Epson LQ 1050 Technical Manual - Page 207
A.1.5 Hm6264alsp-12 Cmos St-ram
View all Epson LQ 1050 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 207 highlights
REV.-A A.1.5 HM6264ALSP-12 CMOS ST-RAM This is a 8K-byte CMOS static RAM which has low power consumption, and its input/output level is compatible with the TTL ICS. Features q Capacity of 8192 words X 8 bits q 1/0 with ITL compatible q Power supply +5V DC q C'S access time . . . 120ns q 28 pins (DIP) Functions q AO - Al 2 Input address q WE q w Write enable Output enable . W, CS2 Chip select q DO - D7 Input/Output data q NC No connection NC 1 A12 2 A6 4 A5 5 A3 7 A2 8 Al 9 AO 10 DO 11 DI 12 D2 13 1 "Ii28 VOD 27 = 26 CS2 25 A8 24 A 9 2 0 6 4 23 All D22 G B21 AIO 20 WI D19 1)7 D18 D6 B17 05 16 D4 D15 D3 4 Figure A-1 2. HM6264ALSP-12 Pin Diagram j~a U-J ll_---l All 4 A12 DCsl cst.cs2 Cmlml CS2 Logic R o w Gala 7 a / 00 01 02 D3 04 05 D6 07 Figure A-1 3. HM6264ALSP-12 Block Diagram A-2 1