d24 and c31 are connected by printed wiring.

As described above, the functions of all the terminals arranged on the first side 3 and the second side 4 of the second integrated circuit 2 are changed so that the order of the functions is not reversed. By arranging them on the first side 3 and the second side 4 of the integrated circuit 1, it is possible to connect terminals having the same function without the printed wiring patterns intersecting on the printed wiring board.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is as follows.
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the first embodiment.

(Second Embodiment) FIG. 3 shows the second embodiment.
It is a figure which shows the shape of the package of the integrated circuit of to 4 and the positional relationship at the time of mounting on a printed wiring board. In FIG. 3, 1 is a first integrated circuit having a large package shape and a large number of terminals, and 2 is a second integrated circuit having a small package shape and a small number of terminals.
Integrated circuit of the first integrated circuit 1 on the printed wiring board.
The second integrated circuit 2 can be arranged inside the arrangement position by sharing the mounting positions of some terminals. The first integrated circuit 1 has 32 terminals a1 to a32, and the second integrated circuit 2 has 24 terminals b1 to b24. Further, each integrated circuit has terminals on two sides of the package, terminals a1 to a16 are provided on the first side 3 of the first integrated circuit 1, and second sides 4 of the first integrated circuit 1 are provided. Have terminals a17 to a32. Similarly, terminals b1 to b12 are provided on the first side 3 of the second integrated circuit 2 and terminals b13 are provided on the second side 4 of the second integrated circuit 2. To b24.

FIG. 4 is a diagram showing a pattern shape of a printed wiring board on which the integrated circuit according to the second embodiment of the present invention is mounted. In FIG. 4, c1 to c32 are positions on the printed wiring board where the terminals a1 to a32 of the first integrated circuit 1 are mounted, and d1 to d32.
Reference numeral 24 denotes terminals b1 to 1 of the second integrated circuit 2 on the printed wiring board.
The position where b24 is mounted is shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ..., A31 is at c31.
In addition, a32 is mounted on c32. Similarly, the terminal b1 of the second integrated circuit 2 is connected to the mounting position d1 on the printed wiring board by b2.
Is d2, ..., b23 is d23, b24 is d
It is mounted on 24. Here, d1 to d12 are c5 to c1
It is the same position as 6. Specifically, d1, c5, and d2
And c6, d3 and c7, ..., d10 and c14, d
11 and c15 and d12 and c16 are in the same position. That is, in the second embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the terminal a5 arranged on the first side 3 of the first integrated circuit 1. ~ A
16 has the same function. Specifically, in FIG. 3, b1 and a5, b2 and a6, ..., B11 and a1
5, b12 and a16 have the same terminal function. therefore,
On the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 can be mounted at the same positions as the terminals arranged on the first side 3 of the first integrated circuit 1. Becomes That is, as shown in FIG. 4, the terminals a5 to a16 arranged on the first side 3 of the first integrated circuit 1 are mounted at the mounting position c on the printed wiring board.
The terminals b1 to b12, which are mounted on the printed wiring board, are mounted on the printed wiring board at the same mounting positions d1 (= c5) to d12 (=). c1
Implemented in 6).

Furthermore, in the second embodiment, the functions of the terminals b13 to b24 arranged on the second side 4 of the second integrated circuit 2 and the second side 4 of the first integrated circuit 1 are arranged. The terminals a17 to a28 are the same. Specifically, b13 and a
17, b14 and a18, ..., b23 and a27,
The terminal functions of b24 and a28 are the same. As shown in FIG. 4, in the printed wiring board, b13 and a17, b14 and a18 ,.
..., b23 and a27, and b24 and a28 are connected by printed wiring.

In this way, by making the functions of the terminals on the opposite side (second side 4) in the same arrangement order as the terminals having the same mounting position the same, the mounting positions of the terminals of the second integrated circuit 2 are made. d1
3 to d24 and the mounting positions c17 to c28 of the terminals of the first integrated circuit 1 having the same function, and the terminals having the same function are connected in a parallel pattern without the printed wiring patterns intersecting on the printed wiring board. Is easily possible. This is because the package width difference between the first integrated circuit 1 and the second integrated circuit 2 is small and the mounting positions d1 of the terminals of the two integrated circuits are small.
~ D12 and c1 to c16 on the printed wiring board, or d
When the distances 13 to d24 and c17 to c32 on the printed wiring board are small and many wires cannot be passed between them, the pattern wiring in each side direction (the direction parallel to the first side 1 or the second side 2) is It is especially effective because it disappears.

(Third Embodiment) FIG. 5 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to a third embodiment of the present invention is mounted. In FIG. 5, c1 to c32 are positions on the printed wiring board where the terminals a1 to a32 of the first integrated circuit 1 are mounted, and d1 to d24 are terminals of the second integrated circuit 2 on the printed wiring board. The positions where b1 to b24 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
a31 is mounted on c31 and a32 is mounted on c32. Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is d2, ..., B23 is d23.
In addition, b24 is mounted in d24. Similar to the second embodiment, d1 to d12 are the same positions as c5 to c16.
Specifically, d1 and c5, d2 and c6, d3 and c7, ...
..., d10 and c14, d11 and c15, and d12 and c16 are at the same position. That is, in the third embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the terminal a5 arranged on the first side 3 of the first integrated circuit 1. ~ A16 has the same function. Specifically, b1 and a5, b2 and a6, ...
, B11 and a15, and b12 and a16 have the same terminal function. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 are connected to the first terminals of the first integrated circuit 1.
It is possible to mount at the same position as the terminal arranged on the side 3 of. That is, as shown in FIG. 5, the first integrated circuit 1
The terminals a5 to a16 arranged on the first side 3 are mounted at the mounting positions c5 to c16 on the printed wiring board. Similarly, the terminals a5 to a16 arranged on the first side 3 of the second integrated circuit 2 are arranged. b1-b
12 is the same mounting position d1 (= c5) on the printed wiring board
It is mounted on d12 (= c16).

Further, in the third embodiment, the functions of the terminals b13 to b24 arranged on the second side 4 of the second integrated circuit 2 are arranged on the second side 4 of the first integrated circuit 1. It has the same function as any one of the terminals a17 to a32. Specifically, in FIG. 3, b13, a17, b14
, A18, ..., b23 and a31, b24 and a3
The two terminal functions are the same. The arrangement of terminal functions arranged on the second side 4 of the second integrated circuit 2 has the same function as the second integrated circuit 2 on the second side 4 of the first integrated circuit 1. The terminals are arranged in the same order and are arranged so as not to be inverted. Therefore, as shown in FIG. 5, in the printed wiring board, d13 and c17, d14 and c18 ,.
3 and c31, d24 and c32 are connected by printed wiring.

As described above, the functions of all the terminals arranged on the second side 4 of the second integrated circuit 2 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. By arranging on the side 4 of 2, it is possible to connect terminals having the same function without the printed wiring patterns intersecting on the printed wiring board.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is:
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the third embodiment.

In the third embodiment, the second integrated circuit of the second
To be placed on the side 4 of the terminal and to have the same function as the first
The number of combinations with the terminals arranged on the second side 4 of the integrated circuit 1 is increased, and there is an effect that the degree of freedom in determining the terminal function is increased in the functional design of the integrated circuit.

(Fourth Embodiment) FIG. 6 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to a fourth embodiment of the present invention is mounted. In FIG. 6, c1 to c32 are positions where terminals a1 to a32 of the first integrated circuit 1 are mounted on the printed wiring board, and d1 to d24 are terminals of the second integrated circuit 2 on the printed wiring board. The positions where b1 to b24 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
a31 is mounted on c31 and a32 is mounted on c32. Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is d2, ..., B23 is d23.
In addition, b24 is mounted in d24. Similar to the second and third embodiments, d1 to d12 are the same positions as c5 to c16. Specifically, d1 and c5, d2 and c
6, d3 and c7, ..., d10 and c14, d11
And c15 and d12 and c16 are in the same position.
That is, in the fourth embodiment, the first integrated circuit 2 of the first integrated circuit 2
The functions of the terminals b1 to b12 arranged on the side 3 and the terminals a5 to a16 arranged on the first side 3 of the first integrated circuit 1.
And have the same function. Specifically, b1, a5, b
2 and a6, ..., b11 and a15, b12 and a16
Have the same terminal function. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 should be mounted at the same positions as the terminals arranged on the first side 3 of the first integrated circuit 1. Is possible. That is, as shown in FIG. 5, the terminals a5 to 5a arranged on the first side 3 of the first integrated circuit 1 are connected.
a16 is mounted at mounting positions c5 to c16 on the printed wiring board, and similarly terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 are at the same mounting positions on the printed wiring board. It is mounted on d1 (= c5) to d12 (= c16).

