HM621664HB

HM621664HB Series 1 M High Speed SRAM (64-kword × 16-bit) ADE-203-349B(Z) Rev. 2.0 Nov. 1997 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) Completely static memory  No clock or timing strobe required Equal access and cycle times Directly TTL compatible  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 20 A12 21 NC 22 44 A5 43 A6 42 A7 41 OE 40 UB 39 LB 38 I/O16 37 I/O15 36 I/O14 35 I/O13 34 VSS 33 VCC 32 I/O12 31 I/O11 30 I/O10 29 I/O9 28 NC 27 A8 26 A9 25 A10 24 A11 23 NC (Top View) Pin Description Pin name A0 – A15 I/O1 – I/O16 CS OE WE UB LB VCC VSS NC Functio...