Datasheet

93AA86A/B/C, 93LC86A/B/C, 93C86A/B/C
DS21797L-page 12 2003-2012 Microchip Technology Inc.
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 V
CC, the device can be programmed. If the PE pin is
tied to V
SS, programming will be inhibited. This pin
cannot be floated, it must be tied to V
CC or VSS. PE is
not available on 93XX86A or 93XX86B. On those
devices, programming is always enabled.