AR# 2571

PROMs: What is the unprogrammed/default state of each byte address in an XC1700 PROM?

Description

Urgency: Standard

General Description

The question often arises as to what the unprogrammed

state of an XC1700/D/L/E PROM is.

Solution

The unprogrammed state of each byte address is 'FFH', or in

other words, each bit is programmed to a '1'. This includes

the byte addresses that control the PROM programmable reset

polarity, which causes the polarity to default to active

HIGH reset.

AR# 2571
Date 05/08/2014
Status Archive
Type General Article