NEC uPD78056Y User Manual
Page 557
557
CHAPTER 26
µ
PD78P054, 78P058
Figure 26-7. Byte Program Mode Timing
Cautions 1. Be sure to apply V
DD
before applying V
PP
, and remove it after removing V
PP
.
2. V
PP
must not exceed +13.5 V including overshoot voltage.
3. Disconnecting/inserting the device from/to the on-board socket while +12.5 V is being applied
to the V
PP
pin may have an adverse affect on device reliability.
A0-A16
D0-D7
Program
Hi-Z
Program Verify
Data Input
Data Output
V
PP
V
DD
V
DD
+1.5
V
DD
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
PP
V
DD
CE
PGM
OE
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