HD64F3437TF16 Datasheet, PDF (538/752 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.

Bit 3—Erase-Verify Mode (EV): Selects transition to or exit from erase-verify mode. (Do not set
the SWE, ESU, PSU, PV, E, or P bit at the same time.)
Bit 3: EV
0
1
Description
Exit from erase-verify mode
Transition to erase-verify mode
[Setting condition]
When SWE = 1
(Initial value)
Bit 2—Program-Verify Mode (PV): Selects transition to or exit from program-verify mode. (Do
not set the SWE, ESU, PSU, EV, E, or P bit at the same time.)
Bit 2: PV
0
1
Description
Exit from program-verify mode
Transition to program-verify mode
[Setting condition]
When SWE = 1
(Initial value)
Bit 1—Erase Mode (E): Selects transition to or exit from erase mode. (Do not set the SWE, ESU,
PSU, EV, PV, or P bit at the same time.)
Bit 1: E
0
1
Description
Exit from erase mode
Transition to erase mode
[Setting condition]
When SWE = 1 and ESU = 1
(Initial value)
Bit 0—Program Mode (P): Selects transition to or exit from program mode. (Do not set the
SWE, ESU, PSU, EV, PV, or E bit at the same time.)
Bit 0: P
0
1
Description
Exit from program mode
Transition to program mode
[Setting condition]
When SWE = 1 and PSU = 1
(Initial value)
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