CN2501159Y

CN2501159Y - Reproducer for serial programmable read-only storage

Info

Publication number: CN2501159Y
Application number: CN 01243965
Authority: CN
Inventors: 张明龙; 张啸; 任家辉
Original assignee: Qingdao Hisense Electronics Co Ltd
Current assignee: Qingdao Hisense Electronics Co Ltd
Priority date: 2001-07-16
Filing date: 2001-07-16
Publication date: 2002-07-17
Anticipated expiration: 2011-07-16

Abstract

Provided is a replicator for a serial electric erasable programmable read only memory. The utility model belongs to the television manufacture process equipment and comprises a shell body, a panel and an electronic circuit. The electronic circuit is composed of a master MCU, a sub-MCU, a master slice writing base, a memory, a switch selection chip, a sub-slice writing base, a display driver, an LED display, a buzzer and the power. The master and the sub MCU are both of the AT 89C51 type and the memory is of the AT 28C256 type. The utility model can not only copy chips with a little memory capacitance of single byte addressing but also can copy chips with a strong memory capacitance. The copy process is fast and the working efficiency is high. For different manufacturers and E<2> PROM of different types, corresponding reading and writing modes can be chosen. The utility model can be widely used on the manufacture line of televisions.

Description

The reproducer of serial EEPROM (Electrically Erasable Programmable Read Only Memo)

Technical field

The utility model relates to televisor production labor skill equipment, and a kind of E that is used for finishing fast on the televisor production line more clearly says so ²The PROM chip write reproducer with the serial EEPROM (Electrically Erasable Programmable Read Only Memo) of verification.

Background technology

Existing EEPROM (Electrically Erasable Programmable Read Only Memo) (E ²PROM) there is following shortcoming and defect in reproducer: 1, duplicate E ²The serial data bus I that the two-wire of PROM chip is two-way ²C has only one group, can only be to the chip copy orderly, and speed is slow, and production efficiency is low.2, for the E of large buffer memories such as 32Kbit, 64Kbit, 128Kbit ²PROM chip, its data still adopt computing machine to write, and efficient is too low.3, for the E of different manufacturers, different model ²The read-write mode of PROM chip might be different, and versatility is poor.The purpose of this utility model, be to overcome above-mentioned deficiency, the little memory space chip of a kind of both reproducible byte addressing is provided, the reproducible again large buffer memory chip that needs the double byte addressing, reproduction speed is fast, production efficiency is high, for the E of different manufacturers, different model ²The PROM chip can be selected the reproducer of the serial EEPROM (Electrically Erasable Programmable Read Only Memo) of corresponding read-write mode, highly versatile.

Summary of the invention

In order to achieve the above object, the reproducer of the utility model serial EEPROM (Electrically Erasable Programmable Read Only Memo) by housing, be installed in the electronic circuit in the housing and the panel that is installed on the housing is constituted.Electronic circuit is by host scm, the button that links to each other with host scm, with host scm with serial communication link to each other from single-chip microcomputer, with from single-chip microcomputer with I ²One group of master slice programming seat that the C bus links to each other, with the internal memory that links to each other from single-chip microcomputer, and from single-chip microcomputer with 2 * I ²Two switches that the C bus links to each other respectively select chips, respectively with on two switches are selected 8 groups of sub-sheet programming seats that one of chips link to each other partly or second, the display driver that links to each other with host scm and light-emitting diode display and hummer and power circuit constitute.Host scm and be the AT89C51 type from single-chip microcomputer, internal memory is the AT28C256 type.

When duplicating, the E of data program will be finished writing ²The PROM chip inserts the locking of master slice programming seat as master slice, will desire to write the E of data program again ²The PROM chip inserts 8 groups of 16 programming seats respectively.Start earlier and read in button, the data of master slice just are read and are stored in the AT28C256 internal memory.Restart and duplicate button, sub-sheet E ²The PROM chip is just begun to duplicate.

In two AT89C51 singlechip chips, a slice AT89C51 is mainly used to receive peripheral operation instruction and duty and shows as host CPU.Another sheet AT89C51 intercoms with host CPU mutually as from CPU, accepts operational order, to the host CPU report condition; Control 3 groups of I ²C bus and internal memory etc. carry out complicated reading and writing data and verification.

The AT28C256 storer is used for storing the E of 255Kbit ²The state that the data of PROM mother tuber, memory model and memory space are set.When duplicating with a kind of E for the second time ²During the PROM mother tuber, just can no longer put into mother tuber, directly duplicate.So just can save when duplicating at every turn and all will read E ²The time of PROM mother tuber data, make the working time of reproducer shorten greatly, E when also having improved production in enormous quantities ²The work efficiency that PROM duplicates.Even after the outage, set condition and mother tuber data are also still preserved.And, for E ²The memory space of PROM mother tuber and sub-piece size and read-write mode not simultaneously, the AT28C256 storer also can be used as terminal and finishes reproduction process.For example, E ²The PROM mother tuber is PCF8598-2, when sub-piece is AT24C08, is set at the PCF8598C-2 read-write mode earlier, reads the master slice data and stores AT28C256 into, is set at the AT24C08 read-write mode again, is written to E ²In the sub-piece of PROM.So just can realize working as E ²The read-write mode of PROM mother tuber and sub-piece is asynchronous to be duplicated.

Owing to altogether 16 E can be arranged ²The sub-piece of PROM, if allow they in order one one duplicate, then reproduction speed is the same with existing reproducer too slow.Therefore we are divided into two groups to them, respectively they are carried out the sheet choosing with two 4051 chips, respectively with one group of I ²The C bus is controlled.These two groups of I ²The C bus adopts spiral control, and is not only relevant but also independent, so just can shorten half to doubling time, improved E greatly ²The reproduction speed of PROM.