Furthermore, in the fourth embodiment, the function of the terminals b13 to b24 arranged on the second side 4 of the second integrated circuit 2 is that some of the terminals are the second integrated circuit of the first integrated circuit 1. Has the same function as any one of the terminals a17 to a32 arranged on the side 4 of the first integrated circuit 1, and the remaining terminals are the terminals of the first integrated circuit 1 and the first integrated circuit of the second integrated circuit. This is the same as a terminal other than the terminal having the same function as the side 3. Specifically, in FIG. 3, b13 and a17, b14 and a1
8, ..., b22 and a29, b23 and a32, b
The terminal functions of 24 and a4 are the same. The arrangement of terminal functions arranged on the second side 4 of the second integrated circuit 2
The terminals having the same function as the second integrated circuit 2 on the second side 4 of the integrated circuit 1 are arranged in the same order and are arranged so as not to be inverted. In addition, the first integrated circuit 1 of the first integrated circuit 1 having the same function as the second side 4 of the second integrated circuit 2
The terminals placed on side 3 of the are also clockwise (or counterclockwise)
Are arranged in the same order. Therefore, as shown in FIG. 6, in the printed wiring board, d13 and c17, d14 and c18, ...
., D22 and c29, d23 and c31, d24 and c4 are connected by printed wiring.

As described above, the functions of all the terminals arranged on the second side 4 of the second integrated circuit 2 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. By arranging on the side 4 of 2 and the first side 3, it is possible to connect terminals having the same function on the printed wiring board without the printed wiring patterns intersecting each other.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is as follows.
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the fourth embodiment.

In the fourth embodiment, the second integrated circuit of the second
Which has the same function as the terminal arranged on side 4 of the
The number of combinations with the terminals arranged in the integrated circuit 1 is further increased, and there is an effect that the degree of freedom in determining the terminal function is further increased in the functional design of the integrated circuit.

As described above, in the first to fourth embodiments, the first integrated circuit 1 has a larger number of terminals than the second integrated circuit 2, and it is possible to provide more functions accordingly. is there. In this case, the function added to the first integrated circuit uses a terminal other than the terminal having the same function as the second integrated circuit 2. Then, the terminals having the same function of the two integrated circuits are connected to each other on the printed wiring board. The function provided in the second integrated circuit 2 is realized by using a terminal included in the second integrated circuit or a terminal included in the first integrated circuit 1 and having the same function as the second integrated circuit. However, the function provided only in the first integrated circuit 1 is realized by using a terminal other than the terminal having the same function as the second integrated circuit among the terminals provided in the first integrated circuit 1 to obtain the same function. It is possible to select and mount two types of packages having different package sizes, the number of terminals, and the functions provided on the printed wiring board, and it is possible to use the optimum integrated circuit required by the device.

In the first to fourth embodiments, for simplification, the first integrated circuit has 32 terminals and the second integrated circuit has 24 terminals. Needless to say, the same applies to other numbers. The shape of the package has terminals on two sides.
IP (Dual-Inline Package),
SOP (Small Outlook Package)
e), SOJ (Small Outlet J-le)
added Package), SOI (Small O
A package such as utline I-leaded Package) is applicable.

Furthermore, in the second to fourth embodiments, the function of the terminal arranged on the first side 3 of the second integrated circuit 2 is changed to the first
Among the terminals arranged on the first side 3 of the integrated circuit 1 of FIG. 3, the terminals are the same as the terminals continuous from the end (a16 to a5 in this case), and the terminals of the two types of integrated circuits on the printed wiring board are Although the mounting position is the same position, it may be the same as the continuous terminal at any position on the first side of the first integrated circuit.

(Fifth Embodiment) FIG. 7 shows the fifth embodiment.
It is a figure which shows the package shape of the integrated circuits of to 8 and the positional relationship at the time of mounting on a printed wiring board. In FIG. 7, 1 is a first integrated circuit having a large package shape and a large number of terminals, and 2 is a second integrated circuit having a small package shape and a small number of terminals.
The second integrated circuit 2 can be arranged on the printed wiring board inside the arrangement position of the first integrated circuit 1 with the mounting positions of some terminals being common. The first integrated circuit 1 has 56 terminals a1 to a56, and the second integrated circuit 2 has 40 terminals b1 to b40. Further, each integrated circuit has terminals on four sides of the package, the terminals a1 to a16 are provided on the first side 3 of the first integrated circuit 1, and the second sides 4 of the first integrated circuit 1 are provided. Has terminals a17 to a28, the third side 5 of the first integrated circuit 1 has terminals a29 to a44, and the fourth side 6 of the first integrated circuit 1 has terminals a45 to a56. Similarly, on the first side 3 of the second integrated circuit 2, terminals b1 to b12 are
Terminals b13 to b20 on the second side 4 of the integrated circuit 2 of
The terminals b21 to b32 are provided on the third side 5 of the second integrated circuit 2.
On the fourth side 6 of the second integrated circuit 2, terminals b33 to b33
Has 40.

FIG. 8 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to the fifth embodiment of the present invention is mounted. In FIG. 8, c1 to c56 are positions on the printed wiring board where the terminals a1 to a56 of the first integrated circuit 1 are mounted, and d1 to d56.
Reference numeral 40 denotes terminals b1 to 1 of the second integrated circuit 2 on the printed wiring board.
The position where b40 is mounted is shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ..., A55 is at c55.
In addition, a56 is mounted on c56. Similarly, the terminal b1 of the second integrated circuit 2 is connected to the mounting position d1 on the printed wiring board by b2.
Is d2, ..., b39 is d39, b40 is d
It is mounted on 40. Here, d1 to d12 and d13 to
d20 is the same position as c5 to c16 and c17 to c24. Specifically, d1 and c5, d2 and c6, ...
.... d11 and c15, d12 and c16, d13 and c1
7, d14 and c18, ..., d19 and c23, d
20 and c24 are in the same position. That is, in the fifth embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the terminal a5 arranged on the first side 3 of the first integrated circuit 1. To a16 have the same function as that of the terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 and the second function of the first integrated circuit 1.
Has the same function as the terminals a17 to a24 arranged on the side 4 of. Specifically, in FIG. 7, b1, a5, b2
, A6, ..., b11 and a15, b12 and a16,
b13 and a17, b14 and a18, ..., b19
And a23 and b20 and a24 have the same terminal function. Therefore, on the printed wiring board, the first side 3 of the second integrated circuit 2 is
At the same position as the terminals arranged on the first side 3 of the first integrated circuit 1 and the second integrated circuit 2
It is possible to mount the terminal arranged on the side 4 of the first integrated circuit 1 at the same position as the terminal arranged on the second side 4 of the first integrated circuit 1. That is, as shown in FIG. 8, the terminals a5 to a16 arranged on the first side 3 of the first integrated circuit 1 are placed at the mounting positions c5 to c16 on the printed wiring board, and the terminals a5 to a16 The terminals a17 to a24 arranged on the side 4 are mounted at the mounting positions c17 to c24 on the printed wiring board. Similarly, the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 are mounted.
Are the same mounting positions d1 (= c5) to d1 on the printed wiring board.
2 (= c16), the terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 are mounted at the same mounting positions d13 (= c17) to d20 (= c24) on the printed wiring board. To be done.

