Hitachi H8/3048 Hardware Manual page 626

Table 18-21 PROM Mode Commands
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Command
Memory read
Erase setup/erase
Erase-verify
Auto-erase setup/
auto-erase
Program setup/
program
Program-verify
Reset
PA: Program address
EA: Erase-verify address
RA: Read address
PD: Program data
PVD: Program-verify output data
EVD: Erase-verify output data
1st Cycle
Cycles Mode Address
1 Write X
2 Write X
2 Write EA
2 Write X
2 Write X
2 Write X
2 Write X
617
2nd Cycle
Data Mode Address
H'00 Read RA
H'20 Write X
H'A0 Read X
H'30 Write X
H'40 Write PA
H'C0 Read X
H'FF Write X
Data
Dout
H'20
EVD
H'30
PD
PVD
H'FF