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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LAN9730 датащи(PDF) 92 Page - Microchip Technology |
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LAN9730 датащи(HTML) 92 Page - Microchip Technology |
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92 / 222 page  LAN9730/LAN9730i DS00001946A-page 92 2012-2015 Microchip Technology Inc. EWDS (Erase/Write Disable): After issued, the EEPROM will ignore erase and write commands. To re-enable erase/ write operations issue the EWEN command. 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. FIGURE 4-23: EEPROM EWDS CYCLE 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 4-24: EEPROM EWEN CYCLE EWDS CYCLE 0 EECLK EEDIO (INPUT) EEDIO (OUTPUT) EECS 10 00 tCSL EWEN CYCLE 0 EECLK EEDIO (INPUT) EEDIO (OUTPUT) EECS 10 11 tCSL |
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