KR930005379B1 - Prom writing device of series interface type - Google Patents

Abstract

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Description

Serial interface PROM writing device

Fig. 1 is a block diagram showing the schematic configuration and conversion means of the entire writing system of a serial interface PROM according to the present invention in a functional block.

FIG. 2 is a block diagram functionally blocking the writing apparatus 1 of FIG.

FIG. 3 is a block diagram functionally blocking the serial read write PROM 3 of FIG.

FIG. 4 is a timing chart showing signals input to the serial lead-type PROM (3) of FIG.

5 is a block diagram showing a functional block diagram of a conventional serial lead-type PROM.

Fig. 6 is a block diagram showing a conventional writing device as a function block.

7 is a timing chart showing a signal input to a serial read write PROM by one conventional method.

8 is a timing chart showing a signal input to a serial read write PROM by another conventional method.

* Explanation of symbols for main parts of the drawings

1: writing device 2: serial conversion means

3: serial read-write type PROM 11: data storage means

12: data address setting means 13: write pulse control means

14: parallel output means 15: temporary storage means

16: reference clock means 17: comparison means

21: Parallel serial conversion means for the address data signal

22: parallel / serial / parallel conversion means for control data signals

23: signal selection means 24: transmission means

25: reading means 31: selecting means

32: serial and parallel conversion means for the address data signal

33: serial / parallel / parallel conversion means for control data signal

34: data holding means 35: writing means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing apparatus (hereinafter referred to as "PROM") for writing control data into a PROM (Programmable Read Only Memory) constituted of a data storage apparatus of a microcomputer for controlling the operation of the apparatus.

Background Art A PROM writer known in the art outputs address data and control data paired with this address data in parallel, and writes the control data thus output to the parallel read-write PROM.

The conventional PROM writer has been developed in response to writing in a parallel read / write PROM (parallel read / write PROM).

However, the above parallel lead-type PROM requires many ports when writing data. That is, 24 to 40 ports were required.

Therefore, since the parallel lead-type PROM required a large cost at the time of manufacture, it became expensive.

When the PROM is connected to a microcomputer and used, the input / output port of the microcomputer is used corresponding to the number of ports of the PROM as an interface port with the PROM. Therefore, in the microcomputer, the number of ports required for device control is limited, and since the complicated control by the microcomputer could not be performed, the microcomputer could not be effectively used.

In view of the above problems, recently, serial lead-type PROMs (serial read / write PROMs) have been developed ("Fujitsu Semiconductor Devices and Data Book" 86 MEMORY "in April, 1984, Fujitsu Corporation). ).

In general, as shown in FIG. 5, a schematic structure of a serial read write type PROM includes an address counter 51 for setting an address in synchronization with a clock signal, and a signal in synchronism with the signal of the address counter 51. The data storage means 52 having a 1-bit xn configuration for reading and inputting control data and the control data read and input to the data storage means 52 to be written to the data storage means 52 in synchronization with the write pulse signal. It consists of the writing means 53 which instruct | indicates.

Since the serial lead-type PROM outputs data necessary for writing in serial, the number of ports of the serial lead-type PROM is, for example, about 6 to 8 is sufficient. That is, one input port for writing data, one output port for reading data, one clock port for synchronizing write timing of data, and data transmitted serially are used as address data and control data. Six ports such as a switching signal port, one power supply port, and one grounding port for switching are used.

Therefore, when the serial lead-type PROM is connected to a microcomputer, the input / output port of the microcomputer can be effectively used. In other words, since a small number of input / output ports for interfacing between the microcomputer and the PROM are required, the control by the microcomputer can cope with complicated contents.

This is extremely effective in terms of design, because rationalization is achieved in the technique of controlling a device by a microcomputer.

However, since the configuration of the write device of the serial read write type PROM is not specified, it cannot be provided at low cost.

Inferred from the contents described in the Japanese "Fujitsu Semiconductor Device Book" 86MEMORY ", the configuration of FIG. 6 can be considered as the configuration of the writing apparatus.

In Fig. 6, reference numeral 61 denotes data setting means which has a function of data storage means for storing data to be written to the serial lead-type PROM, and controls output of control data to be written, and N-bit (random bit) shift register for reading and inputting control data from the data setting means 61 and outputting the read-in input data, and 63 denotes a control register of the control data in synchronization with the data setting means 61; Write pulse control means for controlling write timing, and 64 is clock generation means for controlling the operation timing.

As the method of writing the control data, the following two methods can be considered.

One of them is a method of sequentially outputting control data in synchronization with a clock from address 0 and writing the control data in PROM in synchronization with a write pulse signal, as shown in FIG.

The other method is a method of outputting control data arbitrarily in synchronism with a clock and writing the control data arbitrarily output in synchronism with a write pulse signal to a serial read write type PROM as shown in FIG.

However, the above structure can be written to the serial lead-type PROM. However, since the shift register 62 is required, the shift register 62 becomes larger when the number of bits of data from the data setting means 61 increases. Should also be greatly expanded. Therefore, there is a problem that a work requiring changing the timing of the peripheral write pulse control means 63 or the like is required.

