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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LAN9220 датащи(PDF) 33 Page - Microchip Technology |
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LAN9220 датащи(HTML) 33 Page - Microchip Technology |
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33 / 142 page  2006-2017 Microchip Technology Inc. DS00002417A-page 33 LAN9220 EWEN (Erase/Write Enable): Enables the EEPROM for erase and write operations. The EEPROM will allow erase and write operations until the “Erase/Write Disable” command is sent, or until power is cycled. READ (Read Location): This command will cause a read of the EEPROM location pointed to by EPC Address (EPC_ADDR). The result of the read is available in the E2P_DATA register. Note: The EEPROM device will power-up in the erase/write-disabled state. Any erase or write operations will fail until an Erase/Write Enable command is issued. FIGURE 3-14: EEPROM EWEN CYCLE FIGURE 3-15: EEPROM READ CYCLE 0 EECLK EEDIO (INPUT) EEDIO (OUTPUT) EECS 10 11 t CSL 1 10 A6 EECS EECLK EEDIO (OUTPUT) A0 D7 D0 EEDIO (INPUT) t CSL |
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