JP2001052491A - Data writing device and connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work efficiency by facilitating removing work of a target board in a data writing process to a ROM on the target board and to provide a data writing device and a connector having a service life longer compared with a conventional one. SOLUTION: A converting board 2 is attached to plural ROM sockets provided in a ROM writer, and a PCB 10 is attached to the connecting connector 21 provided in the converting board. And data are written into a flash ROM 12 on the PCB by the ROM writer via the converting board. The converting board is provided with plural attaching connector 22 attached to each ROM socket, since respective attaching connectors are mutually connected by a board substrate 20, the converting board is not disengaged from the ROM writer when the PCB is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electrically rewritable ROM (Read Only M) mounted on a target board such as a facsimile control board.
The present invention relates to a data writing device for writing write data to the target board and a connection tool for connecting the target board and the data writing device.

[0002]

2. Description of the Related Art As electrically rewritable ROMs, EPROMs capable of erasing written data by ultraviolet rays or the like and rewriting data can be used.
(Erasable Programmable RO
M) or a batch erase flash EEPROM (Ele
tric Erasable Programmab
le ROM; hereinafter, simply referred to as "flash ROM". ) Are known. In order to reduce the size of products, flat package flash ROMs for surface mounting (hereinafter, referred to as “flat package ROMs”) and the like are often used.

Conventionally, when data is written in such a ROM, the ROM is stored in a state separate from the printed circuit board on which the ROM is mounted, that is, in a state of a single ROM.
It was mounted on an M writer to write data. After the writing operation is completed, the ROM in which the data is written is mounted on the printed circuit board by soldering. However, in such a writing method, the ROM
When the lead is removed from the ROM writer, the lead is bent, and defects such as defective soldering are likely to occur.

In order to solve such a problem, Japanese Patent Application Laid-Open No. 9-274798 discloses a method in which an electrically rewritable ROM is mounted on a printed circuit board, and a program is stored in the ROM via a conversion board as a connector. A writing method for writing data has been proposed. According to this method,
Since the program data is written to the ROM after the ROM is mounted on the printed circuit board, there is no work of removing the ROM from the ROM writer unlike the related art, and the lead does not bend. According to this method, the printed circuit board is mounted on the connector of the flash ROM interface provided on the conversion board, and the ROM writer connector, which is the mounting connector of the ROM writer interface of the conversion board, is mounted on the ROM socket. . Therefore, data can be written to the ROM on the printed circuit board using a general-purpose ROM writer.

[0005]

However, one RO
When one conversion board is mounted on the M socket and data is written into the ROM on the target board such as a printed board, the holding force of the printed board by the connector of the conversion board is increased by the ROM socket. When the printed circuit board is detached from the conversion board when the holding force is larger than the holding force, the conversion board may rise from the ROM socket or may be detached in the worst case.

As described above, when the printed circuit board is lifted from the ROM socket many times when the printed circuit board is removed from the converted board, the work of re-attaching the raised converted board to the ROM socket is repeated many times. There is a need. Therefore, the production process of a printed circuit board having a ROM in which data is written,
There is a problem that the work of removing the printed circuit board in the data rewriting process of rewriting the OM data becomes complicated, and the work efficiency of the entire process is reduced. In particular, when such a printed circuit board is mass-produced in a factory or the like, the production efficiency may be significantly reduced.

[0007] Further, as described above, when the work of re-attaching the conversion board to the ROM socket is repeated many times, the RO socket and the RO of the conversion board to be mounted in the ROM socket are re-installed.
This may cause breakage of the M writer connector or poor contact. As a result, there is a problem that the life of the ROM socket of the ROM writer and the life of the conversion board are shortened.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to facilitate removal of a target board in a process of writing data to a ROM on the target board, thereby improving work efficiency. And a connection tool for connecting the data writer to the data writer which has a longer service life than the conventional one and reduces the cause of failure of a portion where the connection tool and the data writer are mounted. It is to provide.

