Figure 5
Data Polling Waveform
WE1-4
CE1-4
OE
tDH
I/O7
tOEH
tOE
High Z
tWR
A
ADDRESS
AN
AN
AN
AN
AN
Figure 6
Page Mode Write Waveforms
OE
CEX
WEX
tAS
tWP
tAH
ADDRESS
Valid ADD
DATA
tDS
Valid DATA
Byte 0
tWPH
tDH
Byte 1
Byte 2
tBLC
Byte 3
tWC
Byte 127
Notes:
1. A7 through A16 must specify the sector address during each high to low transition of WE (or CE) after the software codes have been entered.
2. OE must be high when WE and CE are both low.
Aeroflex Circuit Technology
8
SCD1662 REV B 9/5/01 Plainview NY (516) 694-6700