Further, in the fifth embodiment, the functions of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 are arranged on the third side 5 of the first integrated circuit 1. The same function as any one of the terminals a29 to a44
B33 to b arranged on the fourth side 6 of the integrated circuit 2
The function of 40 has the same function as any one of the terminals a45 to a56 arranged on the fourth side 6 of the first integrated circuit 1. Specifically, in FIG. 7, b21 and a29,
b22 and a30, ..., b31 and a43, b32
And a44 have the same terminal function, and b33, a45 and b
34, a46, ..., b39 and a53, and b40 and a56 have the same terminal function. This second integrated circuit 2
The arrangement of terminal functions arranged on the third side 5 of the first integrated circuit 1, the arrangement of terminals having the same function as the second integrated circuit 2 on the third side 5 of the first integrated circuit 1, and the second Of the terminal functions arranged on the fourth side 6 of the integrated circuit 2 and the arrangement of terminals having the same function as the second integrated circuit 2 on the fourth side 6 of the first integrated circuit 1. Are arranged in the same order so that they cannot be reversed. Therefore, as shown in FIG. 8, in the printed wiring board, d21 and c29, d22 and c30 ,.
1 and c43, d32 and c44, d33 and c45, d34
And c46, ..., d39 and c53, d40 and c5
6 are connected by printed wiring.

In this way, the functions of all the terminals arranged on the third side 5 of the second integrated circuit 2 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. The first integrated circuit is arranged so that the functions of all the terminals arranged on the side 5 of 3 and similarly arranged on the fourth side 6 of the second integrated circuit 2 are not reversed in order of the functions. By disposing it on the fourth side 6 of No. 1, it is possible to connect terminals having the same function on the printed wiring board without the printed wiring patterns intersecting each other.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is:
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the fifth embodiment.

As described above, the first integrated circuit 1 and the second integrated circuit 1
By making the mounting positions of the two sides (the first side 1 and the second side 2) of the integrated circuit 2 of (1) the same, the mounting position of the third side 5 of the first integrated circuit 1 and the second side The distance between the mounting positions of the third side 5 of the integrated circuit 2 and the distance between the mounting position of the fourth side 6 of the first integrated circuit 1 and the mounting position of the fourth side 6 of the second integrated circuit 2 are Wider, the degree of freedom in pattern design is increased when terminals with the same function that are connected on the same side are connected by printed wiring. Similarly, it has the effect of becoming larger.

(Sixth Embodiment) FIG. 9 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to a sixth embodiment of the present invention is mounted. In FIG. 9, c1 to c56 are positions where the terminals a1 to a56 of the first integrated circuit 1 are mounted on the printed wiring board, and d1 to d40 are terminals of the second integrated circuit 2 on the printed wiring board. The positions where b1 to b40 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
The a55 is mounted on the c55, and the a56 is mounted on the c56. Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is at d2, ..., b39 is d39.
In addition, b40 is mounted on d40. Where d1 to d1
2 and d13 to d20 are c5 to c16 and c17 to c2
It is the same position as 4. Specifically, d1, c5, and d2
, C6, ..., d11 and c15, d12 and c1
6, d13 and c17, d14 and c18, ..., d
19 and c23 and d20 and c24 are in the same position. That is, in the sixth embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the terminal a5 arranged on the first side 3 of the first integrated circuit 1. ~ A
16 has the same function as 16 and functions of the terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 and arranged on the second side 4 of the first integrated circuit 1. Terminals a17 to a2
4 has the same function. Specifically, referring to FIG.
b1 and a5, b2 and a6, ..., b11 and a15,
b12 and a16, b13 and a17, b14 and a18, ...
The terminal functions of b19 and a23 and b20 and a24 are the same. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 are connected to the first integrated circuit 1
The terminals arranged on the second side 4 of the second integrated circuit 2 are arranged on the second side 4 of the first integrated circuit 1 at the same positions as the terminals arranged on the first side 3 of. It can be mounted at the same position as the terminal. That is, as shown in FIG.
A5 to a1 arranged on the first side 3 of the integrated circuit 1
6 are terminals a17 to a24 arranged on the second side 4 of the first integrated circuit 1 at mounting positions c5 to c16 on the printed wiring board.
Are mounted at mounting positions c17 to c24 on the printed wiring board. Similarly, terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 have the same mounting position d1 on the printed wiring board.
(= C5) to d12 (= c16), the second integrated circuit 2
The terminals b13 to b20 arranged on the second side 4 of the same are the same mounting positions d13 (= c17) to d20 on the printed wiring board.
(= C24).

Further, in the sixth embodiment, the functions of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 and the third side 5 of the first integrated circuit 1 are arranged. Terminals a29 to a24 are the same and the functions of the terminals b33 to b40 arranged on the fourth side 6 of the second integrated circuit 2 and the functions of the terminals b33 to b40 arranged on the fourth side 6 of the first integrated circuit 1. Terminal a49
a56 is the same. Specifically, b21 and a29, b
22 and a30, b31 and a39, b32 and a40, b33 and a49, b34 and a50, ...
., B39 and a55, and b40 and a56 have the same terminal function. As shown in FIG. 4, in the printed wiring board, d21 and c2
9, d22 and c30, ..., d31 and c39, d
32 and c40, d33 and c49, d34 and c50, ...
..., d39 and c55, and d40 and c56 are connected by printed wiring.

As described above, the opposite side in the same arrangement order as the terminals having the same mounting position on the printed wiring board (the third side 5 for the first side 1 and the fourth side 6 for the second side 4) By making the functions of the terminals of the first integrated circuit 1 the same, the mounting positions c29 to c40 of the terminals of the first integrated circuit 1 having the same function as the mounting positions d21 to d32 of the terminals of the second integrated circuit 2, and the second Terminal mounting positions c49 to c5 of the first integrated circuit 1 having the same functions as the terminal mounting positions d33 to d40 of the integrated circuit 2.
It is possible to easily connect terminals 6 having the same function in parallel pattern 6 on the printed wiring board without the printed wiring patterns intersecting each other. This is because the package width difference between the first integrated circuit 1 and the second integrated circuit 2 is small and the mounting positions d21 to d32 and c29 to c4 of the terminals of the two integrated circuits are small.
4 on the printed wiring board or d33 to d40 and c45
~ C56 is particularly effective because there is no pattern wiring in each side direction (direction parallel to the third side 5 or the fourth side 6) when the spacing on the printed wiring board is narrow and many wirings cannot be passed between them. Becomes

(Seventh Embodiment) FIG. 10 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to a seventh embodiment of the present invention is mounted. In FIG. 10, c1 to c56 are positions where the terminals a1 to a56 of the first integrated circuit 1 are mounted on the printed wiring board, and d1 to d40 are terminals of the second integrated circuit 2 on the printed wiring board. The positions where b1 to b40 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
, A55 is mounted on c55, and a56 is mounted on c56.
Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is d2, ...
In 39, b40 is mounted in d40. Where d1
d12 and d13 to d20 are c5 to c16 and c17 to
It is the same position as c24. Specifically, d1 and c5,
d2 and c6, ..., d11 and c15, d12 and c
16, d13 and c17, d14 and c18, ...
d19 and c23 and d20 and c24 are at the same position. That is, in the seventh embodiment, the second integrated circuit 2
The functions of the terminals b1 to b12 arranged on the first side 3 of
Terminals a5 to 5 arranged on the first side 3 of the first integrated circuit 1
a16 has the same function as that of the second integrated circuit 2
The functions of the terminals b13 to b20 arranged on the side 4 of the
A17-a arranged on the second side 4 of the integrated circuit 1
24 has the same function. Specifically, in FIG. 7, b1 and a5, b2 and a6, ..., B11 and a1
5, b12 and a16, b13 and a17, b14 and a1
The terminal functions of b19 and a23 and b20 and a24 are the same. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 are located at the same positions as the terminals arranged on the first side 3 of the first integrated circuit 1,
First terminals are arranged on the second side 4 of the second integrated circuit 2.
The integrated circuit 1 can be mounted at the same position as the terminal arranged on the second side 4. That is, as shown in FIG. 10, the terminal a arranged on the first side 3 of the first integrated circuit 1
5 to a16 are mounting positions c5 to c16 on the printed wiring board,
The terminal a17 arranged on the second side 4 of the first integrated circuit 1.
To a24 are mounted at mounting positions c17 to c24 on the printed wiring board, and terminals b1 to b12 similarly arranged on the first side 3 of the second integrated circuit 2 are the same mounting on the printed wiring board. The terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 at the positions d1 (= c5) to d12 (= c16).
Is the same mounting position d13 (= c17) on the printed wiring board.
It is mounted on d20 (= c24).