Serial E ²The PROM reproducer is to E ²When PROM reads and writes, data are carried out comprehensive verification, indication is clear and definite, the reliability height.In the reproduction process, the progress of duplicating can be shown by LED, buzzer warning.

Serial E ²The PROM reproducer adopts voltage stabilizing direct current 9V/260mA power supply.Consuming components directly connects+9V, and inside needn't install heating radiator additional, and it is very thin that shell can design, lightly attractive in appearance.

Major advantage of the present utility model is:

1, common reproducer duplicates E ²The I of PROM chip ²The C bus has only one group, to the chip copy orderly.This reproducer will need 16 E of copy data ²The PROM chip is divided into two groups, each 8.Every core assembly sheet is by one group of I ²The total line traffic control of C, totally two groups of I ²The C bus.These two groups of I ²The C bus is controlled by same CPU all, spiral work, and bus frequency all is about 100KHz.Under the normal condition, their state is almost synchronous, does not disturb mutually.As one group of I ²During C no response signal, another organizes I ²C still finishes writing of current chip and verification by normal sequential, and then synchronously following two chips is duplicated.Like this, originally, duplicated 16 E ²The time of PROM chip reduces by half, and reproduction speed is double, enhances productivity.

2, for the E of large buffer memories such as the 32Kbit, the 64Kbit that soon are used for complicated TV movement in a large number, 128Kbit ²PROM chip, its data still adopt computing machine to write, and efficient is too low.This reproducer both can duplicate outside the little memory space chip of byte addressing, can duplicate the large buffer memory chip that these need the double byte addressing again.Because to Serial E ²The read or write speed of PROM chip is very slow, thus this reproducer built-in the parallel E of a slice 256Kbit ²Prom memory is as working storage.In the time of so just needn't duplicating at every turn all the data to mother chip read, improved the efficient that these large buffer memory chips duplicate greatly.

3, the E of different manufacturers, different model ²The read-write mode of PROM chip might be different.Be both the E of 8Kbit ²The PROM chip, the AT24C08 of Atmel company is just different with the PCF8598C-2 of PHILIPS.Be both the chip of Atmel company, the read-write mode of AT24C02 and 24C16 is also different.This reproducer combines multiple read-write mode technology.The user can select corresponding read-write mode, duplicates the chip of the multiple model of many companies such as Atmel, PHILIPS, Microchip.Different chips also can duplicate mutually.Function is than powerful many of common reproducer.

Task of the present utility model comes to this and finishes.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the block scheme of its electronic circuit.

Fig. 4 is the schematic diagram of its electronic circuit.

Illustrated in figures 1 and 2, embodiment 1 is made of housing 1, electronic circuit 2, panel 3.Its control button 4 has three, is respectively to duplicate, read in, set three functions usefulness.

Shown in Figure 3, electronic circuit 2 is mainly by host scm 5, button 4, constitute from single-chip microcomputer 6, one group of master slice programming seat 7,8,8 groups of sub-sheet programming seats 9 of storer and light-emitting diode display 15 and hummer 10.

Fig. 4 shows the physical circuit of electronic circuit 2.It has used two AT89C51 singlechip chips 5 and 6, a slice AT28C256 data-carrier store 8, two 4051 switches to select integrated circuit such as chip 11, four 2003 display drivers 12, a slice 74HC373 latch 14.Its electric energy is supplied with by power circuit 13.Latch 14 is used to store intermediate data.

Embodiment

Specific embodiment of the utility model 1 is as follows: a kind of reproducer of serial EEPROM (Electrically Erasable Programmable Read Only Memo), and shown in Fig. 1～4.It is made of housing 1, electronic circuit 2, panel 3.Its control has three by strong 4, is respectively to duplicate, read in, set three functions usefulness.Electronic circuit 2 mainly by single-chip microcomputer 5, by strong 4, constitute from single-chip microcomputer 6, one group of master slice programming seat 7,8,8 groups of sub-sheet programming seats 9 of storer and light-emitting diode display 15 and hummer 10.The physical circuit of electronic circuit 2 has used two AT89C51 singlechip chips 5 and 6, a slice AT28C256 data-carrier store 8, two 4051 switches to select integrated circuit such as chip 11, four 2003 display drivers 12, a slice 74HC373 latch 14.Its electric energy is supplied with by power circuit 13.Latch 14 is used to store intermediate data.Specific embodiment of the utility model 1 can satisfy the needs of quick copy on the production line, and reproduction speed improves 1 times, the production efficiency height.The E of large buffer memories such as its reproducible 32Kbit, 64Kbit, 128Kbit ²PROM, and can duplicate the E of different manufacturers, different model ²PROM can be widely used on the televisor production line.

Claims

1, a kind of reproducer of serial EEPROM (Electrically Erasable Programmable Read Only Memo), it by housing, be installed in the electronic circuit in the housing and the panel that is installed on the housing is constituted, it is characterized in that said electronic circuit by host scm, the button that links to each other with host scm, with host scm with serial communication link to each other from single-chip microcomputer, with from single-chip microcomputer with I ²One group of master slice programming seat that the C bus links to each other, with the internal memory that links to each other from single-chip microcomputer, and from single-chip microcomputer with 2 * I ²Two switches that the C bus links to each other respectively select chips, respectively with on two switches are selected 8 groups of sub-sheet programming seats that one of chips link to each other partly or second, the display driver that links to each other with host scm and light-emitting diode display and hummer and power circuit constitute.

2,, it is characterized in that said host scm and be the AT89C51 type that internal memory is the AT28C256 type from single-chip microcomputer according to the reproducer of the described serial EEPROM (Electrically Erasable Programmable Read Only Memo) of claim 1.