KR950001290B1 - Eeprom data writer - Google Patents

Abstract

The apparatus copies the same data as at most 30 EEPROM (electrically erasable and programmable read-only momory) simultaneously, copies or reads data to or from a specific ROM, and recognizer the type of ROM. The apparatus consists of a microprocessor (10) executing commands, an EEPROM part (11) having a plurarity of EEPROM communicating with microprocessor via multiple ports, EPROM part (12) storing and providing command programs, and input/display part (13) having function and number keys and display equipment.

Description

EEPROM Data Copy Device

1 is a block diagram showing the present invention.

2 is a detailed circuit diagram of the EEPROM portion.

3 is a control time diagram showing when data is written to the EEPROM.

4 is a control time diagram showing when the data of the EEPROM is read.

5 is a control flowchart of data writing in accordance with the present invention.

6 is a control flowchart for designating a specific EEPROM according to the present invention.

7 is a control flowchart of data copying according to the present invention.

8 is a control flowchart of data read according to the present invention.

9 is a control flowchart when comparing data according to the present invention.

* Explanation of symbols for main parts of the drawings

10: microprocessor 11: EEPROM section

12: EPROM. 13: key input and display unit M _{1 to} M ₁₀ : mux / demux

ER _{1 to} EP ₃₂ : EEPROM IV ₁ , IV ₂ : Inverter

The present invention relates to a data copying apparatus, and in particular, the function of copying the same data to up to 30 EEPROM (Electrically Erasable and Programmable ROM) at the same time under the control of a microprocessor and selecting only a specific ROM. The present invention relates to an EEPROM data copying device which can perform a function of reading data recorded in a ROM, a data comparison function with a specific ROM, and a model determination function of a ROM.

For example, home appliances such as microwave ovens can make new masks by using EPIROM (hereinafter referred to as EEPROM) instead of using existing MASK ROM to request data change due to function improvement. You can change the improved data values at any time without the need.

Therefore, in order to mass-produce data with improved functions in EEPROM, there has been an increasing need for writers and copiers capable of writing data into EEPROM.

Conventionally, devices that can reduce the necessity to write data to EEPROM or to copy several EEPROMs at the same time have been proposed.

However, the above-mentioned devices have less than a few EEPROMs capable of copying data at the same time, which can lead to inefficiency in productivity due to the recent trend of mass production of home appliances. The ability to do it was very limited.

Accordingly, the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to write and read data in an EEPROM as well as to simultaneously copy the same data to up to 30 EEPROMs. Function, the ability to select and copy only specific EEPROMs, the ability to compare data between specific EEPROMs and selected EEPROMs, the ability to determine the type of EEPROM, An object of the present invention is to provide an EEPROM data copy device having a comprehensive display function.

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

FIG. 1 is a control block diagram of the present invention, which includes an erasable and programmable ROM (EPROM) 12 in which a drive program of the apparatus is incorporated, the EPROM 12, an address bus (A-bus), and a data bus (D-). bus) connected to the microprocessor 10 having a microprocessor 10 for controlling the overall operation of the apparatus by a program of the EPROM 12, a numeric key and other function keys, and a display device. A key input and display unit 13 for displaying a key input of a predetermined command, an output from the microprocessor 10 in a predetermined form, and ports P _{0 to} P ₉ of the microprocessor 10. It is composed of an EEPROM section 11 connected through and executing writing, reading, and copying of a plurality of EEPROMs.

2 is a circuit diagram illustrating the EEPROM unit 11 in more detail. The inverter IV _{1 to} which the ports S _{0 to} S ₄ are connected through the ports P ₀ to P ₉ of the microprocessor 10 is shown in FIG. (ⅳ ₂₎ and, via the inverter (ⅳ ₁₎ is the control port (S ₀ ~S ₄₎ is, via the inverter (ⅳ ₁₎ is connected to the enable port (E), the microprocessor (10 Muxplex / Demux to which the control port (P ~ P) and I / O common port (I / O) are connected.

ltiplexer (M _{1 to} M ₁₀ ) and a plurality of EEPROMs (ER _{1 to} ER ₃₂ ) connected to the input / output ports I _{0 to} I _{15 of} the mux / demux M _{1 to} M ₁₀ to receive data. It consists of.

In addition, the mux / demux (M ₁ ~ M ₁₀ ) is connected to the input and output common port (I / O) and the input / output port (I ₀ ~ I ₁₅ ) according to the value of the control port (S ₀ ~ S ₄ ). Functioning here, the port E is a low enable port E and the functions of the mux / demux M _{1 to} M _{10 are} shown in the following table.

