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Part: HM6216255HI
Category:
Memory
-> SRAM
Description: 4m High Speed SRAM ( 256-kword X 16-bit )
Company: Hitachi Semiconductor (acquired by Renesas)
Datasheet: Download HM6216255HI datasheet File size : 256 kB
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Datasheet text preview:
HM6216255H Series
4M high Speed SRAM (256-kword × 16-bit)
ADE-203-763D (Z) Rev. 1.0 Sep. 15, 1998 Description
The HM6216255H Series is a 4-Mbit high speed static RAM organized 256-k word × 16-bit. It has realized high speed access time by employing CMOS process (4-transistor + 2-poly resistor memory cell) 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. It is packaged in 400-mil 44-pin plastic SOJ and 400-mil 44-pin plastic TSOPII.
Features
· Single 5.0 Vsupply : 5.0 V ± 10 % · Access time: 10/12/15 ns (max) · Completely static memory No clock or timing strobe required · Equal access and cycle times · Directly TTL compatible All inputs and outputs · Operating current: 200/180/160 mA (max) · TTL standby current: 70/60/50 mA (max) · CMOS standby current: 5 mA (max) : 1.2 mA (max) (L-version) · Data retansion current: 0.8 mA (max) (L-version) · Data retantion voltage: 2 V (min) (L-version) · Center VCC and VSS type pinout
HM6216255H Series
Ordering Information
Type No. HM6216255HJP-10 HM6216255HJP-12 HM6216255HJP-15 HM6216255HLJP-10 HM6216255HLJP-12 HM6216255HLJP-15 HM6216255HTT-10 HM6216255HTT-12 HM6216255HTT-15 HM6216255HLTT-10 HM6216255HLTT-12 HM6216255HLTT-15 Access time 10 ns 12 ns 15 ns 10 ns 12 ns 15 ns 10 ns 12 ns 15 ns 10 ns 12 ns 15 ns 400-mil 44-pin plastic TSOPII (TTP-44DE) Package 400-mil 44-pin plastic SOJ (CP-44D)
Pin Arrangement
HM6216255HJP/HLJP Series
A0 A1 A2 A3 A4 CS I/O1 I/O2 I/O3 I/O4 VCC VSS I/O5 I/O6 I/O7 I/O8 WE A5 A6 A7 A8 A9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A17 A16 A15 OE UB LB I/O16 I/O15 I/O14 I/O13 VSS VCC I/O12 I/O11 I/O10 I/O9 NC A14 A13 A12 A11 A10
HM6216255HTT/HLTT Series
A0 A1 A2 A3 A4 CS I/O1 I/O2 I/O3 I/O4 VCC VSS I/O5 I/O6 I/O7 I/O8 WE A5 A6 A7 A8 A9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A17 A16 A15 OE UB LB I/O16 I/O15 I/O14 I/O13 VSS VCC I/O12 I/O11 I/O10 I/O9 NC A14 A13 A12 A11 A10
(Top View)
(Top View)
2
HM6216255H Series
Pin Description
Pin name A0 to A17 I/O1 to I/O16 CS OE WE Function Address input Data input/output Chip select Output enable Write enable Pin name UB LB VCC VSS NC Function Upper byte select Lower byte select Power supply Ground No connection
Block Diagram
A1 A17 A7 A11 A16 A2 A6 A5 (MSB) (LSB)
Row decoder
Memory matrix 256 rows × 8 columns × 128 blocks × 16 bit (4,194,304 bits)
Internal voltage VCC generater VSS
CS I/O.1 . . I/O8 I/O.9 . . I/O16 WE CS LB UB Column I/O Input data control Column decoder CS
A10 A8 A9 A12 A13 A14 A0 A15 A3 A4
OE
CS
3
Others parts begin by hm
HM-1 HM-2 HM-3 HM-4 HM-5 HM-6 HM-7 HM-8 HM-9 HM-10 HM-11 HM-12 HM-13
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