An object of the present invention is to provide a writing apparatus (write apparatus 1 + parallel-serial conversion means 2) capable of writing data to a serial inter-piece type PROM (serial read-type PROM) 3.

Another object of the present invention is to provide a writing apparatus for reasonably inputting data to a serial interface PROM.

It is still another object of the present invention to provide a writing apparatus having a configuration (parallel and serial converting means 2) that can be easily added to an existing writing apparatus (parallel read-write PROM writing apparatus) 1. .

It is still another object of the present invention to use a writing device that effectively utilizes the output port of a microcomputer by using fewer input ports (interface ports with a microcomputer) of a serial read / write PROM used for writing data. To provide.

Another object of the present invention is to provide a writing apparatus which can increase the number of input / output signals of a microcomputer, and thus performs more complicated control by the microcomputer.

In order to achieve the above object, a serial interface PROM writing apparatus according to the first aspect of the present invention is provided with a parallel address data signal for specifying an address of control data to be written into a serial interface PROM via a parallel conversion means. The write pulse signal is serial interface type so as to output a parallel control data signal composed of a plurality of bits for each address data signal to the parallel serial conversion means, and to write the output data output from the parallel serial conversion means to a serial interface type PROM. A writing device for outputting to a PROM, and parallel-to-serial converting means for converting the address data signal and the control data signal output in parallel from the writing device into a serial signal and outputting the serial data to a serial interface type PROM. It is done.

Further, in the serial interface PROM writing apparatus according to the second aspect of the present invention, in the means of the serial interface PROM writing apparatus according to the first aspect of the present invention, the writing apparatus includes writing pulse control means and data address setting. A reference clock means for generating a reference clock to control the respective output timings of the means and the data storage means, and address data for setting the address data necessary for writing control data from the data address setting means and controlling the output to the data storage means. Outputs the control data selection signal to the data address setting means in response to a write instruction signal, and transmits the control data to the address specified by the address data input to the serial interface type PROM through parallel to serial conversion means. Write pulse signal in response to the write command signal to write to the PROM A write pulse control means for outputting a write pulse signal to the serial interface PROM in response to a write instruction signal to write the data into the serial interface PROM, and set in response to the address data / control data selection signal of the write pulse control means. Data address setting means for outputting the address data signal to be stored to the data storage means, control data to be written to the serial interface type PROM, and address data to designate an address to write the control data to, and to set the data address. And data storage means for outputting the control data in response to the address data signal output from the means.

Further, the serial interface PROM writing apparatus according to the third aspect of the present invention is provided for each of the parallel address data signal and the address data signal in which the address of the control data to be written to the serial interface PROM is written through the parallel serial conversion means. A writing device for outputting a parallel control data signal composed of a plurality of bits to the parallel-to-parallel conversion means, and address data for converting and outputting the address data signal output in parallel from the writing device into a serial address data signal and outputting the serial data; Parallel-to-serial conversion means for signal, parallel-to-serial conversion means for control data signal for converting and outputting the control data signal output in parallel form from the writing apparatus into an address control data signal in serial form, and parallel-to-serial conversion means for address data signal Address data in serial form output from A transmission means for transmitting a signal and a serial control data signal outputted from the parallel data serial conversion means for the control data signal and outputting the serial data to the serial interface PROM in a set of serial forms, and outputted in parallel from the writing apparatus. Parallel and serial conversion means for converting the address data signal and the control data signal into a serial signal and outputting the serial data to a serial interface PROM; and the control data in response to the address data signal of the transmission means of the parallel and serial conversion means. A serial interface type PROM which designates an address of? And writes the control data at the designated address in response to a write pulse signal of the write pulse control means; and output data outputted from the parallel serial conversion means to a serial interface type PROM. The serial interface in response to a write command signal for writing Characterized in that the write device type PROM write pulse consisting of a means for outputting a pulse signal.

In addition, the serial interface PROM writing apparatus according to the fourth aspect of the present invention includes a parallel type address data signal of parallel type in which address data of control data to be written to the serial interface PROM is transmitted to the parallel data conversion means for the address data signal. A writing device for outputting a parallel control data signal comprising a plurality of bits for each address data signal to a parallel / serial / parallel conversion means and a comparison means for a control data signal, and the output device in parallel form from the writing device. Converting the address data signal into a serial address data signal and outputting the parallel data to the transmission means; and converting the control data signal output in parallel from the writing device into a serial control data signal. Output to the transmitting means, and serial through the transmitting means Whenever the control data is written to the interface PROM, the control data to be written at that time is input from the serial interface PROM in a serial form through a reading means, and the control data input in the serial form is parallel to the control data signal. Parallel / serial / parallel conversion means for the control data signal, and outputting the converted control data signal to the comparison means, and the serial address data signal and the control output from the serial-to-parallel conversion means 21 for the address data signal. Transmitting means for transmitting the control data signal outputted from the parallel / serial / parallel conversion means for data signals to the serial interface PROM in a set of serial forms; and the address of the control data by the address data signal of the transmitting means. Is designated by the write pulse signal of the write pulse control means. A serial interface PROM for writing the control data to a address; a write pulse control means for outputting a write pulse signal instructing to write the control data at the designated address; and when the control data is written to the serial interface PROM. Reading means for reading and inputting control data written at that time every time and outputting to the parallel / serial / parallel conversion means for the control data signal, and the control data so as to confirm that the control data is correctly written in the serial interface type PROM. And a comparison means for comparing the parallel control data signal output from the signal parallel to serial / parallel conversion means and the parallel control data signal output from the writing apparatus.

