Datasheet > CYM1481ALPS-120C

CYM1481ALPS-120C

更新时间： 2024-01-26 07:34:29

品牌	Logo	应用领域
其他 - ETC		静态存储器
页数	文件大小	规格书
8页	179K
描述
x8 SRAM Module

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中文翻译

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数据手册

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CYM1481ALPS-120C 数据手册

1CYM1481A

CYM1481A

2048K x 8 SRAM Module

are constructed from four 512K x 8 SRAMs in plastic sur-

face-mount packages on an epoxy laminate board with pins.

On-board decoding selects one of the SRAMs from the

high-order address lines, keeping the remaining devices in

standby mode for minimum power consumption.

Features

• High-density 16-megabit SRAM modules

• High-speed CMOS SRAMs

— Access time of 70 ns

• Low active power

An active LOW write enable signal (WE) controls the writ-

ing/reading operation of the memory. When MS and WE inputs

are both LOW, data on the eight data input/output pins is writ-

ten into the memory location specified on the address pins.

Reading the device is accomplished by selecting the device

and enabling the outputs MS and OE active LOW while WE

remains inactive or HIGH. Under these conditions, the content

of the location addressed by the information on the address

pins is present on the eight data input/output pins.

— 605 mW (max.), 2M x 8

• Double-sided SMD technology

• TTL-compatible inputs and outputs

• Small footprint SIP

— PCB layout area of 0.72 sq. in.

• 2V data retention (L version)

Functional Description

The input/output pins remain in a high-impedance state unless

the module is selected, outputs are enabled, and write enable

(WE) is HIGH.

The CYM1481A is a high-performance 16-megabit static RAM

module organized as 2048K words by 8 bits. These modules

Logic Block Diagram

Pin Configuration

SIP

Top View

A –A

512K x 8

SRAM

I/O

–A

19 20

GND

I/O

512K x 8

SRAM

1 of 4

DECODER

512K x 8

SRAM

I/O

GND

512K x 8

SRAM

I/O

I/O –I/O

1481-1

Selection Guide

CYM1481A

Maximum Access Time (ns)

110

100

110

120

110

Maximum Operating Current (mA)

Maximum Standby Current (mA)

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

October 1990 - Revised April 16, 2001

12 3 4 5 6 7 8

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