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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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T48C893 датащи(PDF) 72 Page - ATMEL Corporation |
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T48C893 датащи(HTML) 72 Page - ATMEL Corporation |
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72 / 82 page  T48C893 Rev. A4, 22-Jan-02 72 (82) 5 Data EEPROM The internal data EEPROM offers two pages of 512 bit each. Both pages are organized as 32 16 bit words. The programming voltage as well as write cycle timing is gen- erated on chip. To be compatible with the ROM parts M44Cx90/x92 two restrictions have to be taken into ac- count: D To use the same EEPROM page as with the ROM parts the application software has to write the I2C-com- mand “09h” to the EEPROM. This command has no effect for the M44Cx90/x92 if it is left inside the HEX-file for the ROM version. D Data handling for read and write is performed using the serial interface MCL. The page select is performed by either writing “01h” (page 1) or “09h” (page 0) to the EEPROM 16–bit read/write buffer Address control 8–bit data register EEPROM 2 32 16 HV–generator Timing control Mode control I/O control SCL V DD V SS SDA Page 1 Page 0 ––> write “01h” ––> write “09h” Figure 86. Block diagram EEPROM |
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