W24257
Timing Waveforms, continued
Write Cycle 1
T
W C
Address
T
W R
#OE
T
C W
#CS
T
A W
#WE
T
AS
T
O H Z
D
OUT
T
D W
D
IN
T
D H
T
WP
(1, 4)
Write Cycle 2
(OE = V
IL
Fixed)
T
WC
Address
T
C W
#CS
T
A W
#WE
T
A S
T
WP
T
W H Z
D
OUT
(1, 4)
T
O H
(2)
T
O W
(3)
T
W R
T
D W
D
IN
T
D H
Notes:
1. During this period, I/O pins are in the output state, so input signals of opposite phase to the outputs should not be applied.
2. The data output from D
OUT
are the same as the data written to D
IN
during the write cycle.
3. D
OUT
provides the read data for the next address.
4. Transition is measured
±500
mV from steady state with C
L
= 5 pF. This parameter is guaranteed but not 100% tested.
-6-
WINBOND [ WINBOND ]