TABLE 1

As shown in Table 1, a signal line (CS / RS / SCK / DI / DO / RY) necessary for reading and writing data to the EEPROM is provided in the input / output common port (I / O) of the mux / demux (M _{1 to} M ₁₀ ). It is connected from the ports (P _{0 to} P ₄ ) of ( ₁₀ ), and 16 EEPROMs (ER _{17 to} ER ₃₂ ) are connected to the ports I _{0 to} I _{15 of the} top 5 mux / demux (M _{0 to} M ₁₀ ). ) Is connected to each signal line, and 16 EEPROMs (ER _{17 to} ER ₃₂ ) are connected to the lower five mux / demux (M _{6 to} M ₁₂ ) ML terminals (I _{0 to} I ₁₅ ), respectively.

In addition, the EEPROM (ER _{1 to} ER ₃₂ ) is composed of a coating EEPROM (ER _{1 to} ER ₃₀ ), the original EEPROM (ER ₃₁ ) and the system EEPROM (ER ₃₂ ), the serial transmission method (SERIAL I / O ) Is equipped.

Hereinafter, the process of writing and reading data in the EEPROM will be described in more detail.

First, FIG. 3 is a control time diagram showing when data is written to the EEPROM. In order to write the data to a specific EEPROM (ER ₃₁ : original), the microprocessor 10 uses the reset port RS of the EEPROM section 11. FIG. And a low signal to the chip select port CS and a '10100100' signal to the data input port D1 during the first eight pulse inputs in synchronization with the synchronous clock SCK. At this time, the original EEPROM (ER ₃₁ ) recognizes that data is inputted, and then inputs address (A _{0 ~} A ₇ ) to the data input port (D1) of EEPROM (ER ₃₁ ) first from the 9th pulse and then the 17th synchronous clock. Serial transmission is performed in which data (D _{0 to} D ₁₅ ) is inputted from a pulse.

At this time, the data output port DO maintains a high impedance state, and the execution readiness port RY goes low once at the end of data input in the high state to indicate that the writing is completed.

4 is a control time diagram relating to the lead of data. When the reset port RS and the chip select port CS are turned low, and the first eight synchronous clock signals are output, the data input port DI is shown. ) When the input signals "10.101 million, in turn lead to a command that is recognized for the particular EEPROM ninth clock pulse from the address input to the data input port _{(DI) (a 0 ~A 7} ) data (D ₀ ~D ₁₅ ) is output to the microprocessor 10 through a data output port DO.

Thus, the microprocessor 10 reads the data. At this time, the execution preparation port RY indicates that it is running in a high state.

Hereinafter, the operation and effects of the present invention will be described in more detail with reference to the control flowcharts of FIGS. 5 to 9.

5 is a procedure showing the write operation of the device, first keying into the microprocessor 10 by pressing a key input and a light key not shown in the display unit 13, and only the user can use the device. A cryptographic key of a predetermined key combination is input by the present function.

At this time, the microprocessor 10 checks the input of the encryption key to determine whether the password matches, and if the password matches, the data input port DI of the original EEPROM ER ₃₁ of the EEPROM unit 1 as described above. Outputs '10100100'.

The address is designated by key operation of the key input and display unit 13, and when the corresponding data is keyed in, the corresponding data is written to the corresponding address of the original EEPROM ER ₃₁ in synchronization with the synchronization pulse signal SCK.

In this case, the address and data resulting from the key manipulation are displayed on the display device, which is not shown, and the user can write data while checking the address.

FIG. 6 is a procedure showing a function of selecting a specific EEPROM from 1 to 30 coated use EEPROMs (ER ₁ to ER ₃₀ ) when copying or comparing data. First, not shown through the key input and display unit 13. Press the specified EEPROM key and indicate whether the _1st EEPROM (ER ₁ ) is designated. At this time, it is possible to input the change. The EEPROM (ER ₀ ~ ER ₃₀ ) is changed by the UP / DOWN key (not shown) and the change of the designated state is inputted. This key operation is input to the microprocessor 10 and stored in the system EEPROM ER ₃₂ of the EEPROM unit 11 by the signal processing of the microprocessor 10.

Therefore, once the specific ROM is selected, the memory is stored before the new designation.