Furthermore, in the seventh embodiment, the function of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 is that some of the terminals are the third of the first integrated circuit 1. Has the same function as any one of the terminals a29 to a44 arranged on the side 5 and the remaining terminals are terminals a45 to a56 arranged on the fourth side 6 of the first integrated circuit 1. Has the same function as any of the terminals. In addition, the second integrated circuit 2
The function of the terminals b33 to b40 arranged on the fourth side 6 is that the terminal a arranged on the fourth side 6 of the first integrated circuit 1.
It has the same function as any of the terminals 45 to a56.
Specifically, in FIG. 7, b21 and a29, b22 and a
30, ..., b29 and a37, b30 and a38,
b31 and a47, b32 and a49, b33 and a49, b
34 and a50, ..., B39 and a55, and b40 and a56 have the same terminal function. This second integrated circuit 2
Of the terminal functions arranged on the third side 5 and the fourth side 6 of the second integrated circuit 2 on the third side 5 and the fourth side 6 of the first integrated circuit 1. Arrangement of terminals having the same function as the terminals arranged on the third side 5 and the fourth side 6 is clockwise (or counterclockwise) in the same order, and is arranged so as not to be reversed. There is. Therefore, as shown in FIG. 10, in the printed wiring board, d21 and c29, d22 and c30, ...
., D29 and c37, d30 and c38, d31 and c4
7, d32 and c49, d33 and c49, d34 and c5
0, ..., d39 and c55, d40 and c56 are connected by printed wiring.

As described above, the functions of all the terminals arranged on the third side 5 of the second integrated circuit 2 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. 3, the functions of all the terminals arranged on the side 5 and the fourth side 6 and arranged on the fourth side 6 of the second integrated circuit 2 are not reversed in order of their functions. By arranging on the fourth side 6 of the first integrated circuit 1, it is possible to connect terminals having the same function on the printed wiring board without the printed wiring patterns intersecting each other.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is:
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the seventh embodiment.

In the seventh embodiment, the third integrated circuit of the second integrated circuit is used.
The number of combinations of the terminals arranged on the side 5 and the fourth side 6 of the terminal and the terminals arranged on the first integrated circuit 1 having the same function are increased, and the terminal is designed at the time of designing the function of the integrated circuit. This has the effect of increasing the degree of freedom in determining functions.

(Embodiment 8) FIG. 11 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit of Embodiment 8 of the present invention is mounted. In FIG. 11, c1 to c56 are positions where the terminals a1 to a56 of the first integrated circuit 1 are mounted on the printed wiring board, and d1 to d40 are terminals of the second integrated circuit 2 on the printed wiring board. The positions where b1 to b40 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
, A55 is mounted on c55, and a56 is mounted on c56.
Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is d2, ...
In 39, b40 is mounted in d40. Where d1
d12 and d13 to d20 are c5 to c16 and c17 to
It is the same position as c24. Specifically, d1 and c5,
d2 and c6, ..., d11 and c15, d12 and c
16, d13 and c17, d14 and c18, ...
d19 and c23 and d20 and c24 are at the same position. That is, in the eleventh embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the terminal a arranged on the first side 3 of the first integrated circuit 1.
5 to a16 have the same function and the functions of the terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2;
The terminal a17 arranged on the second side 4 of the first integrated circuit 1.
~ A24 has the same function. Specifically, in FIG. 7, b1 and a5, b2 and a6, ..., B11 and a
15, b12 and a16, b13 and a17, b14 and a1
The terminal functions of b19 and a23 and b20 and a24 are the same. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 are located at the same positions as the terminals arranged on the first side 3 of the first integrated circuit 1,
First terminals are arranged on the second side 4 of the second integrated circuit 2.
The integrated circuit 1 can be mounted at the same position as the terminal arranged on the second side 4. That is, as shown in FIG. 11, the terminal a arranged on the first side 3 of the first integrated circuit 1
5 to a16 are mounting positions c5 to c16 on the printed wiring board,
The terminal a17 arranged on the second side 4 of the first integrated circuit 1.
To a24 are mounted at mounting positions c17 to c24 on the printed wiring board, and terminals b1 to b12 similarly arranged on the first side 3 of the second integrated circuit 2 are the same mounting on the printed wiring board. The terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 at the positions d1 (= c5) to d12 (= c16).
Is the same mounting position d13 (= c17) on the printed wiring board.
It is mounted on d20 (= c24).

Furthermore, in the eighth embodiment, the function of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 is that some of the terminals are the third terminals of the first integrated circuit 1. It has the same function as any one of the terminals a29 to a44 arranged on the side 5, and the remaining terminals are terminals a25 to a28 arranged on the second side 4 of the first integrated circuit 1 or , Has the same function as any one of the terminals a45 to a56 arranged on the fourth side 6. Also, the fourth integrated circuit of the second integrated circuit 2
The functions of the terminals b33 to b40 arranged on the side 6 of FIG. And the remaining terminals are the first sides 3 of the first integrated circuit 1.
Has the same function as any one of the terminals a1 to a5. Specifically, in FIG. 7, b21 and a2
5, b22 and a30, ..., b30 and a38, b
31 and a47, b32 and a48, b33 and a49, b3
4 and a50, ..., b38 and a54, b39 and a
4, b40 and a5 have the same terminal function. The arrangement of the terminal functions arranged on the third side 5 and the fourth side 6 of the second integrated circuit 2, and the first side 3 and the second side of the first integrated circuit 1.
Of the terminals having the same function as the terminals arranged on the third side 5 and the fourth side 6 of the second integrated circuit 2 on the side 4, the third side 5 and the fourth side 6 of FIG. Are arranged in the same order in a clockwise (or counterclockwise) direction so as not to be reversed. Therefore, as shown in FIG. 10, in the printed wiring board, d21 and c25, d22 and c30, ..., D30 and c3.
8, d31 and c47, d32 and c48, d33 and c4
9, d34 and c50, ..., d38 and c54, d
39 and c4, and d40 and c5 are connected by printed wiring.

In this way, the functions of all the terminals arranged on the third side 5 of the second integrated circuit 2 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. The functions of all the terminals arranged on the second side 4, the third side 5, and the fourth side 6 and arranged on the fourth side 6 of the second integrated circuit 2 are reversed in the order of the functions. By arranging on the fourth side 6 and the first side 3 of the first integrated circuit 1 so that there is no problem, terminals having the same function are connected on the printed wiring board without the printed wiring patterns intersecting each other. Things are possible.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is:
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the seventh embodiment.

In the eighth embodiment, the third integrated circuit of the second integrated circuit is used.
The number of combinations of the terminals arranged on the side 5 and the fourth side 6 and the terminals arranged on the first integrated circuit 1 which have the same function are further increased. This has the effect of increasing the degree of freedom in determining the terminal function.

(Embodiment 9) FIG. 12 is a diagram showing the shape of the package of the integrated circuit of Embodiments 9 to 10 and the positional relationship when it is mounted on a printed wiring board. In FIG. 12, reference numeral 1 is a first integrated circuit having a large package shape and a large number of terminals, and 2 is a second integrated circuit having a small package shape and a small number of terminals. The second integrated circuit 2 can be arranged inside the arrangement position of the integrated circuit 1. The first integrated circuit 1 has 56 terminals a1 to a56, and the second integrated circuit 2 has 40 terminals b1 to b40. In addition, each integrated circuit has terminals on four sides of the package, and terminals a1 to a16 are provided on the first side 3 of the first integrated circuit 1 and the first integrated circuit 1
Terminals a17 to a28 on the second side 4 of the first integrated circuit 1, terminals a29 to a44 on the third side 5 of the first integrated circuit 1, and a terminal a45 on the fourth side 6 of the first integrated circuit 1. To a56, similarly on the first side 3 of the second integrated circuit 2 the terminal b
1 to b12, terminals b13 to b20 on the second side 4 of the second integrated circuit 2, terminals b21 to b32 on the third side 5 of the second integrated circuit 2, and second integrated circuits. 4th side of 2 6
Has terminals b33 to b40.

FIG. 13 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to the ninth embodiment of the present invention is mounted.
In FIG. 13, c1 to c56 are positions on the printed wiring board where the terminals a1 to a56 of the first integrated circuit 1 are mounted, and d1 is
To d40 are terminals b of the second integrated circuit 2 on the printed wiring board
The positions where 1 to b40 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board,
2 to c2, a3 to c3, ..., a55 to c5
5, a56 is mounted on c56. Similarly, the terminal b1 of the second integrated circuit 2 is connected to the mounting position d1 on the printed wiring board by b
2 is mounted on d2, ..., B39 is mounted on d39, and b40 is mounted on d40.