[0009]

According to a first aspect of the present invention, a plurality of data output units for outputting write data to an electrically rewritable ROM mounted on a target board are provided. A data writing device main body for writing data to the ROM via the ROM, and a connector for connecting a data writing connector provided on the target board to the data output unit for externally controlling the ROM. In the data writing device, the connection tool includes a plurality of mounting connectors mountable on the data output unit, and a connecting member for connecting at least two or more of the plurality of mounting connectors. Things.

[0010] In this data writing device, a plurality of mounting connectors provided on the connecting device are connected to each other, and therefore, compared to the conventional connecting device held in the main body of the data writing device by one mounting connector. Its holding power can be increased. For example, in the case of using a connector having four mounted connectors connected to each other, the data output unit of the data writing device main body can hold the connector at four points. When removing the connector, it is possible to prevent the connector from being lifted up or detached from the data output section. In particular, when a large number of data output sections are provided in the main body of the data writing device, if all of them are connected using a connector having a mounting connector corresponding to the number, the target board can be connected to the target board. It is possible to sufficiently prevent the connector from being lifted from the data output section when removing the connector.

In particular, the invention according to claim 2 provides a plurality of data output units provided in a data writing device for writing write data to an electrically rewritable ROM mounted on a target board, A connector for connecting to a data writing connector provided on the target board for controlling from a plurality of mounting connectors that can be mounted on the data output unit; and at least two or more of the plurality of mounting connectors. And a connection member for connection.

In this connecting device, a plurality of mounting connectors mounted on the data output section of the data writing device are connected to each other, so that the conventional connection held by the data writing device by one mounting connector. The holding power can be increased more than the tool. For example, when a connector having four connected connectors in a connected state is used, the data output unit is held at four points, and the connection tool is prevented from floating or detaching from the data output unit. Can be prevented. In particular, when a data writing device is provided with a large number of data output units, if all of the mounting connectors corresponding to the number are connected and provided, when the target board is removed from the connection tool, Can be sufficiently prevented from floating from the data output unit.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to a data writing method for writing data in a flash ROM as an electrically rewritable ROM mounted on a printed circuit board (hereinafter, referred to as “PCB”) as a target board. An embodiment applied to an embedding device will be described.

First, the configuration of the entire data writing device according to the present embodiment will be described. FIG. 1 is a block diagram illustrating a schematic configuration of the data writing device according to the present embodiment. FIG. 2 is a perspective view showing the data writing device with the PCB attached. The data writing device 1 includes a ROM socket 3 serving as a data output unit including a ROM socket.
ROM writer 3 having a plurality of
Conversion board 2 which is a connector for connecting to M socket
It is composed of The conversion board 2 is configured to be detachable from a ROM writer 3 which is a main body of the data writing device. In the data writing device 1, program data as write data output from the ROM writer 3 is transferred to the PCB 10 via the conversion board 2 attached to the ROM socket 31.
Is written to the flash ROM 12 already mounted in the flash ROM 12.

FIG. 3 is a block diagram showing a schematic configuration of the PCB 10. As shown in FIG. The PCB 10 includes a CPU 11 functioning as a bus master and one flash ROM 12
Externally controlling the flash ROM and the like,
A data write connector 13 for writing data to the flash ROM. On this PCB 10,
A power supply line for operating the CPU 11, the flash ROM 12, etc., an address bus for transmitting address data, a data bus for transmitting write data and read data, and control signals such as read signals and write signals are transmitted. A plurality of control signal lines and the flash R
A chip enable signal line for transmitting a chip enable signal for enabling the flash ROM when writing data to the OM 12 and a sleep signal for stopping a function of the CPU and putting the CPU into a sleep state. The sleep signal line is printed and wired. In FIG. 3, a plurality of control signal lines are represented by one line.

In a normal operation in which the PCB 10 is mounted on a facsimile and operates, the flash ROM 12 is controlled by the CPU 11. However, when the program data is written in the flash ROM 12 at the time of manufacturing the PCB 10 or rewriting the program data written on the PCB, the conversion board 2 is connected via the data writing connector 13. The CPU 11 is put into a sleep state by a sleep signal input from the
In a state where it can be controlled from the outside.

