JPS5851325A - Complementary semiconductor integrated circuit device - Google Patents

Abstract

PURPOSE:To improve the package efficiency and to reduce power consumption by adding circuits which freely selectively switch the supply of clock signals to plural functional packaged on one semiconductor integrated circuit device. CONSTITUTION:Circuit blocks 4-6 are divided by functions are each have a clock input terminal CLK, and gate circuits 21-23 supply clocks to their clock input terminals selectively. Then, control circuits 17-20 receive an external signal and control the selective clock supplying operation of the gate circuits 21-23. For example, write information is supplied to registers 18-20 for clock supply information storage through input terminals 11-13, and write pulses at that time are generated by decoding the combination of the terminals 14-16 through a decoder 17 and then supplied as strobe pulses to the registers 18-20 to store the clock supply information. Then, no clock is supplied to the unused blocks 5 and 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a plurality of v
IiIIF! The complementary semiconductor integrated circuit 1itff with block tVt is exciting.

In the conventional Chibaru system circuit #S device, a 14IA conductor integrated circuit 1lI8i which does not use % like MO8 (metal-oxide-semiconductor) memory! There was a method to reduce power consumption and noise by setting the entire device to a feature mode. However, %l! for multiple functional blocks! When using one semiconductor integrated circuit w1, the used %A block and the used 1%, 4m
A block occurs. like this! I, which is not used in the past,
The current was flowing, but the number of fjI syndrome blocks was small, and the magnitude of the current was small compared to the entire 1gl path Wt side of the cow conductor collection. However, with the progress of integrated circuit technology, the degree of integration of a single semiconductor integrated circuit device has improved, and a large number of large-scale mI@blocks can be installed in the same semiconductor integrated circuit device. As the number of radio waves increases, the radio wave consumption increases.
Do not use 11! When the wear pack is added, it becomes very large.
This is inconvenient for a power consumption meeting.

Figure 1 shows an example of a conventional 0M08 (complementary type) conductor cross-conductor circuit device.

In the figure, l is a 0M0B cow conductor integrated circuit.

2 is the electric terminal, 3 is the clock signal input terminal, 4゜5.8
Each! II. The connected circuit block, 7 and 1°9 represent the blade terminals, and 10 represents the external circuit, respectively.

In the tX1 diagram, 'fIIIF! The output terminals of blocks 4, 5, and 6 are connected to the output terminals 7, 8, and 9Km, respectively, and the output terminals 7, 9, and 9 are connected to the external circuit 10, and the external circuits are not connected to the terminals 8 and 9, respectively. do not have. When the p clock signal is input from the 1 clock signal input terminal 3 here,
The WI function block 45.6 performs a switching operation in accordance with the clock signal, and the power consumption fIt of the QMOjlp quadruple element is protected for the first time. til, in figure 1, Deba terminal 7fe
In addition, the external circuit is WMed, and only function block 4 has a useful operation, whereas function block 5.6
Even though it is not used, it is supplied with a clock signal and performs switching operations, consuming power.

Therefore, one way to reduce the power consumption of semiconductor integrated circuit devices is to provide a power supply section for each function block.
One possible method is to switch the power supply outside the semiconductor device, but does this increase the number of human outputs of the semiconductor integrated circuit device and the connections around the input/output devices? This causes problems in terms of implementation efficiency.

Another possibility is to completely control the power supply to each block in the semiconductor integrated circuit, but this method poses a problem with the output impedance of the till gate that controls the power supply sound, and the power is not supplied to each superior block. If the consumption [, fi] increases, the inconvenience of a non-negligible drop in iron pressure occurs.

Alternatively, place 4! I apologize for the block.When it comes to preparing the VC-concentrated conductor concentrator circuit device,
If the number of varieties increases and you want to include @2 in the *aO function block, it will become worse whether it is real or cut leather.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of the prior art described above and to provide a conductor integrated circuit device with high mounting efficiency and low power consumption.

The present invention is based on a semiconductor integrated circuit device constructed from an element, such as a 0M0a conductor element, which has a b5 characteristic when current consumption flows only during switching. In the above semiconductor circuit, when a clock is supplied to the clock input terminal of the clock input terminal *n block, a switching object occurs and a consumed radio wave flows. Conversely, if a clock is not supplied to the same block, switching operations will not occur, so almost no radio waves will be consumed.

The present invention makes use of these 41 characteristics to create clock manual SO
Since clock supply to Pukukku is available, it is not used *a
The radio wave consumption t of the pro-tsuri is almost zero, and the amount of power consumed by one cow conductor integrated horizontal circuit as a whole [! J! It is intended to manifest itself.

As a specific method of carrying out the above-mentioned invention, the clock supply to the Kurotsuta human-powered II conversion block is selectively switched to operate the 70*a block.

All you have to do is create a kill circuit that allows you to stop and move freely by -44.