Further, the serial interface PROM writing apparatus according to the fifth aspect of the present invention is a serial interface PROM writing apparatus comprising a serial interface PROM and a writing apparatus for writing data to the serial interface PROM. A reference clock means for generating a reference clock to control each output timing of the write pulse control means, the data address setting means, and the data storage means, and the address data necessary for writing the control data from the data address setting means, for parallel output. An address data / control data selection signal for controlling output to the means and the data storage means is output to the data address setting means in response to a write instruction signal, and inputted to the data holding means through the serial-parallel conversion means for the address data signal At the address specified by the address data, Write pulse control means for outputting a write pulse signal to the serial interface type PROM in response to a write instruction signal for writing data to the serial interface type PROM; and responding to address data / control data selection signal of the write pulse control means. And data address setting means for outputting the set address data to the data storage means and the parallel output means, control data to be written to the serial interface PROM, and address data to designate an address to which the control data is to be written. A data storage means for outputting the control data to the parallel output means in response to the address data output from the data address setting means, and a parallel of a plurality of bits input from the data storage means for each address data signal set by the data address setting means. brother Control data signals in parallel to the parallel / serial / parallel conversion means for the control data signal and the temporary storage means in parallel form, and input the address data signal set by the data address setting means to the parallel-to-parallel conversion means for the address data signal. Parallel output means for outputting as it is, temporary storage means 15 for temporarily storing the control data output from the data storage means through the parallel output means until the next control data is output, and parallel from the parallel output means. A parallel serial conversion means for the address data signal, which converts the address data signal output in the form of a signal into a serial signal and outputs it to a signal selection means, and the control data signal output in parallel from the parallel output means. Is converted to the output signal and output to the signal selection means. Whenever the control data is written to the serial interface PROM through the call selection means and the transmission means, the control data written at that time is inputted from the serial interface PROM in a serial form through a read means to form a parallel control data signal. Parallel and serial conversion for control data signals for converting and outputting the converted control data signals to the comparison means, and parallel serial conversion for address data signals in response to the address data / control data selection signal outputted from the write pulse control means. Signal selection for selecting one of the serial address data signal outputted from the means and the control data signal outputted from the serial / serial / parallel conversion means for the control data signal and outputting the serial signal to the transmission means as a serial signal. Means, and in series selected by said signal selection means. Transmitting and receiving means for transmitting the address data signal and the control data signal to a serial interface PROM selecting means in a set of serial forms, and control data to be written each time control data is written to the data holding means of the serial interface PROM. Reading means for reading out from the data holding means through the serial / parallel / parallel conversion means for the control data signal and the selecting means, and reading out the output from the data holding means to the parallel / parallel / parallel conversion means for the control data signal; Comparing means for comparing the control data of the parallel form output from the parallel / serial / parallel conversion means for the control data signal and the parallel control data output from the temporary storage means to confirm that the control data is correctly written in The serial interface PROM is a write pulse control means. In response to the address data / control data selection signal outputted from the control unit, one of the serial address data signal and the serial control data signal protruding from the transmitting means of the parallel-to-serial conversion means is selected. Each time the control data is written to the data holding means via the serial / parallel / parallel conversion means for the control data signal, the control data written at that time is input from the data holding means through the serial / parallel / parallel conversion means for the control data signal. Selecting means for outputting the data to the reading means, serial-to-parallel conversion means for the address data signal for converting the serial address data signal selected by the selecting means into a parallel signal, and outputting the selected data by the selecting means. Convert control data signals in serial form to parallel signals Serial / parallel for control data signal which is outputted and the control data written at that time is inputted from the data holding means, converted into a serial signal, and output to the selecting means every time the control data is written to the data holding means. The control data outputted from the serial / parallel / parallel conversion means for the control data signal is written and held at an address designated by the parallel-to-parallel conversion means and the address data signal output from the serial-to-parallel conversion means for the address data signal, and further controlled. Each time data is written, data holding means for outputting control data written at that time to the serial / parallel / parallel / parallel conversion means for the control data signal, and the data holding in response to the write pulse signal output from the write pulse control means. Serial for the control data signal at the designated address of the means That consists of writing means for instructing to write the output data of the column / parallel-to-serial conversion means is characterized.

According to the above technical means of the present invention, by using the parallel-to-serial conversion means as an adapter in the writing device of the parallel read / write PROM, control data can be written into the serial read / write PROM.

Further, since the write device of the parallel read write PROM may use a conventional write device, a low cost serial interface PROM write device can be provided.