In the ninth embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 are arranged on the first side 3 of the first integrated circuit 1. Terminals a1 to a
It has the same function as any one of the 16 terminals. The second
B13 to b arranged on the second side 4 of the integrated circuit 2 of
The function of 20 has the same function as any one of the terminals a17 to a28 arranged on the second side 4 of the first integrated circuit 1. Similarly, the functions of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 are the same as those of the terminals a29 to a44 arranged on the third side 5 of the first integrated circuit 1. Of the terminals b33 to b40 having the same function as the terminals of the first integrated circuit 1 arranged on the fourth side 6 of the second integrated circuit 2 are arranged on the fourth side 6 of the first integrated circuit 1. Terminal a45 ~
It has the same function as any terminal of a56. Specifically, b1 and a1, b2 and a2, ..., B11 and a14, b12 and a15 have the same terminal function, and b1
3 and a17, b14 and a20, ..., b19 and a
25, b20 and a27 have the same terminal function, and b21
And a30, b22 and a31, ..., b31 and a4
2, b32 and a43 have the same terminal function, and b33 and a45, b34 and a49, ..., b39 and a5
5, b40 and a56 have the same terminal function. This second
The arrangement of the terminal functions of the integrated circuit 2 and the arrangement of the terminals having the same function as the second integrated circuit 2 in the first integrated circuit 1 are the same in the clockwise (or counterclockwise) order. It is arranged so that it will not be reversed. Therefore, as shown in FIG. 13, in the printed wiring board, d1 and c1, d2 and c2, ...
., D11 and c14, d12 and c15, d13 and c1
7, d14 and c20, ..., d19 and c25, d
20 and c27, d21 and c30, d22 and c31, ...
..., d31 and c42, d32 and c43, d33 and c
45, d34 and c49, ..., d39 and c55,
d40 and c56 are connected by printed wiring.

In this way, the first side 3 of the second integrated circuit 2,
The functions of all the terminals arranged on the second side 4, the third side 5, and the fourth side 6 are arranged in the first integrated circuit 1 so that the order of the functions is not reversed. By arranging on the side 3, the second side 4, the third side 5 and the fourth side 6, it is possible to connect terminals having the same function without the printed wiring patterns intersecting on the printed wiring board. Is.

The combination with the terminal of the first integrated circuit 1 having the same function as the terminal function of the second integrated circuit 2 is:
It suffices that the printed wiring patterns do not intersect on the printed wiring board, and the order is not limited to that of the ninth embodiment.

(Embodiment 10) FIG. 14 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit of Embodiment 10 of the present invention is mounted. In FIG. 14, c1 to c56 are positions where the terminals a1 to a56 of the first integrated circuit 1 are mounted on the printed wiring board, and d1 to d40 are second positions on the printed wiring board.
The positions where the terminals b1 to b40 of the integrated circuit 2 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
..., a55 is mounted on c55, and a56 is mounted on c56. Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is at d2, ..., B3.
9 is mounted on d39, and b40 is mounted on d40.

In the tenth embodiment, the second integrated circuit 2
Terminals which are not provided in the first integrated circuit 1 but are provided only in the first integrated circuit 1 are collectively arranged at the four corners of the first integrated circuit. Specifically, a1, a2, a15, a16, a17,
a18, a27, a28, a29, a30, a43, a
Reference numerals 44, a45, a46, a55, and a56 are terminals added to the first integrated circuit 1 for adding a function.

In the tenth embodiment, the second integrated circuit 2
The functions of the terminals b1 to b12 arranged on the first side 3 of
Terminals a3 to 3 arranged on the first side 3 of the first integrated circuit 1
a14 is the same and the second side 4 of the second integrated circuit 2
Functions of the terminals b13 to b20 arranged on the second side 4 of the first integrated circuit 1 are the same as those of the terminals a19 to a26 arranged on the second side 4 of the first integrated circuit 1. And the terminals a31 to a42 arranged on the third side 5 of the first integrated circuit 1 have the same function, and the terminals b21 to b32 arranged on the fourth side 6 of the second integrated circuit 2 have the same function. The functions of the terminals b33 to b40 arranged on the same side and the terminals a47 to a54 arranged on the fourth side 6 of the first integrated circuit 1 are the same. Specifically, b1 and a3, b2 and a4, ..., b11
And a14, b12 and a14, b13 and a19, b14 and a20, ..., b19 and a25, b20 and a2.
6, b21 and a31, b22 and a32, ..., b
31 and a41, b32 and a42, b33 and a47, b3
4 and a48, ..., b39 and a53, b40 and a
The terminal functions of 54 are the same. As shown in FIG. 14, in the printed wiring board, d1 and c3, d2 and c4 ,.
And c14, d12 and c14, d13 and c19, d14 and c20, ..., d19 and c25, d20 and c2
6, d21 and c31, d22 and c32, ..., d
31 and c41, d32 and c42, d33 and c47, d3
4 and c48, ..., d39 and c53, d40 and c
54 is connected by printed wiring.

As described above, the terminals having the function not provided in the second integrated circuit 2 but provided only in the first integrated circuit 1 are arranged evenly in the four corners of the first integrated circuit. The number of terminals arranged on each side of the second integrated circuit 2 is equal to the number of terminals arranged on each side of the second integrated circuit 2. By making the same function as the above, the mounting positions d1 to d12 of the terminals of the second integrated circuit 2,
Mounting positions c3 of terminals of the first integrated circuit 1 having the same functions as d13 to d20, d21 to d32, and d33 to d40
~ C14, c19 to c26, c31 to c42, c47 ~
The c54 can be easily connected on the printed wiring board by a parallel pattern without the printed wiring patterns intersecting each other.

This is because the difference between the package widths of the first integrated circuit 1 and the second integrated circuit 2 is small, and the mounting positions d1 to d12 and c1 to c16 on the printed wiring board of the terminals of the two integrated circuits are small. Alternatively, the mounting positions d13 to d20 and c17 to c2
8 on the printed wiring board or mounting positions d21 to d32
And c29 to c44 spacing on the printed wiring board or d33 to
When the distance between d40 and c45 to c56 on the printed wiring board is narrow and many wirings cannot be passed between them, each side direction (first side 3, second side 4, third side 5 or fourth side) This is particularly effective because there is no wiring in the pattern (parallel to 6).

(Embodiment 11) FIG. 15 is a diagram showing the shape of the package of the integrated circuit of Embodiments 11 to 12 and the positional relationship when it is mounted on a printed wiring board. In FIG. 15, 1 is the first with a large package shape and a large number of terminals.
Integrated circuit 2 is a second integrated circuit having a small package shape and a small number of terminals, and is a first integrated circuit on a printed wiring board.
The second integrated circuit 2 can be arranged inside the arrangement position of the integrated circuit 1 by sharing the mounting positions of some terminals. The first integrated circuit 1 has 56 terminals a1 to a56,
The second integrated circuit 2 has 40 terminals b1 to b40. Further, each integrated circuit has terminals on four sides of the package, the terminals a1 to a16 are provided on the first side 3 of the first integrated circuit 1, and the second sides 4 of the first integrated circuit 1 are provided.
Has terminals a17 to a28, the third side 5 of the first integrated circuit 1 has terminals a29 to a44, and the fourth side 6 of the first integrated circuit 1 has terminals a45 to a56. Similarly, the terminals b1 to b12 are provided on the first side 3 of the second integrated circuit 2.
On the second side 4 of the second integrated circuit 2, terminals b13 to b
20 on the third side 5 of the second integrated circuit 2
To b32 on the fourth side 6 of the second integrated circuit 2
33 to b40.