Next, the configuration of the conversion board, which is a feature of the present invention, will be described. FIG. 4 is a side view showing a part of the conversion board 2 according to the present embodiment. This conversion board 2 includes a socket row in which eight ROM sockets 31 are arranged.
It is attached to the ROM writer 3 having the rows. On the lower surface of the conversion board 2, an R as an attachment connector to be attached to the ROM socket 3 corresponding to the socket row is provided.
Eight OM writer connectors 22 are provided. Also,
This conversion board 2 is provided with eight connection connectors 21 to which the data write connector 13 of the PCB 10 can be attached and detached.
The CB 10 can be attached. In the case of the present embodiment, two conversion boards 2 can be mounted on the ROM writer 3. Therefore, the data writing device 1 of the present embodiment has a maximum of 16 PCBs 1.
Data can be written to the flash ROM 12 on the 0. FIG. 2 shows the data writing device 1 in a state where the conversion board 2 is attached only to the socket row located on the back side in the figure.

Each connector 21 is connected to a ROM of the ROM writer 3 via a ROM writer connector 22.
Connected to socket 31. The connection connector 21 of the present embodiment is connected to the ROM socket 31 on a one-to-one basis, and is provided on the upper surface of the board substrate 20. Also,
The ROM writer connector 22 is connected to the board board 20.
Is provided on the lower surface. As described above, the eight ROM writer connectors 22 are connected to each other by the board substrate 20 functioning as a connecting member. When these ROM writer connectors 22 are attached to the ROM socket 31, the RO target to be written to the ROM socket is conventionally used.
The ROM writer connector is connected to the R by operating the fixing lever indicated by reference numeral 39 in FIG.
Secure to OM socket. As a result, the conversion board 2 can be held on the ROM writer 3 placed above.

FIG. 5 is a block diagram showing a schematic configuration of a portion of the conversion board 2 for connecting one ROM socket 31 and one PCB 10. The conversion board 2 includes a power supply that supplies power to the PCB in accordance with the power supply voltage from the ROM writer 3 supplied via the ROM writer connector, in addition to the connection connector 21 and the ROM writer connector 22 described above. A voltage tracking supply unit 23 and a buffer unit 24 for reducing the drive load of the ROM writer 3 when inputting a signal to the PCB are provided. In the present embodiment, the sleep signal is set at the GND level.

As shown in FIG. 5, the buffer section 24 stores various data output from the ROM writer 3 into R data.
It is provided in the middle of an address bus, a data bus, a control signal line, and a chip enable signal line for transmission from the OM writer connector 22 to the connection connector 21. The buffer unit 24 includes a unidirectional bus buffer provided in the middle of the address bus, control signal line and chip enable signal line, and a bidirectional bus buffer provided in the middle of the data bus. The power supply of the buffer unit 24 is also changed to the power supply voltage following supply unit 23.
Supplied by

Next, the configuration of the ROM writer 3 constituting the data writing device 1 of the present embodiment will be described. FIG.
3 is a block diagram showing a schematic configuration of a part of the ROM writer 3. FIG. This ROM writer 3 is used for the conversion board 2
A ROM socket 31 connected to the ROM writer connector 22 of the first embodiment, an input interface unit 32 as an instruction input unit operated by an operator to input a predetermined instruction, and the ROM writer based on an instruction signal from the input interface unit. Control unit 33 as a control means for controlling each unit of 3
And a memory 34 as storage means for storing program data which is write data to be written into the flash ROM 12 of the PCB 10, and a chip enable signal for making the flash ROM on the PCB 10 writable. A chip enable signal generation circuit (35a, 35b, 35c) as a signal output means for outputting;
The data output circuit 36 for temporarily storing the write data output from the control unit and writing the write data to the flash ROM, and temporarily storing the address data output from the control unit, It comprises an address data output circuit 37 for giving an address to the flash ROM, and an end lamp 38 as end notification means for notifying a worker of the end of the writing operation. Also, this RO
The M writer 3 is provided with an NG lamp (not shown) as error notifying means for notifying an operator of an error in the data writing step and the writing check step.