Further, since the serial read write type PROM uses fewer ports for writing control data, the microcomputer can reduce the number of ports used as an interface port with the PROM. Therefore, the input / output port of the microcomputer can be used as various types of control ports, so that more complicated control can be performed by the microcomputer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 denotes a writing device (ROM writer), reference numeral 2 denotes parallel and serial conversion means for converting the parallel output signal of the writing device 1 into a serial signal. Serial read / write PROM (serial read / write PROM: serial interface PROM).

The writing apparatus 1 controls parallel address data and parallel type to write data to the serial read / write PROM (serial interface type PROM) 3 via the parallel-to-serial converting means 2. Output the data. As such, a writing device for outputting parallel address data and parallel control data may be a conventional writing device of a conventional parallel read write PROM.

In addition, the writing apparatus 1 of the present invention writes to the serial interface type PROM 3 (FIG. 1) via the parallel-to-serial conversion means 2 (FIG. 1) as shown in FIG. Control data and address data for designating an address to write the control data are stored, and in response to the address data output from the data address setting means 12 described later, to the history output means 14 for describing the control data. Outputting the data storage means 11 and the address data set in response to the address data / control data selection signal of the write pulse control means 13 described later to the data storage means 11 and the parallel output means 14; The data address setting means 12 and the address data for writing control data from the data address setting means 12 are set and output to the parallel output means 14 and the data storage means 11. The address data / control data selection signal to be controlled is output to the data address setting means 12 in response to the write instruction signal, and further described later through the serial / parallel conversion means 33 (Fig. 3) for the address data signal described later. A write pulse signal in response to a write instruction signal to write the control data to the serial interface type PROM 3 (FIG. 1) at an address designated by the address data input to the data holding means 34 (FIG. 3). Write pulse control means 13 for outputting the data to the serial interface PROM 3 and a plurality of bits inputted from the data storage means 11 for each address data signal set by the data address setting means 12. The control data signal of the form is outputted in parallel form to the parallel / serial / parallel conversion means 22 (FIG. 1) and the temporary storage means 15 for the control data signal. A parallel output means 14 for inputting the address data signal set by the data address setting means 12 and outputting it in parallel to the parallel data converting means 21 (Fig. 1) for the address data signal, and the data storage means ( 11, temporary storage means 15 for temporarily storing the control data output through the parallel output means 14 until the next control data is outputted, the write pulse control means 13, and the data address setting means ( 12) reference clock means 16 for generating a reference clock so as to control each output timing of the data storage means 11, and control data are correctly written in the serial interface PROM 3 (FIG. 1). In order to confirm that, parallel control data output from the parallel / serial / parallel conversion means 2 (FIG. 1) for the control data signal and parallel control data output from the temporary storage means 15 Gyoha is composed of comparison means (17).

In addition, the parallel-to-serial conversion means 2 serially outputs the address data signals output in parallel from the parallel output means 14 (FIG. 2) of the writing apparatus 1, as shown in FIG. The control data outputted in parallel form from the parallel output means 14 and the parallel output means 14 for address data signals which are converted into a signal of the form and output to the signal selecting means 23 described later. The signal is converted into a serial signal and output to the signal selecting means 23, and the signal is sent to the serial interface PROM (serial lead-type PROM) 3 through the signal selecting means 23 and the transmitting means 24. Each time control data is written, control data to be written at that time is input from the serial interface PROM 3 in a serial form through the reading means 25 to be converted into a parallel control data signal, and the converted control data signal. To comparison means 17 (FIG. 2) Parallel / parallel conversion means for the control data signal 22 and parallel-parallel conversion means for the address data signal in response to the address data / control data selection signal output from the write pulse control means 13 (FIG. 2). Means for selecting one data signal from the serial address data signal output from 21 and the serial control data signal output from the parallel / serial / parallel conversion means 22 for the control data signal and transmitting the signal as a serial signal A signal selecting means 23 for outputting to the 24 and a serial interface type PROM selecting means 31 in a set of serial address data signals and control data signals selected by the signal selecting means 23; Each time control data is written into the transmitting means 24 for transmitting to (FIG. 3) and the data holding means 34 (FIG. 3) of the serial interface type PROM, the control data written at that time is recalled. The control data signal bottle is inputted from the data holding means 34 (FIG. 3) through the serial / parallel / parallel conversion means 33 (FIG. 3) and the selecting means 31 (FIG. 3) for the control data signal. It consists of the reading means 25 which outputs to the serial / serial / parallel conversion means 22. In FIG.