FIG. 16 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit according to the eleventh embodiment of the present invention is mounted. In FIG. 16, c1 to c56 are positions on the printed wiring board where the terminals a1 to a56 of the first integrated circuit 1 are mounted,
d1 to d40 indicate positions on the printed wiring board where the terminals b1 to b40 of the second integrated circuit 2 are mounted. That is, the terminal a1 of the first integrated circuit 1 is mounted at the mounting position c1 on the printed wiring board.
A2 to c2, a3 to c3, ..., a55
Is mounted on c55 and a56 is mounted on c56. Similarly second
The terminal b1 of the integrated circuit 2 is a mounting position d1 on the printed wiring board.
, B2 to d2, ..., b39 to d39, b
40 is mounted on d40. Here, d1 to d12 are c
It is the same position as 3 to c14. Specifically, d1 and c
3, d2 and c4, ..., d11 and c14, d12
And c15 are in the same position. That is, in the eleventh embodiment, the functions of the terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 and the first functions of the first integrated circuit 1 are described.
Has the same function as the terminals a3 to a14 arranged on the side 3 of. Specifically, in FIG. 15, b1, a3, b2
, A4, ..., B11 and a14, and b12 and a15 have the same terminal function. Therefore, the second on the printed wiring board
The terminal arranged on the first side 3 of the integrated circuit 2 can be mounted at the same position as the terminal arranged on the first side 3 of the first integrated circuit 1. That is, as shown in FIG. 16, the terminals a3 to 3 arranged on the first side 3 of the first integrated circuit 1 to
Although a14 is mounted at mounting positions c3 to c14 on the printed wiring board, terminals b1 to b12 arranged on the first side 3 of the second integrated circuit 2 are the same mounting positions on the printed wiring board. It is mounted on d1 (= c3) to d12 (= c14).

Furthermore, in the eleventh embodiment, the functions of the terminals b13 to b20 arranged on the second side 5 of the second integrated circuit 2 are the same as those of the first side 3 and the second side of the first integrated circuit 1. A17-a arranged on the second side 4 continuing from the corner of the side 4 of
The terminals b33 to b40, which have the same function as 24 and are arranged on the fourth side 6 of the second integrated circuit 2, have the same functions as those of the first side 3 and the fourth side of the first integrated circuit 1. It has the same function as the terminals a49 to a56 arranged on the fourth side 6 continuous from the corner of the side 6. Specifically, in FIG. 15, b12 and a1
7, b13 and a18, ..., b19 and a23, b
20 and a24 have the same terminal function, and b33 and a4
9, b34 and a50, ..., b39 and a55, b
The terminal functions of 40 and a56 are the same. Therefore, FIG.
As shown in, the printed wiring board has d12 and c17, and d13 and c.
18, ..., d19 and c23, d20 and c24,
d33 and c49, d34 and c50, ..., d39
And c55 and d40 and c56 are connected by printed wiring.

The functions of the terminals b21 to b32 arranged on the third side 5 of the second integrated circuit 2 are the same as those of the first integrated circuit 1
Has the same function as any one of the terminals a29 to a44 arranged on the third side 5 of FIG. Specifically, in FIG. 15, b21 and a31, b22 and a32, ..., b31
And a41 and b32 and a42 have the same terminal function,
As shown in FIG. 16, in the printed wiring board, d21, c31, d2
2 and c32, ..., d31 and c41, d32 and c4
2 are connected by printed wiring. In this way, the functions of all the terminals arranged on the third side 5 of the second integrated circuit 2 are prevented from being reversed in the order of the functions of the first integrated circuit 1.
By arranging on the third side 5 of, the terminals having the same function can be connected on the printed wiring board without the printed wiring patterns intersecting each other.

The combination of the terminal arranged on the third side 5 of the second integrated circuit 2 and the terminal of the first integrated circuit 1 having the same function has a printed wiring pattern on the printed wiring board. As long as they do not intersect, the order is the 11th embodiment.
It is not limited to.

As described above, the first integrated circuit 2 of the first integrated circuit 2
The mounting positions of the terminals arranged on the side 3 of the first integrated circuit 1
Common to the mounting position of the terminals arranged on the first side 3 of
Further, the functions of the terminals arranged on the second side 4 and the fourth side 6 of the second integrated circuit 2 are arranged on the second side 4 and the fourth side 6 of the first integrated circuit 1. Among the terminals, the terminals arranged at the end on the first side 3 side continuously have the same function as the same number of terminals, so that the mounting positions d13 to d20 of the terminals of the second integrated circuit 2 and Mounting positions c17 to c2 of terminals of the first integrated circuit 1 having the same functions as d33 to d40
4, c49 to c56 can be connected in parallel pattern on the printed wiring board without the printed wiring patterns intersecting each other. This is because the difference between the package widths of the first integrated circuit 1 and the second integrated circuit 2 is small, and the mounting positions d12 to d20 and c17 to c28 of the terminals of the two integrated circuits are arranged on the printed wiring board or the mounting positions thereof. Positions d33-d40 and c45-c
56 is effective because there is no pattern wiring in each side direction (parallel to the second side 4 or the fourth side 6) when the space on the printed wiring board 56 is narrow and many wirings cannot be passed between them. . Further, it is possible to widen the intervals between the mounting positions d21 to d32 and c29 to c44. Therefore, it is possible to design the pattern when terminals having the same function are connected to each other by printed wiring. Because the degree of freedom increases,
The degree of freedom in designing the terminal function of the integrated circuit is similarly increased.

(Embodiment 12) FIG. 17 is a diagram showing a pattern shape of a printed wiring board on which an integrated circuit of Embodiment 12 of the present invention is mounted. In FIG. 17, c1 to c56 are positions on the printed wiring board where the terminals a1 to a56 of the first integrated circuit 1 are mounted, and d1 to d40 are second positions on the printed wiring board.
The positions where the terminals b1 to b40 of the integrated circuit 2 are mounted are shown. That is, the terminal a1 of the first integrated circuit 1 is at the mounting position c1 on the printed wiring board, a2 is at c2, a3 is at c3, ...
..., a55 is mounted on c55, and a56 is mounted on c56. Similarly, the terminal b1 of the second integrated circuit 2 is at the mounting position d1 on the printed wiring board, b2 is at d2, ..., B3.
9 is mounted on d39, and b40 is mounted on d40. here,
d1 to d12 are the same positions as c3 to c14. Specifically, d1 and c3, d2 and c4, ..., d11
And c14 and d12 and c15 are in the same position. That is, in the twelfth embodiment, the first integrated circuit 2 of the first integrated circuit 2
Of the terminals b1 to b12 arranged on the side 3 of the first integrated circuit 1 and the terminals a3 to a14 arranged on the first side 3 of the first integrated circuit 1.
And have the same function. Specifically, referring to FIG.
b1 and a3, b2 and a4, ..., b11 and a14,
The terminal functions of b12 and a15 are the same. Therefore, on the printed wiring board, the terminals arranged on the first side 3 of the second integrated circuit 2 should be mounted at the same positions as the terminals arranged on the first side 3 of the first integrated circuit 1. Is possible. That is,
As shown in FIG. 17, the terminals a3 to a14 arranged on the first side 3 of the first integrated circuit 1 are mounted positions c3 on the printed wiring board.
Terminals b1 to b12 which are mounted on the printed wiring board at the same mounting positions d1 (= c3) to d12 (= c14). )
Will be implemented in.

Furthermore, in the twelfth embodiment, the functions of the terminals b13 to b20 arranged on the second side 4 of the second integrated circuit 2 are the same as those of the first side 3 and the second side of the first integrated circuit 1. A17-a arranged on the second side 4 continuing from the corner of the side 4 of
The terminals b33 to b40, which have the same function as 24 and are arranged on the fourth side 6 of the second integrated circuit 2, have the same functions as the first side 3 and the fourth side of the first integrated circuit 1. It has the same function as the terminals a49 to a56 arranged on the fourth side 6 continuous from the corner of 6. Specifically, in FIG. 15, b12 and a1
7, b13 and a18, ..., b19 and a23, b
20 and a24 have the same terminal function, and b33 and a4
9, b34 and a50, ..., b39 and a55, b
The terminal functions of 40 and a56 are the same. Therefore, FIG.
As shown in, the printed wiring board has d12 and c17, and d13 and c.
18, ..., d19 and c23, d20 and c24,
d33 and c49, d34 and c50, ..., d39
And c55 and d40 and c56 are connected by printed wiring.

