UPD431000A-xxx NEC, UPD431000A-xxx Datasheet - Page 7

• Manufacturer Part Number: UPD431000A-xxx
• Description: 1M-BIT CMOS STATIC RAM 128K-WORD BY 8-BIT
• Manufacturer: NEC

Block Diagram
Truth Table
Remark
/CE1
GND
/CE1
I/O1
I/O8
CE2
/WE
H
L
L
L
/OE
V
CC
A16
A0
: V
IH
CE2
or V
H
H
H
L
IL
/OE
H
L
Address
buffer
/WE
H
H
L
Data Sheet M11657EJBV0DS
decoder
Output disable
Row
Input data
Not selected
controller
Mode
Read
Write
High impedance
Memory cell array
Sense amplifier /
Switching circuit
Column decoder
Address buffer
1,048,576 bits
D
I/O
D
OUT
IN
Supply current
I
I
CCA
SB
PD431000A
Output data
controller
7