In addition, the serial read / write PROM 3 is connected to the address data / control data selection signal output from the write pulse control means 13 (FIG. 2) of the writing apparatus 1, as shown in FIG. In response, one of the serial address data signal and the control data signal outputted in pairs from the transmission means 24 (FIG. 1) of the parallel-to-serial conversion means 2 is selected. Whenever the control data is written into the data holding means 34 via the serial / parallel / parallel conversion means 33, the control data written at that time is output from the data holding means 34 in the serial / parallel for the control data signal. A selection means 31 which inputs through the serial conversion means 33 and outputs the data to the reading means 5, and converts the serial address data signal selected by the selection means 31 into a parallel signal; To output The serial-to-parallel conversion means 32 for the response data signal and the serial control data signal selected by the selection means 31 are converted into a parallel signal and outputted, and the control data is sent to the data holding means 34. The serial / parallel / parallel conversion means (33) for the control data signal inputted from the data holding means (34), converted into a serial signal, and output to the selecting means (31) at each time of writing. ) And control data output from the serial / parallel / parallel conversion means 33 for the control data signal at an address designated by the address data signal output from the serial / parallel conversion means 32 for the address data signal. Each time control data is written, the data holding outputs the control data written at that time to the serial / parallel / parallel conversion means 33 for the control data signal. In response to the write pulse signal outputted from the stage 34 and the write pulse control means 13 (FIG. 2), the serial / parallel / parallel conversion for the control data signal of the designated address of the data holding means 34; It consists of writing means 35 which instructs to write the output data of the means 33.

The data holding means 34 has a configuration of 8 bits x n (n is the number of writable data) so that 8 bits of control data can be written to one address data signal.

Next, in the apparatus having the above structure, each operation in the case of writing control data to the serial read / write PROM 3 will be described in detail. In this case, as an example of the control data, a case of writing a plurality of set temperatures (17 ° C, 18 ° C, ...) to the serial read write type PROM 3 will be described.

When the write instruction signal is inputted to the write pulse control means 13, the following operation is performed while synchronizing with the clock signal of the reference clock means 16. [0035] FIG.

First, the address data / control data selection signal is output from the write pulse control means 13 to the data address setting means 12. In response to the address data / control data selection signal, an address (e.g., address 0) necessary for writing control data from the data address setting means 12 is transferred to the parallel output means 14 and the data storage means 11. Output The control data corresponding to the address is output from the data storage means 11 to the parallel output means 14. Next, in the parallel output means 14, for each address data signal set by the data address setting means 12, the control data of the data storage means 11 is converted into parallel signals in parallel and parallel conversion means ( Output to the parallel / serial / parallel conversion means 22 (FIG. 1) and the temporary storage means 15 (FIG. 2) for the control data signal of 2), and the address data of the data address setting means 12 are paralleled. The parallel signal is output to the parallel data converting means 21 for the address data signal of the parallel converting means 2 (Fig. 1). Next, the parallel data serial conversion means 21 for the address data signal converts the input parallel address data signal into a serial signal, and in the parallel data serial / parallel / parallel conversion means 22 for the control data signal. The control data signal of the input parallel type is converted into a serial signal. Next, the serial address data signal and the control data signal are input to the signal selection means 23, respectively. Next, in the signal selection means 23, in response to the address data / control data selection signal output from the writing apparatus 1, a serial address data signal output from the parallel data serial conversion means 21 for the address data signal. And one of the serial-type control data signals outputted from the parallel-to-parallel / serial-parallel conversion means 22 for the control data signal, and transmitting the selected data signal as a serial signal through one line. Output to 24).

Next, in the transmission means 24, the address data / control data line is synchronized with the clock signal (Fig. 4 (b)) of the clock means (not shown) which the transmission means 24 has on its own. The signal (a) of FIG. 4 is outputted to the selecting means 31 of the serial lead-type PROM 3 via.

In the above example, a signal is output so that predetermined 8-bit control data (for example, 17 ° C) is written into n address.

Next, the address data signal read and input by the selecting means 31 while synchronizing with the address data / control data selection signal (c in FIG. 4) output from the write pulse control means 13 of the writing apparatus 1. And control data signal are separated. The separated serial address data signal is input to the serial-parallel conversion means 32 for the address data signal and converted into the parallel address data signal, and the separated serial control data signal is used for the control data signal. It is input to the serial / parallel / parallel / serial conversion means 33 and converted into control data signals in parallel.

Next, an address is assigned to the data holding means 34 in response to the address data signal output from the serial / parallel conversion means 32 for the address data signal, and the serial / parallel / parallel / parallel conversion means 33 for the control data signal is The control data is output to the address specified as follows. On the other hand, in response to the write pulse signal output from the write pulse control means 13 of the write device 1, the write pulse (d) of FIG. 4 is output from the write means 35. The control data of the serial / parallel / parallel / serial conversion means 33 for the control data signal is written to the address designated by the data holding means 34 by the write pulse (Fig. 4D).

Whenever writing of control data to the data holding means 34 is completed, the serial / parallel / parallel conversion means 33 for the control data signal reads the control data written at that time from the data holding means 34 to select the selection means ( To 31).

The control data output to the selecting means 31 is read-in and input to the reading means 24 (FIG. 1) via the control data line (FIG. 3). The control data is output from the reading means 25 to the parallel / serial / parallel conversion means 22 for the control data signal, and the serial / serial / parallel conversion means 22 for the control data signal is used to output the data signal in series. The signals are converted into parallel signals and output to the comparing means 7 (Fig. 2) as read control data.

Next, in the comparison means 17, the control data inputted from the serial read / write PROM 3 through the reading means 25 and the parallel / serial / parallel conversion means 22 for the control data signal, and the data. The control data inputted from the storage means 11 through the parallel output means 14 and the temporary storage means 15 are compared with each other to determine whether they match. When it is determined by the comparing means 17 that the control data coincide with each other, the write operation of the next control data is performed.