Furthermore, if there is one input that is free in time and can be used in a time-sharing manner, in order to increase the power at the signal terminal,
It is sufficient to provide a dedicated register so that the clock supply designation information [memory δ is stored in the dedicated register].

Hereinafter, Jin's invention' will be explained in detail along with examples.

Fig. 2 is a block diagram showing a 1'44 embodiment of the present invention.
2 is the power supply terminal, 3 is the external clock input terminal.

4.5.6 is the circuit block shouldering each function, 1°8.9
is an output terminal, 10 is an external circuit, 11, 12.

13 is a clock supply information input terminal, 14.15° 16 is a strobe input tube, and 17 is a tecoder.

1g, 11.20 is the Cronk supply information period customary register,
21, 22, and 21 respectively show the gate circuit t.

In the case of a chCO that receives the clock +8 J4it input (as one of 11-31 and outputs the logic operation axis value to the deblade terminal 7), the block 4 whose name is faked by @1' is the fII record. The 0M0B conductor element that makes up the block 4 performs 7 switching operations and consumes all the power.However,
#I2 As shown in Figure I2, a gate circuit 21r is connected between the external clock input terminal 3 and the II function block 40, so that whether or not a clock signal is supplied to the functional block can be controlled. This gives us 1! Switch the IN1 block to operate or stop +vI! You can freely select and specify depending on the information. This switching information is stored in register 1 for storing tarokk supply information.
It is supplied from the output OUT of 8. The output of 1B is '
1', the clock signal from the external clock input terminal 3 is applied, while when 'θ', the power supply voltage of the power supply terminal 2 is applied to the internal clock input terminal 0LKK of the 818 block 4 through the gate circuit 21. A similar circuit is provided for the functional blocks 5 and 6 in FIG. Clock supply information storage registers 18, 19.20i so as not to supply to 5.6.
Once set, the power consumption of the entire conductor integrated circuit device can be reduced.

Write information to the tarok supply information storage registers 18, 19, 20 is provided through input terminals 11, 12, 13. In addition, the write pulse at the time of Y is the layer 14,
15.18 combinations [Created by decoding with decoder 17, 1g, 19.

20 as a strobe pulse (write pulse). With this] register 18.19°20KFi,
Clock supply information is written and stored. in this case,
Terminals 14, 15, and 18tj have other purposes, and are used in common.The terminals are used in common, and are equipped with an internal decoder to decode and create daily pulses. Therefore, when the input pulse is generated, the input terminals 11 and 12
．． It is only necessary to apply the clock supply information to 13 hectares, and when a write pulse is not generated, the lines 11, 12, and 13 can be used for other purposes. In addition, the clock supply specification information is set as the initial setting, and when you start using the conductor collection circuit @tk, Ll
You only need to set it once. In this way, by using the logical combination 1+-ORI which is meaningless for normal operation and which cannot occur in normal operation state (1), an external terminal for a gate switching signal is substantially unnecessary.

As explained above using the embodiments of the present invention, 1mo
! 1 of several vIs installed in the conductor concentrator circuit device! By freely changing the supply of clock signals to dry blocks and adding all switching circuits, it is possible to realize a multifunctional semiconductor integrated circuit device that can reduce the power consumption of unused function blocks. The newly added circuit is small compared to the whole, and does not increase the chip area Kf#, and does not impair the fermentability. First, by sharing the input terminals as described above, the above functions can be provided without increasing the number of terminals.

In addition, since the semiconductor integrated circuit device of the present invention only needs to be initialized once in '#i' when it starts to harden, one microcomputer can be used for the
If @, the initial setting is easier, and the effect of 7 is more pronounced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the conventional technology, and FIG.
FIG. 1 is a block diagram showing an embodiment of the present invention. 1.1'...CMO8 semiconductor integrated circuit device, 2...
Power supply terminal, 3...External clock input terminal, 4.5.6
...Function block? , 8.9...output terminal, 10
... External circuit, 11.12.13 ... Clock supply information input terminal, 14.15.16 ... Strobe input terminal, 17 ... Decoder, 18.19.20 ... Register, 21. 22.23...Gate circuit. Agent Patent Attorney Susuki 1) Toshiyuki

Claims (1)

[Claims] 1. A circuit block having a clock divided for each function, a gate circuit that supplies a clock to the clock, and a gate circuit that receives a signal from the outside.
The above gate circuit:! ! It is equipped with a control circuit for controlling the sound of the lock supply operation and a complementary semiconductor assembly circuit similar to 41P. 2. The means for supplying the control circuit to the control circuit under normal operating condition 1l.
Complementary conductor collection St circuit am according to claim 1, which is formed using external terminals of a unique logical combination in ll. 3. The control circuit is composed of a register and a decoder circuit that receives the hold signal of 7, and supplies the clock i! One circuit gate control! 1 [-1'tk.