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7.8.4
Memory Read Mode
(1) After the end of an auto-program, auto-erase, or status read operation, the command wait
state is entered. To read memory contents, a transition must be made to memory read mode
by means of a command write before the read is executed.
(2) Command writes can be performed in memory read mode, just as in the command wait state.
(3) Once memory read mode has been entered, consecutive reads can be performed.
(4) After power-on, memory read mode is entered.
Table 7.12 AC Characteristics in Memory Read Mode
= 5.0 V ±10%, V
(Conditions: V
CC
Item
Command write cycle
&(
hold time
&(
setup time
Data hold time
Data setup time
Write pulse width
:(
rise time
:(
fall time
ADDRESS
CE
OE
WE
DATA
Note: Data is latched on the rising edge of WE.
Figure 7.16 Memory Read Mode Timing Waveforms after Command Write
= 0 V, Ta = 25°C ±5°C)
SS
Symbol
t
nxtc
t
ceh
t
ces
t
dh
t
ds
t
wep
t
r
t
f
Command write
t
t
wep
ceh
t
ces
t
t
f
r
H'00
t
dh
t
ds
Min
Max
20
0
0
50
50
70
30
30
Memory read mode
ADDRESS STABLE
t
nxtc
Rev. 2.0, 11/00, page 157 of 1037
Unit
µs
ns
ns
ns
ns
ns
ns
ns
DATA
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