Intel UPI-C42 - Manual (Page 22)

UPI-C42 UPI-L42
WAVEFORMS (Continued)
COMBINATION PROGRAM VERIFY MODE
290414 – 25
NOTES
1 A
0
must be held low (0V) during program verify modes
2 For V IH V IH1 V IL V IL1 V DDH and V DDL please consult the D C Characteristics Table
3 When programming the 87C42 a 0 1 mF capacitor is required across V
DD
and ground to suppress spurious voltage
transients which can damage the device
VERIFY MODE
290414 – 26
NOTES
1 PROG must float if EA is low
2 PROG must float or e 5V when EA is high
3 P
10 – P 17 e 5V or must float
4 P
24
– P
27 e 5V or must float
5 A 0 must be held low during programming verify modes
22