The above-described operation is repeated for the subsequent writing of control data.

On the other hand, if it is determined by the comparing means 17 that the control data is inconsistent, the writing operation is stopped at that time. At this time, an alarm display can be made as needed.

The PROM to which control data is written is not limited to the serial read / write PROM that can be written and read, and the present invention can be similarly implemented to the serial write PROM to be written only.

It is apparent that the writing apparatus 1 can be realized by an electronic circuit mainly composed of a microcomputer, and the parallel-to-serial conversion means 2 can be easily realized by a logic circuit.

According to the present invention, control data can be written to a serial read write type PROM by using the parallel-to-parallel conversion means 2 as an adapter in a writing device of a parallel read write type PROM.

In addition, since the write device of the parallel read write type PROM may use a conventional write device, it is possible to provide a low cost write device.

In addition, since the serial read write type PROM uses fewer ports for writing control data, the microcomputer can reduce the number of ports used as an interface port with the PROM. Therefore, since the input / output port of the microcomputer can be used as various control ports, complicated control by the microcomputer can be performed.

Claims (9)

A parallel address data signal specifying an address of control data to be written to the serial interface PROM 3 through the parallel-to-serial conversion means 2 and a parallel control data signal composed of a plurality of bits for each address data signal. Outputting the write pulse signal to the serial interface PROM 3 so as to output to the parallel-serial conversion means 2 and to write the output data output from the parallel-serial conversion means 2 to the serial interface-type PROM 3. Parallel serial conversion for converting the address data signal and the control data signal output in parallel from the writing device 1 and the writing device 1 into serial signals and outputting the serial data to the serial interface PROM 3. A serial interface PROM writing device, characterized in that it comprises a means (2). The reference clock according to claim 1, wherein said writing device (1) generates a reference clock to control output timings of the write pulse control means (13), the data address setting means (12), and the data storage means (11). An address data / control data selection signal for controlling address 1b and address data necessary for writing control data from the data address setting means 12 and outputting to the data storage means 11 to a write instruction signal. In response to the data address setting means 12 and outputting the control data to the address specified by the address data input to the serial interface PROM 3 through the parallel-serial conversion means 2; Write pulse control means 13 for outputting a write pulse signal to the serial interface PROM 3 in response to a write instruction signal to write to (3); and the write pulse control number The data address setting means 12 for outputting the address data signal set in response to the address data / control data selection signal of the stage 13 to the data storage means 11 and the serial interface type PROM 3 can be written. Data storage means 11 for storing control data and address data for designating an address to write the control data, and outputting the control data in response to an address data signal output from the data address setting means 12; Serial interface type PROM writing device comprising a. A parallel address data signal specifying an address of control data to be written to the serial interface PROM 3 through the parallel-to-serial conversion means 2 and a parallel control data signal composed of a plurality of bits for each address data signal. A parallel device for address data signals for converting the writing device 1 outputted to the parallel serial conversion means 2 and the address data signals outputted in parallel from the writing device 1 into address data signals in a serial form A conversion means 21, parallel control means 22 for control data signals for converting the control data signals output in parallel from the writing apparatus into address control data signals in a serial form, and the address data signal bottle; Parallel conversion means for the address data signal of the serial form outputted from the serial conversion means 21 and the control data signal. A transmission means 24 for transmitting the control data signal of the serial form outputted from (22) and outputting to the serial interface PROM 3 in a set of serial forms, and in parallel form from the writing device 1; Parallel-to-serial conversion means (2) for converting the output address data signal and the control data signal into serial-type signals, respectively, and outputting them to a serial interface type PROM (3); A serial interface PROM which designates an address of the control data in response to the address data signal of 24 and writes the control data to the designated address in response to a write pulse signal of the write pulse control means 13; 3) write pulses to the serial interface PROM in response to a write instruction signal to write the output data output from the parallel-to-serial conversion means 2 to a serial interface PROM. Serial interface type PROM write wherein the write pulse consisting of a means 13 for outputting a signal. 4. The reference clock according to claim 3, wherein the writing apparatus 1 generates a reference clock to control each output timing of the write pulse control means 13, the data address setting means 12, and the data storage means 11. An address data / control data selection signal for controlling the means 16 and the address data for writing the control data from the data address setting means 12 and outputting to the data storage means 11 to the write instruction signal. In response to the data address setting means 12 and outputting the control data to the address specified by the address data input to the serial interface PROM 3 through the parallel-serial conversion means 2; Write pulse control means 13 for outputting a write pulse signal to the serial interface PROM 3 in response to a write instruction signal to write to (3); and the write pulse control number Data address setting means 12 for outputting to the data storage means 11 an address data signal set in response to the address data / control data selection signal of (13), and control data to be written to the serial interface PROM 3; And data storage means (11) for storing address data for designating an address to write the control data, and for outputting the control data in response to an address data signal output from the data address setting means (12). A serial interface PROM writing device characterized by the above-mentioned. 