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93AA76A_12 Datasheet, PDF (11/36 Pages) Microchip Technology – 8K Microwire Compatible Serial EEPROM
93AA76A/B/C, 93LC76A/B/C, 93C76A/B/C
3.6 Program Enable (PE)
This pin allows the user to enable or disable the ability
to write data to the memory array. If the PE pin is tied
to VCC, the device can be programmed. If the PE pin is
tied to VSS, programming will be inhibited. This pin
cannot be floated – it must be tied to VCC or VSS. PE is
not available on 93XX76A or 93XX76B. On those
devices, programming is always enabled.
 2003-2012 Microchip Technology Inc.
DS21796M-page 11