HM621664HB Datasheet | Hitachi Semiconductor

Description The HM621664HB is an asynchronous high speed static RAM organized as 64-kword × 16-bit. It realize high speed access time (15/20 ns) with employing 0.8 µm CMOS process and high speed circuit designing technology. It is most appropriate for the application which requires high speed, high density memory and wide bit width configuration, such as cache and buffer memory in system. The HM621664HB is packaged in 400-mil 44-pin SOJ for high density surface mounting. Features - Single 5 V supply - Access time: 15/20 ns (max) - pletely static memory  No clock or timing strobe required - Equal access and cycle times - Directly TTL patible  All inputs and outputs - 400-mil 44-pin SOJ package - Center VCC and VSS type pinout Ordering Information Type No. HM621664HBJP-15 HM621664HBJP-20 HM621664HBLJP-15 HM621664HBLJP-20 Access time 15 ns 20 ns 15 ns 20 ns Package 400-mil 44-pin plastic SOJ (CP-44D) HM621664HB Series Pin Arrangement HM621664HBJP/HBLJP Series A4 1 A3 2 A2 3 A1 4 A0 5 CS 6 I/O1 7 I/O2 8 I/O3 9 I/O4 10 VCC VSS I/O5 11 12 13 I/O6 14 I/O7 15 I/O8 16 WE 17 A15 18 A14 19 A13...