Electronics America 8-Bit Single-Chip Microcontrollers User's Manual

557
CHAPTER 26 µ PD78P054, 78P058
Figure 26-7. Byte Program Mode Timing
Cautions 1. Be sure to apply V
DD before applying VPP, and remove it after removing VPP.
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 VPP 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