JVC NX-HD10 Service Manual page 34

NX-HD10
UPD442012AGYC70 (IC951) : 2M-bit cmos static ram
1. Pin layout
1
~
24
2. Block diagram
V
CC
GND
A0
A16
I/O1 - I/O8
I/O9 - I/O16
/CE1
CE2
/LB
/UB
/WE
/OE
1-34
48
~
25
Row
Address
decoder
buffer
Input data
controller
Memory cell array
2,097,152 bits
Sense amplifier/
Switching circuit
Column decoder
Address buffer
Output data
controller