Of the terminals arranged on the third side 5 of the second integrated circuit 2, the terminals b21 and b32 arranged at the extreme ends.
Has the same function as any one of the terminals c25 to 28b21 arranged on the second side 4 and the terminals c45 to 48 arranged on the fourth side 6 of the first integrated circuit 1. However, the functions of the remaining terminals b22 to b31 are the same as those of the terminals a29 to a44 arranged on the third side 5 of the first integrated circuit 1.
Has the same function as any of the terminals. Specifically,
5, b21 and a25, b22 and a32, ...
., B31 and a41, b32 and a49 have the same terminal function, and as shown in FIG. 17, in the printed wiring board d21 and c
25, d22 and c32, ..., d31 and c41, d
32 and c49 are connected by printed wiring. Like this second
In order not to reverse the order of the functions of all the terminals arranged on the third side 5 of the integrated circuit 2, the terminals arranged at the ends are adjacent to the intersection of the first integrated circuit 1. Side (second
The side 4 or the fourth side 6), and the remaining terminals are the first
By arranging the integrated circuit 1 on the third side 5 of the integrated circuit 1, it is possible to connect terminals having the same function on the printed wiring board without the printed wiring patterns intersecting each other.

The combination of the terminals arranged on the third side 5 of the second integrated circuit 2 and the terminals of the first integrated circuit 1 having the same function has a printed wiring pattern on the printed wiring board. As long as they do not intersect, the order is the 11th embodiment.
It is not limited to. In the twelfth embodiment, the third
Although the functions of the terminals at both ends of the side 5 are the same as those of the terminals arranged on the adjacent side (the second side 4 or the fourth side 6) that intersects, the terminals arranged at one end It is okay to do it alone.

As described above, the mounting positions of the terminals arranged on the first side 3 of the second integrated circuit 2 are set to the first side 3 of the first integrated circuit 1 as in the eleventh embodiment. The mounting position of the terminal to be arranged is common to the mounting position of the second integrated circuit 2.
The functions of the terminals arranged on the sides 4 and 6 of the
Among the terminals arranged on the second side 4 and the fourth side 6 of the integrated circuit 1, the same function as the same number of terminals is continuously provided from the terminal arranged on the end on the first side 3 side. By doing so, the mounting positions d13 to d20 and d33 of the terminals of the second integrated circuit 2 are
It is possible to connect the mounting positions c17 to c24 and c49 to c56 of the terminals of the first integrated circuit 1 having the same function as to -d40 in parallel patterns on the printed wiring board without the printed wiring patterns intersecting each other. . This is because the package width difference between the first integrated circuit 1 and the second integrated circuit 2 is small and the mounting positions d12 to d20 and c1 of the terminals of the two integrated circuits are small.
7-c28 spacing on the printed wiring board or mounting position d33
-D40 and c45 to c56 are close to each other on the printed wiring board, and when many wirings cannot be passed between them, there is no wiring in each side direction (direction parallel to the second side 4 or the fourth side 6). Therefore, it is effective. Further, the mounting positions d21 to d32
Since it is possible to widen the distance between c29 and c44, it is possible to increase the degree of freedom in pattern design when terminals having the same function are connected to each other by printed wiring. The degree of freedom in designing the terminal functions of the integrated circuit is also increased. Furthermore, in the twelfth embodiment, the function of the terminal arranged on the third side 5 of the second integrated circuit 2 is changed to the second side 4 of the first integrated circuit 1.
Since it is the same as the third side 5 and the fourth side 6, there is an effect that the degree of freedom in determining the terminal function of each integrated circuit is further increased.

As described above, in the fifth to twelfth embodiments,
The first integrated circuit 1 has a larger number of terminals than the second integrated circuit 2 and can have more functions correspondingly.
In this case, the function added to the first integrated circuit uses a terminal other than the terminal having the same function as the second integrated circuit 2. Then, the terminals having the same function of the two integrated circuits are connected to each other on the printed wiring board. The function provided in the second integrated circuit 2 is realized by using a terminal included in the second integrated circuit or a terminal included in the first integrated circuit 1 and having the same function as the second integrated circuit. However, the function that only the first integrated circuit 1 has is that, among the terminals that the first integrated circuit 1 has,
By implementing using a terminal other than the terminal having the same function as the second integrated circuit, it is possible to select and mount two types of packages having different package sizes, the number of terminals, and the functions provided on the same printed wiring board. This makes it possible to use the optimum integrated circuit required by the equipment.

In the fifth to twelfth embodiments, the first integrated circuit has 56 terminals and the second integrated circuit has 40 terminals for simplification. It goes without saying that the same applies to other numbers. In addition, the package shape has terminals on four sides.
FP (Quad Flat Package) and QF
J (Quad Flat J-leaded Pack
age), QFI (Quad Flat I-lead)
ed Package), QFN (Quad Flat)
A package such as Non-leaded Package) is applicable.

In the description of the embodiments, the rectangular package has been described, but it goes without saying that the same applies to other shapes. In the description of the embodiment, two types of packages having different sizes have been described, but it goes without saying that the same applies to three or more types of packages.

[0090]

As described above, according to the present invention, when at least two kinds of integrated circuits having different package shapes and different numbers of terminals are selected and mounted on the same printed wiring board, the printed wiring can be mounted. It is possible to mount an integrated circuit with a small package shape and a small number of terminals inside the mounting position of an integrated circuit with a large package shape and a large number of terminals without complicating the pattern of Even if the most suitable integrated circuit is selected, a common design can be achieved so that it can be mounted on the same printed wiring board, the efficiency of development and manufacturing can be improved, and the cost of the device can be reduced. You can

[Brief description of drawings]

FIG. 1 is a diagram showing a shape relation of a package of an integrated circuit according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a shape of a printed wiring board on which the integrated circuit according to the first embodiment of the present invention is mounted.

FIG. 3 is a diagram showing a shape relation of a package of an integrated circuit according to the second to fourth embodiments of the present invention.

FIG. 4 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a second embodiment of the present invention is mounted.

FIG. 5 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a third embodiment of the present invention is mounted.

FIG. 6 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a fourth embodiment of the present invention is mounted.

FIG. 7 is a diagram showing a shape relation of a package of an integrated circuit according to the fifth to eighth embodiments of the present invention.

FIG. 8 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a fifth embodiment of the present invention is mounted.

FIG. 9 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a sixth embodiment of the present invention is mounted.

FIG. 10 is a diagram showing the shape of a printed wiring board on which an integrated circuit according to a seventh embodiment of the present invention is mounted.

FIG. 11 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to an eighth embodiment of the present invention is mounted.

FIG. 12 is a diagram showing a shape relation of a package of the integrated circuit according to the ninth to tenth embodiments of the present invention.

FIG. 13 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to a ninth embodiment of the present invention is mounted.

FIG. 14 is a diagram showing the shape of a printed wiring board on which an integrated circuit according to Embodiment 10 of the present invention is mounted.

FIG. 15 is a diagram showing a shape relationship of a package of the integrated circuit according to the eleventh to twelfth embodiments of the present invention.

FIG. 16 is a diagram showing a shape of a printed wiring board on which an integrated circuit according to an eleventh embodiment of the present invention is mounted.

FIG. 17 is a diagram showing the shape of a printed wiring board on which an integrated circuit according to Embodiment 12 of the present invention is mounted.

