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A
to A
18
0
CE
OE
WE
Data
Note: Data is latched at the rising edge of WE.
Figure 17-22 Memory Read Mode Timing Waveforms after Command Write
Table 17-16 AC Characteristics when Entering Another Mode from Memory Read Mode
(Conditions: V
Item
Command write cycle
CE hold time
CE setup time
Data hold time
Data setup time
Write pulse width
WE rise time
WE fall time
Command write
t
t
wep
ceh
t
ces
t
t
f
r
H'00
t
dh
t
ds
= 3.3 V ±0.3 V, V
CC
Symbol
Min
t
20
nxtc
t
0
ceh
t
0
ces
t
50
dh
t
50
ds
t
70
wep
t
r
t
f
Memory read mode
Address stable
t
nxtc
= 25°C ±5°C)
= 0 V, T
SS
a
Max
Unit
µs
ns
ns
ns
ns
ns
30
ns
30
ns
Data
Notes
585
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