HM6208H

www.DataSheet4U.com HM6208H Series 65,536-word × 4-bit High Speed CMOS Static RAM Features Single 5 V supply and high density 24-pin package High speed: Access time 25/35/45 ns (max) Low power  Operation: 300 mW (typ)  Standby: 100 µW (typ) 30 µW (typ) (L-version) Completely static memory required  No clock or timing strobe required Equal access and cycle time Directly TTL compatible: All inputs and outputs Battery backup operation capability (L-version) Ordering Information Type No. HM6208HP-25 HM6208HP-35 HM6208HP-45 HM6208HLP-25 HM6208HLP-35 HM6208HLP-45 HM6208HJP-25 HM6208HJP-35 HM6208HJP-45 HM6208HLJP-25 HM6208HLJP-35 HM6208HLJP-45 Access Time 25 ns 35 ns 45 ns 25 ns 35 ns 45 ns 25 ns 35 ns 45 ns 25 ns 35 ns 45 ns 300-mil, 24-pin SOJ (CP-24D) Package 300-mil, 24-pin plastic DIP (DP-24NC) HM6208H Series Pin Arrangement A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 CS VSS 1 2 3 4 5 6 7 8 9 10 11 12 (Top view) 24 23 22 21 20 19 18 17 16 15 14 13 VCC A15 A14 A13 A12 A11 A10 I/O1 I/O2 I/O3 I/O4 WE Pin Description Pin Name A0–A15 I/O1–I/O4 CS WE VCC VSS Function Address lnput/output Chip select Write enable Power supply Ground 2 HM6208H Series Block Diagram A14 A15 A0 A1 A2 A3 A4 A5 I/O1 I/O2 I/O3 I/O4 A13 A12 A11 A10 A9 A8 A7 A6 Input data control VCC Row decoder Memory array 256 × 1024 VSS Column I/O Column decoder CS WE Truth Table CS H L L WE × H L Mode Not selected Read Write VCC Current I SB , I SB1 I CC I CC I/O Pin High-Z Dout Din Ref. Cycle — Read cycle Wr...