5. The serial interface PROM (3) according to claim 3 or 4, wherein the serial interface PROM (3) transmits the parallel-serial conversion means (2) in response to an address data / control data selection signal output from the write pulse control means (13). Selecting means (31) for selecting any one of a serial address data signal and a control data signal outputted in pairs from the means (24), and a serial address data signal selected by the selecting means (31); Serial-to-parallel conversion means 32 for address data signals which are converted into a parallel signal and output, and a control data signal serial that converts and outputs a serial-type control data signal selected by the selection means 31 into a parallel signal. The control data signal at an address designated by the parallel conversion means 33 and the address data signal output from the serial-parallel conversion means 32 for the address data signal. Data holding means (34) for writing and holding control data output from the serial-to-parallel conversion means (33), and the data holding means (34) in response to a write pulse signal output from the write pulse control means (13). And writing means (35) for instructing to write the output data of the serial-to-parallel conversion means (33) for the control data signal at the designated address of the serial interface type PROM writing apparatus. Outputs the parallel address data signal of the parallel type designating the address of the control data to be written to the serial interface PROM 3 via the transmission means 24 to the parallel data serial conversion means 21 for the address data signal, and further, the address data signal. A writing device (1) for outputting a parallel control data signal composed of a plurality of bits each time to the parallel / serial / parallel conversion means (22) and the comparing means (17) for the control data signal, and the parallel form from the writing device (1). A parallel serial conversion means 21 for address data signals for converting the address data signal outputted from the address data signal into a serial address data signal and outputting the same to the transmission means 24; The control data signal is converted into a serial control data signal and output to the transmission means 24, and the control is transmitted to the serial interface PROM 3 via the transmission means 24. Each time data is written, control data written at that time is input from the serial interface type PROM 3 through the reading means 25 in serial form, and the control data input in serial form is converted into a parallel control data signal. And serial-to-parallel / serial / parallel conversion means (22) for control data signals for outputting the converted control data signal to the comparison means (17), and serial address data output from the serial-to-parallel conversion means (21) for the address data signal. A transmission means 24 for transmitting a signal and a serial control data signal output from the parallel / serial / parallel conversion means 22 for the control data signal and outputting the serial data to the serial interface PROM 3 in a set of serial forms; The address of the control data is designated by the address data signal of the transmission means 24, and the support pulse signal is written by the write pulse signal of the write pulse control means 13; A serial interface PROM (3) for writing the control data to the address, a write pulse control means (13) for outputting a write pulse signal instructing the writing of the control data to the designated address, and the serial interface PROM ( 3) reading means 25 for inputting the control data written at that time each time the control data is written to 3) and outputting to the parallel / serial / parallel conversion means 22 for the control data signal; and the serial interface PROM. Parallel to the control data signal output from the parallel / serial / parallel conversion means 22 for the control data signal and the parallel output from the writing apparatus 1 so as to confirm that the control data is correctly written in (3). A serial interface type PROM writing device, characterized in that it comprises a comparison means (17) for comparing control data signals of the type. The reference clock according to claim 6, wherein the writing apparatus (1) generates a reference clock to control output timings of the writing pulse control means (13), the data address setting means (12), and the data storage means (11). An address data / control data selection signal for controlling the means 16 and the address data for writing the control data from the data address setting means 12 and outputting to the data storage means 11 to the write instruction signal. The control data is output in response to the data address setting means 12, and the control data is transferred to the serial interface PROM 3 at the address designated by the address data inputted to the serial interface PROM 3 through the transmission means 24. Write pulse control means (13) for outputting a write pulse signal to the serial interface type PROM (3) in response to a write instruction signal so as to write to the? Writes data address setting means 12 for outputting address data set in response to the address data / control data selection signal to the data storage means 11, control data to be written to the serial interface PROM 3, and the control data; And a data storage means (11) for storing address data specifying an address to be set and for outputting the control data in response to the address data output from the data address setting means (12). PROM writing device. The serial interface type PROM (3) according to claim 6 or 7, wherein the serial interface PROM (3) transmits the parallel-serial conversion means (2) in response to an address data / control data selection signal output from the write pulse control means (13). The data holding means 34 selects one of the data signals of the serial address data signal and the control data signal outputted as a set from the means 24, and through the serial / parallel / parallel / serial conversion means 33 for the control data signal. Each time the control data is written into the control data, the control data written at that time is inputted from the data holding means 34 through the serial / parallel / parallel / parallel conversion means 33 for the control data signal to the reading means 25. A selection unit 31 for outputting data and a serial data address address signal for converting and outputting the serial address data signal selected by the selection means 31 into a parallel signal; Whenever the conversion means 32 and the serial control data signal selected by the selection means 31 are converted into a parallel signal and outputted, and the control data is written into the data holding means 34. The parallel / parallel / parallel conversion means 33 for the a-data signal inputted from the data holding means 34, converted into a serial signal, and output to the selection means 31; The control data output from the serial / parallel / parallel conversion means 33 for the control data signal is written and held at the address designated by the address data signal output from the data-parallel / parallel conversion means 32, and the control data. Data holding means 34 for outputting the control data written at that time to the serial / parallel / parallel / serial conversion means 33 for the control data signal each time is written; In response