User guide

27
AT89C55WD
1921B–MICRO–09/02
Parallel Chip Erase Mode
10 ms
Test Conditions
Setup
Test Conditions Setup
ALE/PROG
P3<0>
Erase
DC
Erase
Erase
V
CC
= 4.5V to 5.5V
Wait 10 ms before
reprogramming
V
CC
= 6.5V
DC
Erase
200 ns
200 ns