Intel UPI-C42 Computer Hardware User Manual


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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
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