HM62256BLFP-7SLT HITACHI [Hitachi Semiconductor], HM62256BLFP-7SLT Datasheet

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HM62256BLFP-7SLT

Manufacturer Part Number
HM62256BLFP-7SLT
Description
256k SRAM (32-kword x 8-bit)
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
Description
The Hitachi HM62256B Series is a CMOS static RAM organized 32,768-word
performance and low power consumption by employing 0.8
device, packaged in 8
print pitch width), 600 mil plastic DIP, or 300 mil plastic DIP, is available for high density mounting. It
offers low power standby power dissipation; therefore, it is suitable for battery backup systems.
Features
Single 5.0 V supply: 5.0 V 10%
Access time: 55 ns/70 ns/85 ns (max)
Power dissipation:
Completely static memory
Equal access and cycle times
Common data input and output
Directly TTL compatible all inputs and outputs
Battery backup operation
Active: 25 mW (typ) (f = 1 MHz)
Standby: 1.0 W (typ)
No clock or timing strobe required
Three state output
14 mm TSOP, 8
256k SRAM (32-kword
HM62256B Series
13.4 mm TSOP with thickness of 1.2 mm, 450 mil SOP (foot
m Hi-CMOS process technology. The
8-bit)
ADE-203-135F (Z)
8-bit. It realizes higher
Nov. 13, 1997
Rev. 6.0

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HM62256BLFP-7SLT Summary of contents

Page 1

... Single 5.0 V supply: 5.0 V 10% Access time: 55 ns/70 ns/85 ns (max) Power dissipation: Active (typ MHz) Standby: 1.0 W (typ) Completely static memory No clock or timing strobe required Equal access and cycle times Common data input and output Three state output Directly TTL compatible all inputs and outputs ...

Page 2

... HM62256B Series Ordering Information Type No. Access time HM62256BLP HM62256BLP-7SL 70 ns HM62256BLSP HM62256BLSP-7SL 70 ns HM62256BLFP- HM62256BLFP-5SLT 55 ns HM62256BLFP-7SLT 70 ns HM62256BLFP-7ULT 70 ns HM62256BLT HM62256BLT-7SL 70 ns HM62256BLTM HM62256BLTM-5SL 55 ns HM62256BLTM-7SL 70 ns HM62256BLTM-7UL 70 ns Pin Arrangement A14 A12 ...

Page 3

Pin Arrangement (cont A11 A13 A14 9 A12 A11 ...

Page 4

... A3 I/O0 • • • • • • • • • • I/O7 CS Timing Pulse Generator WE Read/Write Control OE 4 • Memory Matrix • Row 512 512 • Decoder Column I/O • • Input Column Decoder Data Control A10 A9 (LSB) • • • ...

Page 5

Operation Table Note Absolute Maximum Ratings Parameter Power supply voltage relative Terminal voltage on any pin relative ...

Page 6

HM62256B Series DC Characteristics ( + Parameter Symbol Min Input leakage current | Output leakage current | Operating current I CC Average HM62256B-5 I CC1 operating current HM62256B-7 I CC1 HM62256B-8 ...

Page 7

AC Characteristics ( + Test Conditions Input pulse levels: 0 2.4 V Input rise and fall time Input and output timing reference levels: 1.5 V Output load: 1 TTL Gate + ...

Page 8

HM62256B Series Write Cycle Parameter Write cycle time Chip selection to end of write Address setup time Address valid to end of write Write pulse width Write recovery time Write to output in high-Z Data to write time overlap Data ...

Page 9

Timing Waveform Read Timing Waveform (1) ( Address CS OE High impedance Dout Read Timing Waveform (2) ( Address t OH Dout ) Valid address ACS OLZ ...

Page 10

HM62256B Series Read Timing Waveform (3) ( CLZ High impedance Dout Write Timing Waveform (1) (OE Clock) Address Dout High impedance Din ...

Page 11

Write Timing Waveform (2) (OE Low Fixed) Address Dout High impedance Din t WC Valid address WHZ Valid data HM62256B Series t ...

Page 12

HM62256B Series Low V Data Retention Characteristics ( Parameter Symbol V for data retention Data retention current I CCDR I CCDR I CCDR Chip deselect to data t CDR retention time ...

Page 13

Package Dimensions HM62256BLP Series (DP-28) 35.6 36.5 Max 28 1 1.2 1.9 Max 2.54 0. 0.48 0.10 0 – 15 Hitachi Code JEDEC EIAJ Weight (reference value) HM62256B Series Unit: mm 15.24 + 0.11 0.25 – 0.05 DP-28 ...

Page 14

HM62256B Series Package Dimensions (cont.) HM62256BLSP Series (DP-28NA) 36.00 37.32 Max 28 1 1.30 2.20 Max 2.54 0. 0.48 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) Unit: mm 7.62 + 0.11 0.25 – 0.05 0 – ...

Page 15

... Package Dimensions (cont.) HM62256BLFP Series (FP-28DA) 18.00 18.75 Max 28 1 1.12 Max 1.27 0.40 0.08 0.38 0.06 Dimension including the plating thickness Base material dimension 15 14 11.80 1.00 0.15 0.20 M Hitachi Code JEDEC EIAJ Weight (reference value) HM62256B Series Unit: mm 0.30 1.70 0 – 8 0.20 FP-28DA Conforms Conforms 0. ...

Page 16

HM62256B Series Package Dimensions (cont.) HM62256BLT Series (TFP-32DA) 8.00 8.20 Max 0.50 0.22 0.08 0.08 M 0.20 0.06 0.45 Max 0.10 Dimension including the plating thickness Base material dimension 16 14.00 0.20 0 – 5 0.50 ...

Page 17

Package Dimensions (cont.) HM62256BLTM Series (TFP-28DA) 8.00 8.20 Max 0.55 0.22 0.05 0.10 M 0.20 0.04 0.63 Max 0.10 Dimension including the plating thickness Base material dimension HM62256B Series 13.40 0.30 0 – 5 ...

Page 18

HM62256B Series When using this document, keep the following in mind: 1. This document may, wholly or partially, be subject to change without notice. 2. All rights are reserved: No one is permitted to reproduce or duplicate, in any form, ...

Page 19

... Deletion of description; (only for L-version) 3.0 Jun. 19, 1995 Change of format Deletion of HM62256BLP-8/10/12/8SL/10SL/12SL Deletion of HM62256BLSP-8/10/12/8SL/10SL/12SL Deletion of HM62256BLFP-8T/10T/12T Deletion of HM62256BLFP-8SLT/10SLT/12SLT Deletion of HM62256BLT-10/12/8SL Deletion of HM62256BLTM-8SL Addition of HM62256BLFP-4SLT/5SLT/7ULT Addition of HM62256BLTM-4SLT/5SLT/7ULT Features Fast access time: 70/85/100/120 ns to 45/55/70/ Characteristics I typ: 33/29/26/ —/—/33/29 mA CC1 max: 60/50/50/ 70/60/60/ typ: 0 ...

Page 20

... Low V Data Retention Characteristics CC Addition of note 4. t typ: 0.2/0 0.05/0.05/0.05 A CCDR max: 30/ 30/10/3 A 4.0 Nov. 29, 1995 Ordering Information (HM62256BLFP-4 Series) Addition of note (Under development) AC Characteristics Test Conditions HM62256-5/7/8:1TTL Gate + C HM62256-5:1TTL Gate + C HM62256-7/8:1TTL Gate + C 5.0 Jul. 9, 1997 Change of format Deletion of HM62256B-4 Series 6 ...

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