HD64F3437TF16 Datasheet, PDF (561/752 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 21.14 AC Characteristics in Transition from Memory Read Mode to Another 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
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t_r
t_f
Min
20
0
0
50
50
70
Max
Unit Notes
µs
ns
ns
ns
ns
ns
30
ns
30
ns
Address
CE
OE
WE
Data
Memory read mode
Address stable
Other mode command write
t_nxtc
t_ces
t_ceh
Data
t_f
t_wep
t_r
t_ds
t_dh
H'XX
Note: Do not enable WE and OE simultaneously.
Figure 21.17 Timing Waveforms for Transition from Memory Read Mode
to Another Mode
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