[Explanation of symbols]

1 First integrated circuit 2 Second integrated circuit 3 First side 4 second side 5 Third side 6 fourth side

Claims (23)

[Claims] 1. In at least two types of integrated circuits having terminals on two sides and having different package sizes and different numbers of terminals, the one having a larger package shape and a larger number of terminals is first.
And the one having a smaller package shape and a smaller number of terminals as compared with the first integrated circuit is the second integrated circuit,
When one of the two parallel sides is the first side and the other is the second side, the functions of all the terminals arranged on the first side of the second integrated circuit are determined by the first integrated circuit. The same function as any one of the terminals arranged on the first side of the circuit,
Integrated circuit having the same function as all the terminals arranged on the second side of the first integrated circuit, and the function of any terminal arranged on the second side of the first integrated circuit. circuit. 2. A first integrated circuit having at least two types of packages, which have different package sizes and different numbers of terminals but have the same terminal spacing, and which have a large package shape and a large number of terminals. In the second integrated circuit having a smaller package shape and a smaller number of terminals than the first integrated circuit, the functions of all the terminals arranged on at least one side of the second integrated circuit, and the first 1 of the second integrated circuits among terminals arranged on at least one side of the integrated circuit
An integrated circuit characterized by having the same function as the number of consecutive terminals arranged on the side. 3. The integrated circuit according to claim 2, wherein the integrated circuit has terminals on two sides. 4. The integrated circuit according to claim 3, wherein a side having the same function as a terminal arranged on one side of the second integrated circuit is defined as a first side, and a parallel opposite side is formed. In the case of the second side, the terminal arranged on the first side of the first integrated circuit faces the terminal having the same function as the terminal on the first side of the second integrated circuit. An integrated circuit characterized in that the terminals arranged on the second side all have the same function as the terminals arranged on the second side of the second integrated circuit. 5. The integrated circuit according to claim 2, wherein the integrated circuit has terminals on four sides. 6. A package having a large shape and a large number of terminals in at least two types of integrated circuits having terminals on four sides and having different sizes and numbers of packages but having the same terminal spacing. Is a first integrated circuit, and one having a smaller package shape and a smaller number of terminals than the first integrated circuit is a second integrated circuit, and two sides orthogonal to each other with one corner as a vertex are referred to as a first side. When the second side is the opposite side parallel to the first side is the third side and the opposite side parallel to the second side is the fourth side, the first side and the second side of the second integrated circuit are the same. The functions of all the terminals arranged on the second side and the functions of all the terminals arranged on the first side and the second side of the first integrated circuit are continuous from the corner of the first integrated circuit. The number of terminals arranged on the first side and the number of terminals arranged on the second side of the second integrated circuit are the same. Integrated circuit. 7. The integrated circuit according to claim 6, wherein the functions of all terminals arranged on the third side of the second integrated circuit are set to the third side of the first integrated circuit. It has the same function as any of the terminals arranged, and the fourth integrated circuit of the second integrated circuit
The integrated circuit is characterized in that the function of all the terminals arranged on the side of is equal to the function of any terminal arranged on the fourth side of the first integrated circuit. 8. The integrated circuit according to claim 6, wherein the function of the terminal on the third side facing the terminal on the first side of the first integrated circuit is the same as that of the terminal on the second side of the second integrated circuit. The functions of all the terminals arranged on the third side are the same, and the functions of the terminals on the fourth side facing the terminals on the second side of the first integrated circuit are the same as those of the second integrated circuit. An integrated circuit having the same function as that of all terminals arranged on the side of 4. 9. The integrated circuit according to claim 8, wherein at least one or more of the terminals arranged on the third side of the second integrated circuit are continuous from one or both corners. The function of the terminal is the same as that of the terminal arranged on the second side or the fourth side of the first integrated circuit, and the functions of the remaining terminals are the same as those of the third side of the first integrated circuit. An integrated circuit characterized by having the same function. 10. The integrated circuit according to claim 8, wherein at least one or more of the terminals arranged on the third side of the second integrated circuit are continuous from one or both corners. The function of the terminal is the same as that of the terminal arranged on the second side or the fourth side of the first integrated circuit, and the functions of the remaining terminals are the same as those of the third side of the first integrated circuit. Of the terminals arranged on the fourth side of the second integrated circuit, the function of at least one or more terminals continuous from one or both corners is the same as the function of the first integrated circuit. An integrated circuit having the same function as the terminals arranged on the first side or the third side, and making the functions of the remaining terminals the same as the functions of the fourth side of the first integrated circuit. . 11. Among at least two types of integrated circuits having different package sizes and different numbers of terminals, a package having a larger shape and a larger number of terminals is compared with the first integrated circuit and the first integrated circuit. The one having a smaller package shape and a smaller number of terminals is defined as a second integrated circuit, and among the terminals of the first integrated circuit, terminals having a function not present in the second integrated circuit are formed on the respective sides of the first integrated circuit. An integrated circuit characterized by being placed at the end of 12. The integrated circuit according to claim 11, wherein the terminal intervals are the same. 13. The integrated circuit according to claim 11, which has terminals on two sides. 14. The integrated circuit according to claim 11, which has terminals on four sides. 15. In at least two kinds of integrated circuits having terminals on four sides and different in package size and number of terminals, one having a larger package shape and more terminals is the first integrated circuit, A package having a smaller package shape and a smaller number of terminals than the first integrated circuit is a second integrated circuit, and two sides orthogonal to each other with one corner as a vertex are the first side and the second side.
, The opposite side parallel to the first side is the third side, and the opposite side parallel to the second side is the fourth side. All terminals have the same function as that of any terminal arranged on the first side of the first integrated circuit, and all terminals arranged on the second side of the second integrated circuit. The function of the second integrated circuit of the first integrated circuit
The same as the function of any terminal arranged on the side of the second integrated circuit, and the function of all the terminals arranged on the third side of the second integrated circuit is set to the third side of the first integrated circuit. It has the same function as any of the terminals arranged, and the fourth integrated circuit of the second integrated circuit
The integrated circuit is characterized in that the function of all the terminals arranged on the side of is equal to the function of any terminal arranged on the fourth side of the first integrated circuit. 16. The integrated circuit according to claim 15, wherein at least two types of packages have the same terminal spacing, and functions of all the terminals arranged on each side of the second integrated circuit. Among the terminals arranged on the corresponding sides of the first integrated circuit, the same number of consecutive terminals as the terminals arranged on the respective sides of the second integrated circuit. An integrated circuit characterized by. 17. The integrated circuit according to claim 16, wherein the function of the terminals arranged on the second and fourth sides of the second integrated circuit is the same as that of the first integrated circuit. The integrated circuit is characterized in that the terminals at the corners of the side and the second side and the terminals at the corners of the first side and the fourth side are identical. 18. A package having a large package shape and a large number of terminals in at least two types of integrated circuits having terminals on four sides and different in package size and number of terminals, but having the same terminal spacing. Is a first integrated circuit, and one having a smaller package shape and a smaller number of terminals than the first integrated circuit is a second integrated circuit, and two sides orthogonal to each other with one corner as a vertex are referred to as a first side. When the second side is the second side, the opposite side parallel to the first side is the third side, and the opposite side parallel to the second side is the fourth side, the first, second, and The functions of all the terminals arranged on the fourth side are the same as those of the terminals arranged on the first, second and fourth sides of the first integrated circuit. An integrated circuit having the same function as the number of consecutive terminals arranged on the second and fourth sides. 19. The integrated circuit according to claim 18, wherein at least one of the terminals arranged on the third side of the second integrated circuit is continuous from one or both corners.
The functions of one or more terminals are the same as those of the terminals arranged on the second side or the fourth side of the first integrated circuit, and the functions of the remaining terminals are the same as those of the third integrated circuit of the first integrated circuit. An integrated circuit characterized in that it has the same function as the side. 20. The integrated circuit according to claim 18 or 19, wherein the function of the terminals arranged on the second and fourth sides of the second integrated circuit is changed to the first integrated circuit. The integrated circuit is characterized in that the terminals of the first side and the second side and the terminals of the first side and the fourth side are the same. 21. At least two types of integrated circuits having different package sizes and the same number of terminals but having the same terminal interval, the first integrated circuit having a large package shape and a large number of terminals; In a second integrated circuit having a smaller package shape and a smaller number of terminals than the first integrated circuit, the second integrated circuit is arranged on the printed wiring board inside the arrangement position of the first integrated circuit. A method of mounting an integrated circuit, characterized in that the terminals having the same function on each side of the first integrated circuit and the second integrated circuit are printed and wired. 22. A first integrated circuit having at least two types of packages having different package sizes and different numbers of terminals, but having the same terminal interval, and having a large package shape and a large number of terminals; In a second integrated circuit having a smaller package shape and a smaller number of terminals as compared with the first integrated circuit, the first integrated circuit and the second integrated circuit are arranged continuously on at least one side and are the same. A method for mounting an integrated circuit, characterized in that terminals in functional order are mounted at the same position on a printed wiring board. 23. A first integrated circuit, which is different in package size and number of terminals but has the same terminal interval, and has at least two types, and has a large package shape and a large number of terminals. In a second integrated circuit having a smaller package shape and a smaller number of terminals than the first integrated circuit, the first integrated circuit and the second integrated circuit are
A method for mounting an integrated circuit, comprising: mounting terminals having the same corner and having the same function order arranged on two sides at the same position on a printed wiring board.