HD64F3437TF16 Datasheet, PDF (439/752 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 19.9 (1) #a, #b, #c, and #d Setting Values for Typical Clock Frequencies with
Program Running in the On-Chip Memory (RAM)
Variable
a_(f) Programming time
b_(f) tvs1
c_(f) tvs2
d_(f) Erase time
Time
Setting
20 µs
4 µs
2 µs
10 ms
Clock Frequency
f = 16 MHz f = 10 MHz f = 8 MHz
f = 2 MHz
Counter
Counter
Counter
Counter
Setting Value Setting Value Setting Value Setting Value
H'0028
H'0019
H'0014
H'0005
H'0B
H'07
H'06
H'02
H'06
H'04
H'03
H'01
H'2710
H'186A
H'1388
H'04E2
Table 19.9 (2) #a, #b, #c, and #d Setting Values for Typical Clock Frequencies with
Program Running in the External Device
Variable
a_(f) Programming time
b_(f) tvs1
c_(f) tvs2
d_(f) Erase time
Time
Setting
20 µs
4 µs
2 µs
10 ms
Clock Frequency
f = 16 MHz f = 10 MHz f = 8 MHz
f = 2 MHz
Counter
Counter
Counter
Counter
Setting Value Setting Value Setting Value Setting Value
H'000D
H'0008
H'0006
H'0001
H'04
H'03
H'02
H'01
H'02
H'02
H'01
H'01
H'0D05
H'0823
H'0682
H'01A0
410