to the write pulse signal output from the pulse control means 13, instructing to write the output data of the serial / parallel / parallel / serial conversion means 33 for the control data signal at the designated address of the data holding means 34; A serial interface PROM writing device, characterized in that it comprises a writing means (25). In the serial interface PROM writing apparatus comprising a serial interface PROM (3) and a writing apparatus for writing data to the serial interface PROM, the writing apparatus (1) and (2) are write pulse control means (13). ), The reference clock means 16 for generating a reference clock so as to control the output timing of the data address setting means 12 and the data storage means 11, and the writing of control data from the data address setting means 12. Outputs the address data / control data selection signal for controlling the necessary address data to be output to the parallel output means 14 and the data storage means 11 to the data address setting means 12 in response to a write instruction signal; And serializing the control data to the address specified by the address data input to the data holding means 34 through the serial-to-parallel conversion means 33 for the address data signal. Write pulse control means 13 for outputting a write pulse signal to the serial interface PROM 3 in response to a write instruction signal for writing to the face type PROM 3; and address data of the write pulse control means 13; And data address setting means 12 for outputting address data set in response to the control data selection signal to the data storage means 11 and the parallel output means 14, and the control data to be written to the serial interface type PROM 3; Data storage means for storing address data specifying an address to write the control data and outputting the control data to the parallel output means 14 in response to the address data output from the data address setting means 12; (11) and a plurality of bits input from the data storage means (11) for each address data signal set by the data address setting means (12). A control data signal having a true parallel form is output to the parallel / serial / parallel conversion means 22 and the temporary storage means 15 for the control data signal as it is, and the address data signal set by the data address setting means 12 is output. Parallel output means 14 for inputting and outputting in parallel to the parallel data conversion means 21 for the address data signal, and the control data output from the data storage means 11 through the parallel output means 14 are as follows. Temporary storage means 15 for temporarily storing until control data is output, and the address data signal output in parallel form from the parallel output means 14 is converted into a signal of serial form to signal selection means 23. Parallel-to-parallel conversion means 21 for address data signals to be output and the control data signals output in parallel from the parallel output means 14 as signals in a serial form; The control data is converted and output to the signal selection means 23, and the control data written at that time is written every time the control data is written to the serial interface PROM 3 through the signal selection means 23 and the transmission means 24. Parallel data for the control data signal inputted from the serial interface type PROM 3 through the read means 25 to be converted into parallel control data signals and outputted to the comparing means 17. Serial address data signal output from the serial data conversion means 21 for the address data signal in response to the address data / control data selection signal output from the write / parallel conversion means 22 and the write pulse control means 13; And means for selecting any one of the serial-type control data signals outputted from the parallel-to-parallel / serial-parallel conversion means 22 for the control data signal and transmitting them as a serial-type signal. Means for selecting the serial interface type PROM (3) in which the signal selection means (23) outputted to (24) and the serial address data signal and the control data signal selected by the signal selection means (23) in a set of serial forms; Each time control data is written to the transmission / reception means 24 transmitted to the 31 and the data holding means 34 of the serial interface PROM, the control data to be written from the data holding means 34 to the control data. Reading means 25 which reads-in and inputs through the signal serial / parallel / parallel conversion means 33 and the selection means 31, and outputs them to the serial / parallel / parallel conversion means 22 for the control data signal; and the serial interface. In order to confirm that the control data is correctly written in the type PROM 3, the parallel-type control data output from the parallel / serial / parallel conversion means 22 for the control data signal and the temporary storage means 15 are output.A comparison means 17 for comparing the control data in the form of a column, wherein the serial interface PROM 3 transmits the transmission means in response to the address data / control data selection signal output from the write pulse control means 13; The data holding means 34 selects one of the data signals of the serial address data signal and the control data signal outputted as a pair from the 24, and through the serial / parallel / parallel / serial conversion means 33 for the control data signal. Whenever the control data is written into the control data, the control data written at that time is inputted from the data holding means 34 through the serial / parallel / parallel / serial conversion means 33 for the control data signal, and the data is output to the reading means 25. An address data signal for converting and outputting a serial address data signal selected by said selecting means 31 into a parallel signal; Parallel and parallel conversion means 32 and serial control data signals selected by the selection means 31 are converted into parallel signals and outputted, and the control data is written into the data holding means 34. And serial / parallel / parallel conversion means 33 for control data signals inputted from the data holding means 34, converted into serial signals, and output to the selection means 31 each time. Writes and holds the control data output from the serial / parallel / parallel conversion means 33 for the control data signal at an address designated by the address data signal output from the serial / parallel conversion means 32 for the address data signal; Each time control data is written, data holding means 34 for outputting the control data written at that time to the serial / parallel / parallel / serial conversion means 33 for the control data signal; In response to the write pulse signal outputted from the write pulse control means 13, to write the output data of the serial / parallel / parallel / parallel conversion means 33 for the control data signal at the designated address of the data holding means 34; A serial interface PROM writing device, characterized by comprising writing means (35) for instructing.

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