HD64F3437TF16 Datasheet, PDF (563/752 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.

Auto-Program Mode
• AC Characteristics
Table 21.16 AC Characteristics in Auto-Program Mode
(Conditions: V_CC = 5.0 V ±10%, V_SS = 0 V, T_a = 25°C ±5°C)
Item
Command write cycle
CE hold time
CE setup time
Data hold time
Data setup time
Programming pulse width
Status polling start time
Status polling access time
Address setup time
Address hold time
Memory write time
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t _wsts
t _spa
t _as
t _ah
t _write
t_r
t_f
Min
20
0
0
50
50
70
1
0
60
1
Max
Unit
µs
ns
ns
ns
ns
ns
ms
150
ns
ns
ns
3000
ms
30
ns
30
ns
Notes
Address
CE
OE
WE
FO7
FO6
Data
Address stable
t_ces
t_ceh t_nxtc
t_nxtc
t_f
t_wep
t_r
t_ds
t_dh
H'40
t_as
t_ah
Data transfer
1 byte ... 128 bytes
t_wsts
t_spa
t_write
Programming operation
end identification signal
Programming normal
end identification signal
Data
Data
Programming wait
FO0 to FO5 = 0
Figure 21.20 Auto-Program Mode Timing Waveforms
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