MX23J12840
Operation Modes
Command input, address input, and serial read are all performed from I/O pins, and the respective statuses are
controlled by the CLE, ALE, WE, RE, and CE signals.
Command
input cycle
Address input cycle
Serial read cycle
CLE
CE
WE
ALE
RE
I/O0~
I/O7
RB
Busy
Operation mode
Mode
CLE
H
ALE
L
CE
L
WE
RE
H
Command input cycle
Address input cycle
Serial read cycle
L
H
L
H
L
L
L
H
Operation mode during serial read
Mode
CLE
ALE
CE
L
WE
H
RE
L
I/O0 - I/O7
Data output
Hi-Z
Data output
Output Hi-Z
Standby
L
L
L
L
L
L
L
H
H
x
H
H
Hi-Z
Remark ´ :VIH or VIL
P/N:PM1097
REV. 1.2, OCT. 28, 2005
4