HD64F3437TF16 Datasheet, PDF (565/752 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-Erase Mode
• AC Characteristics
Table 21.17 AC Characteristics in Auto-Erase 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
Memory erase time
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t _ests
t _spa
t _erase
t_r
t_f
Min
20
0
0
50
50
70
1
100
Max
Unit
µs
ns
ns
ns
ns
ns
ms
150
ns
40000 ms
30
ns
30
ns
Notes
Address
CE
OE
WE
FO7
FO6
Data
t_ces
t_ceh t_nxtc
t_nxtc
t_f
t_wep
t_r
t_ds
t_dh
CL_in
H'20
t_ests
t_spa
t_erase
(100 to 40000 ms)
Erase end
identification signal
DL_in
H'20
Erase normal end
confirmation signal
FO0 to FO5 = 0
Figure 21.21 Auto-Erase Mode Timing Waveforms
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