4 M SRAM (256-kword x 16-bit)
HM62V16258B Series
4 M SRAM (256-kword × 16-bit)
ADE-203-975B (Z) Rev. 2.0 Oct. 14, 1999
Description
The Hitachi HM62V...
Description
HM62V16258B Series
4 M SRAM (256-kword × 16-bit)
ADE-203-975B (Z) Rev. 2.0 Oct. 14, 1999
Description
The Hitachi HM62V16258B Series is 4-Mbit static RAM organized 262,144-word × 16-bit. HM62V16258B Series has realized higher density, higher performance and low power consumption by employing Hi-CMOS process technology. It offers low power standby power dissipation; therefore, it is suitable for battery backup systems. It is packaged in standard 44-pin plastic TSOPII.
Features
Single 3.0 V supply: 2.7 V to 3.6 V Fast access time: 70 ns/85 ns (max) Power dissipation: Active: 9 mW (typ) Standby: 3 µW (typ) Completely static memory. No clock or timing strobe required Equal access and cycle times Common data input and output. Three state output Battery backup operation.
HM62V16258B Series
Ordering Information
Type No. HM62V16258BLTT-7 HM62V16258BLTT-8 HM62V16258BLTT-7SL HM62V16258BLTT-8SL Access time 70 ns 85 ns 70 ns 85 ns Package 400-mil 44-pin plastic TSOPII (normal-bend type) (TTP-44DB)
2
HM62V16258B Series
Pin Arrangement
44-pin TSOP A4 A3 A2 A1 A0 CS I/O0 I/O1 I/O2 I/O3 VCC VSS I/O4 I/O5 I/O6 I/O7 WE A17 A16 A15 A14 A13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 (Top view) 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A5 A6 A7 OE UB LB I/O15 I/O14 I/O13 I/O12 VSS VCC I/O11 I/O10 I/O9 I/O8 NC A8 A9 A10 A11 A12
Pin Description
Pin name A0 to A17 I/O0 to I/O15 CS WE OE LB UB VCC VSS NC Function Address input Data in...
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