UPD4664312-X Datasheet, PDF (5/36 Pages) NEC – 64M-BIT CMOS MOBILE SPECIFIED RAM 4M-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION

Block Diagram
VCC
VCCQ
GND
A0
A21
I/O0 to I/O7
I/O8 to I/O15
µPD4664312-X
Standby mode control
Refresh
control
Refresh
counter
Address
buffer
Row
decoder
Input data
controller
Memory cell array
67,108,864 bits
Sense amplifier /
Switching circuit
Column decoder
Address buffer
Output data
controller
/CS
MODE
/LB
/UB
/WE
/OE
Remark VCCQ is the input / output power supply for -BE75X.
Preliminary Data Sheet M15867EJ5V0DS
5