FIG. 7 is a procedure illustrating a copying process. When the copy key of the key input and display unit 13 is inputted, FIG. 7 determines the EEPROM factor selected by selecting the specific EEPROM of FIG. 6 in order from EEPROM No. ₁ (ER ₁ ). If it is determined that the selected EEPROM is incremented during the determination process, the data recorded in the original EEPROM ER ₃₁ is read and the original data is copied (written) to the selected EEPROM. You can copy (ER ₁ to ER ₃₀ ).

Eighth turn EEPROM with the procedure indicating to lead the data recorded in the (ER ₁ ~ ER _30), enter the lead key not shown in the key input and display unit 13 _{and, EEPROM (ER 1 ~ ER 30} ) Key in the desired EEPROM number.

When the address is input to the selected EEPROM, the microprocessor 10 inputs data corresponding to the corresponding address of the EEPROM, and then displays the data on the display device of the key input and display unit 13.

In addition, by changing the address of the EEPROM with the UP / DOWN key of the key input and display unit 13, the corresponding data value can be read.

9 is a procedure showing the function of comparing the data of the coated sheath EEPROM (ER ₁ to ER ₃₀ ) with the original EEPROM (ER ₃₁ ). The key input and the comparison key not shown in the display unit 13 are inputted. After inputting and selecting the number of the EEPROM to be compared, the data of the original EEPROM (ER ₃₁ ) for the 0 address is read, and then the data of the same address of the selected EEPROM is read and compared with each other in the microprocessor 10. do.

At this time, if the data value is the same and is incremented to the next address, it goes wrong and the program is stopped by the STOP command and an error signal is generated. In this case, the Skip Key or the Retry Key You can select and enter.

Selecting the skip key proceeds to the next address, and selecting the retry key repeats the above-described comparison. However, when the comparison result is the same, it is incremented to the next address, and the comparison is continued sequentially.

In addition, the present invention can not be distinguished by the appearance despite the EEPROM having different data, it has a function to determine the type of EEPROM by reading this data in a format that puts specific data at a specific address have.

As described above, the present invention can not only copy data to a large amount of EEPROM at a time, but also select and copy only a specific EEPROM to meet the increasing reality of electronic products using EEPROM, and compare it with the original EEPROM. Specific EEPROMs can be compared with each other. EEPROM data with a comprehensive function that displays specific signals by inputting specific data at a specific address and displays the type of each other. The range of use as a copying device is extremely large.

Claims (3)

Write data to a specific EEPROM, select a specific EEPROM for copying, reading, or comparing data, copying the data stored in the specific EEPROM up to 30 selected EEPROMs, and copying the data of the specific EEPROM and the selected EEPROM. A microprocessor 10 for processing control signals such as comparing data of the same; Inverters IV ₁ and IV _{2 to} which ports S0 to S4 are connected through ports P5 to P9 of the microprocessor 10, and control ports S ₀ to 4 through the inverter IV ₁ . S ₃ ) is connected to the enable port E through the inverter IV ₂ , and the control ports P _{0 to} P ₄ and the input / output common port I / O of the microprocessor 10 are connected to each other. Multiple EEPROMs (ER) connected to the mux / demux M _{1 to} M | ₁₀ connected to the input / output ports I _{0 to} I _{15 of} the mux / demux M _{1 to} M ₁₀ to receive data. _An EEPROM section 11 consisting of _{1 to} ER ₃₂ ; An EPROM 12 for storing a drive program of the apparatus and providing data in accordance with a request of the microprocessor 10; And a plurality of function keys, numeric keys, and a display device to write data to the original EEPROM, to select only a specific EEPROM among the coated EEPROMs, to copy the data of the original EEPROM to the selected EEPROM, and to A command for comparing the data with the data of the selected cloth-use EEPROM, a command for reading data from the selected cloth-use EEPROM, and the like are inputted to the microprocessor 10 to display the output of the microprocessor 10. An EEPROM data copying device comprising a key input and a display unit (13). The EEPROM (ER _{1 to} ER ₃₂ ) of the EEPROM section 11 includes an original EEPROM (ER ₃₁ ) recorded at the time of initial data writing, a coating use EEPROM (ER _{1 to} ER ₃₀ ), and selected specific EEPROM (EE ₃₂ ) data copying device, characterized in that the system consists of EEPROM (ER ₃₂ ) for storing the number and number of EEPROM (ER ₁ ~ ER ₃₀ ). According to claim 1, EEPROM data copying device configured to determine the type of EEPROM difficult to distinguish the appearance by recording specific data at a specific address of the coating EEPROM (ER ₁ ~ ER ₃₀ ).