Epson LQ-510 - Page 204

APPENDIX
REV.-A
A. 1.1.4 HM65256BLSP (5A)
The HM65256BLSP is a 32K-word x 8-bit pseudo-static RAM (PSRAM) which features low power consump-
tion (because CMOS peripheral circuits are used) and high speed and capacity (because a single transistor
memory cell is used). The pin diagram of the HM65256BLSP is provided in Figure A-8, and a block diagram
in Figure A-9.
Figure A-8. HM65256BLSP Pin Diagram
1024 sens. amp.
Memory Array
I II I
I I
I II I
I I
I I
Figure A-9.
HM65256BLSP Block Diagram
I/O 1
l/O2
l/O3
I/O4
I/O 5
I/O6
I/O 7
I/O8
A-10
LQ-510