The control unit 33 comprises a CPU, a PROM storing an execution program for performing a write operation, and the like, and controls each unit of the ROM writer 3 based on an instruction signal from the input interface unit 32. I do. The memory 34 stores program data to be written in the flash ROM 12.

Each of the chip enable signal generation circuits (3
5a, 35b, 35c) are used to set the flash ROM 12 on the PCB 10 corresponding to each of the ROM sockets (31a, 31b, 31c) to a write operation state based on the instruction signal given from the control unit 33. This is a circuit for providing a chip enable signal composed of necessary electric pulses to the flash ROM. This chip enable signal is the same as the chip select signal for enabling the flash ROM 12 output from the CPU 11 provided on the PCB 10.

Next, the writing operation of the data writing device 1 will be described. Hereinafter, in order to simplify the description,
A case where one PCB 10 is attached to the connector 21 corresponding to the ROM socket 31a and data is written to the flash ROM 12 on the PCB will be described.

First, when starting the writing operation, each ROM writer connector 22 of the conversion board 2 is mounted on the corresponding ROM socket 31 of the ROM writer 3 and the conversion board is mounted on the ROM writer. The data write connector 13 of the PCB 10 on which the flash ROM 12 is mounted by soldering
Is attached to the connector 21 of the conversion board 2,
Attach the PCB to the conversion board. At this time, the sleep signal line of the ROM control I / F is G
It is dropped to the ND level (Low level) and the PCB1
The CPU 11 of 0 is in a sleep state. As a result, the flash ROM 12 of the PCB 10 is electrically disconnected from the CPU 11, so that the flash ROM can be controlled by the ROM writer 3.

FIG. 7 is a flowchart showing the operation of the ROM writer 3. First, when a worker gives an instruction to start writing from the input interface unit 32 of the ROM writer 3, the writing operation is started, and it is checked whether or not the flash ROM 12 to be written exists (S1). Here, when it is determined that the flash ROM 12 is present, the operation signal generating circuit 35a outputs a chip enable signal to the flash ROM. With this chip enable signal, the flash ROM 12 is lowered to a low level, and becomes in a state where data can be written. Then, a write signal, which is a control signal, is enabled, and the mode shifts to the write mode (S2). On the other hand, when it is determined that the flash ROM does not exist, the writing operation ends.

When the mode is shifted to the write mode, the control section 33 reads out write data for address 0 as a start address from the memory 34, outputs the write data to the data output circuit 36, and outputs the data to the address output circuit 37. The address data 0 is output, and at the same time, a timer in which a predetermined write operation time is set is reset (S3). When the write operation is started, the write data output from the data output circuit 36 is transferred from the ROM socket 31a to the PCB 1 via the conversion board 2.
0 is written to the flash ROM 12 above. The write data for address 1 is written next, but the same procedure is performed thereafter.

While the write operation is being performed in this manner, the timer determines whether or not a predetermined write operation time has elapsed (S4). Then, after the elapse of the writing operation time, the mode shifts to the writing check mode,
Enable the read signal as the control signal (S
5) Read the data written in the flash ROM 12 (S6). Then, based on the read data from the flash ROM, it is checked whether data is written in the flash ROM (S7).

If it is determined in step S7 that data has not been written, the process returns to step S2. on the other hand,
If it is determined that the data has been written, the read data and the write data are compared to check whether the data has been correctly written to the flash ROM 12 (S8). If it is determined that the data has not been correctly written, the NG lamp is turned on (S9), and the writing operation ends. On the other hand, when it is determined that the data is correctly written, the end lamp 38 is turned on (S10), and the writing operation is ended.

As described above, according to the present embodiment, the above-described P is written using the existing ROM writer 3 having the ROM socket 31.
It is possible to write program data to the flash ROM 12 mounted on the CB 10. According to the present embodiment, since the eight ROM writer connectors 22 provided on the conversion board 2 are connected to each other, the conversion board 2 is held at eight locations by the ROM socket 31 of the ROM writer 3. can do. That is, the conversion board 2 according to the present embodiment is held with eight times the holding force as compared with a conventional conversion board having one connection connector and one ROM writer connector. Thus, when the PCB 10 is detached from the conversion board 2, the conversion board is hardly detached from the ROM socket 31. Therefore, the work of removing the PCB 10 in the data writing process becomes easy, and the work efficiency can be improved. Further, the life of the ROM socket 31 and the ROM writer connector 22 mounted on the ROM socket can be extended.

