JPS58166594A - Writing device of programmable rom - Google Patents

Abstract

PURPOSE:To shorten the writing time with a simple operation, by preparing plural sockets for package of programmable ROMs containing data lines and control lines respectively in response to the word length of the writing data and then writing all at once the data of a word length into plural ROMs. CONSTITUTION:For instance, the data of word length up to double as much as the bit length per address of a programmable ROM1 is written. In this case, the ROMs are packaged into two sockets 26A and 26B respectively, and the same address is delivered to these two sockets through an address line 23. Then writing control signals 25A, 25B and 25C are delivered while the writing data are delivered all at once to data lines 24A and 24B. Then the writing voltage is delivered simultaneously to both sockets. Thus the writing time is reduced down to half and then a cost reduction is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improved program ROM IF k-embedding device.

A conventional device of this type is shown in FIG. In the figure, (1) is a programmable ROM write and read control device, (2) is a write voltage generation circuit,
(3) is an address line for indicating the address of the programmable ROM, (4) is a data line for inputting and outputting write and read data, and (5) is a programmable RO
A control line for inputting and outputting signals specifying the operation of M, (
6) is a socket for mounting a programmable ROM.

Next, the operation will be explained. When using a device with such a configuration, a programmable ROM mounting socket (6
) is mounted with a programmable ROM to be written to, and the programmable ROM IF k loading and reading control device (1) is specified with the address and data of the write contents and the type of programmable ROM to be written. Based on the programmable ROM standard, the address contents are input to the address line (3), the write data contents are input to the data line (4), and the write control signal is input to the control line (6).

The write voltage generation circuit (2) generates a write voltage value that differs depending on the type of programmable ROM to be written according to the contents of the control line (5), and
Output to.

Conventional programmable ROM writing devices are configured as described above, so if the word length of data to be written or read exceeds the data width corresponding to one address of one ROM, it is necessary to write or read data several times. Writing or reading must be performed separately, which has disadvantages such as complicated operations and a longer writing time in proportion to the number of data to be processed.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and it is possible to install programmable ROM mounting sockets each having a data line and a control line in a number corresponding to the word length of the data to be written. The purpose of the present invention is to provide a device that can simplify the operation and shorten the writing time to a few minutes compared to the conventional method by writing word length data to multiple ROMs at once. There is.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, (2) is a programmable ROM write and read control device, and the target programmable ROM
Based on the M standard, address contents, data contents, and various control signals are input to the output statement C.

(26A) and (26B) are sockets for mounting programmable ROMs to be written or read, respectively. 2) is an address line that outputs an address signal output from the control device to the sockets (26A) and (26B). (24A) and (24B)
is from the control device □, the socket (26A)
This is one data line for inputting data signals corresponding to the output signals and (26B) to the sockets (26A) and (26B), respectively. (25
A) and (25B-) transmit control signals outputted from the control device e◇ corresponding to the sockets (26A) and (26B) to the sockets (26A) and (26B), respectively.
This is a control line for outputting to B).

(25C) from the control device) to the write voltage generation circuit (2) and the socket (26A) and (
A common signal among the control signals outputted to
6A) and (26B).

(2) is a write voltage generation circuit for the programmable ROM, which generates various voltage values corresponding to various types of the programmable ROM according to the data on the control lines (25AX25B) and (25C), and generates various voltage values corresponding to various types of the programmable ROM, 26B).

In a programmable ROM writing device with such a configuration, when writing data with a word length up to twice the bit length per programmable ROM address,
Two sockets (26A) and (26B) are each equipped with a program ROM, and the same address is attached to the address line)
outputs to two sockets (26A) and (26B), and connects pig wires (24A) and (26B) corresponding to each socket.
24B), the data for fiJ writing is output all at once, and then the write control signal (25A) is output.

By outputting (26B) and (25C), the write voltage is output to each socket simultaneously. By repeating this process, data with a word length up to twice that of the ROM can be written to two ROMs at the same time, making operations such as specifying data to be written easier. It becomes possible to cut the time in half compared to the conventional method.

In the above embodiment, the socket has two sockets, which is effective when writing up to twice the word length of the ROM, but by increasing this number, the same effect can be achieved when writing a longer word length. effect can be obtained.

Furthermore, if a microcomputer device is used for the above-mentioned control device, the writing area of each socket can be programmed in advance not only when writing a long word length, but also when writing a continuous large amount of data. A similar effect can be obtained by calculating with a computer and performing simultaneous writing.

According to this invention, different data can be written to multiple programmable ROMs at the same time, and most of the circuits can be used for a single programmable ROM Ik, resulting in low cost and easy operation. A programmable ROM writing device that can shorten processing time can be realized.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a conventional programmable ROM writing device, and FIG. 2 is a block diagram showing the configuration of a programmable ROM writing device according to an embodiment of the present invention. υ...Writing and reading control device, (2)...
・Writing. Input voltage generation circuit, (to) Address line, (24A
)...Data line for socket (26A), (24B)
...Data line for socket (26B), (25A)...
Programmable ROM control line for socket (26A), (
25B)...Programmable R for socket (26B)
OM control line, (25C)...Programmable ROM common control line, (26A) (2'6B)...Socket representative for programmable ROM implementation Makoto Kazuno - Commissioner of the Japan Patent Office 1 Case display Mochiko Sho 61- 49691 No. 2,
Name of the invention Programmable ROM writing device 3, To the representative who makes the amendment + I + Jin 8 part, Column 6 of the scope of patent claims to be amended, Contents of the amendment (1) Column 41dll of patent claims in the specification attached as an attachment Correct as follows. 7. List of attached documents (1) At least one copy per page stating the amended scope of claims.Claims consist of main circuit, address control, data line, write and read control edge, and programmable ROM mounting socket. A programmable ROM writing device has a plurality of 61(7) sockets for mounting a programmable ROM, and has a data line and a control line arranged to correspond to the sockets, and has a plurality of programmable ROs.
A programmable ROM 4 writing device characterized in that different data can be written to M at the same time.

Claims (1)

[Claims] Write and read control device A programmable ROM I tk storage device consisting of a write voltage generation circuit, an address line, a data line, a write and read control line, and a socket for mounting a programmable ROM, having a plurality of sockets for mounting a programmable ROM,
A programmable ROM writing device comprising a data line and a control line provided to correspond to the socket, so that different data can be written into a plurality of programmable ROMs at the same time.