HD64F3437TF16 Datasheet, PDF (450/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Table 19.14 Writer Mode Commands
Command
Cycles Mode
Memory read
1
Write
Erase setup/erase 2
Write
Erase-verify
2
Write
Auto-erase setup/ 2
auto-erase
Write
Program setup/
2
program
Write
Program-verify
2
Write
Reset
2
Write
PA:
EA:
RA:
PD:
PVD:
EVD:
Program address
Erase-verify address
Read address
Program data
Program-verify output data
Erase-verify output data
1st Cycle
Address Data
X
H'00
X
H'20
EA
H'A0
X
H'30
X
H'40
X
H'C0
X
H'FF
Mode
Read
Write
Read
Write
2nd Cycle
Address Data
RA
Dout
X
H'20
X
EVD
X
H'30
Write PA
PD
Read X
Write X
PVD
H'FF
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