Although the present embodiment has been described with respect to a configuration in which all eight ROM writer connectors are connected in correspondence with a row of ROM sockets provided in the ROM writer, the connection between the PCB and the connection connector is described. Depending on the mounting method and mounting structure, a configuration in which a smaller number of ROM writer connectors are connected may be employed. For example, two conversion boards in which four ROM writer connectors are connected may be prepared, and these conversion boards may be mounted along the ROM writer socket row. Further, in the present embodiment, the mode in which one conversion board is mounted on the socket row of the ROM writer has been described.
It is also possible to attach one conversion board to two socket rows provided in the M writer.

In this embodiment, a PCB having one ROM is described.
Similar effects can be obtained for a PCB on which an OM is mounted. Furthermore, in the present embodiment, the conversion board provided with a connection connector that has a one-to-one correspondence with the ROM socket of the ROM writer has been described. However, depending on the specific configuration of the present invention, the conversion board is not necessarily connected to the ROM socket. Need not correspond one-to-one.

In this embodiment, a case has been described in which data is written to a flash ROM which is a collectively erasable electrically rewritable ROM. The invention can be applied not only to the erasing type but also to a normal EEPROM. In addition, the present invention is not limited to a PCB applied to a facsimile control boat, but an electrically rewritable RO.
The present invention can be applied as long as it is equipped with M.

[0034]

According to the first aspect of the present invention, when the target board is detached from the connection tool, the connection tool is hardly lifted from the data output portion and hardly detached from the data output portion. There is an excellent effect that the efficiency can be increased. Further, there is an excellent effect that it is possible to provide a data writer having a longer service life than the conventional one by reducing the causes of failure of the portion where the connection tool and the data writer are mounted.

In particular, according to the second aspect of the present invention, when the target board is detached from the connector, the connector is less likely to float from the data output portion and is less likely to come off. There is an excellent effect that work efficiency can be improved. Further, it is possible to provide a connector that can reduce the cause of failure of a portion where the connection tool and the data writing device are mounted, extend the life of the data writing device as compared with the related art, and have a longer life. There is an excellent effect that can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a data writing device according to an embodiment.

FIG. 2 is an exemplary perspective view showing the data writing device with a PCB attached;

FIG. 3 is a block diagram showing a schematic configuration of the PCB.

FIG. 4 is a side view showing a part of the conversion board of the data writing device.

FIG. 5 is a block diagram showing a schematic configuration of a part of a conversion board of the data writing device.

FIG. 6 is a block diagram showing a schematic configuration of a part of a ROM writer of the data writing device.

FIG. 7 is a flowchart showing the operation of the ROM writer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Data writing device 2 Conversion board 3 ROM writer 10 PCB 11 CPU 12 Flash ROM 13 Data writing connector 21 Connector 22 ROM writer connector 24 Buffer unit 31 ROM socket 33 Control unit 34 Memory

Claims (2)

[Claims] 1. A data writing device main body for writing write data to an electrically rewritable ROM mounted on a target board through a plurality of data output units for outputting the write data to the ROM, A data writing device having a connector for connecting a data writing connector provided on the target board to the data output unit for external control, wherein the connection device can be attached to the data output unit. A data writing device comprising: a plurality of mounting connectors; and a connecting member for connecting at least two or more of the mounting connectors. A plurality of data output units provided in a data writing device for writing write data into an electrically rewritable ROM mounted on a target board; and a target output unit for externally controlling the ROM. A connector for connecting a data writing connector provided on a board, comprising: a plurality of mounting connectors mountable on the data output unit; and a connecting member connecting at least two or more of the plurality of mounting connectors. A connection tool characterized in that: