Datasheet > 存储 > SRAM> CY62148L-70SI

CY62148L-70SI

更新时间： 2024-11-05 04:53:27

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
7页	189K
描述
512K x 8 Static RAM

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中文翻译

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数据手册

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CY62148L-70SI 数据手册

1CY62148

fax id: 1079

PRELIMINARY

CY62148

512K x 8 Static RAM

an automatic power-down feature that reduces power con-

sumption by more than 99% when deselected.

Features

• 4.5V−5.5V operation

• CMOS for optimum speed/power

• Low active power

Writing to the device is accomplished by taking chip enable

one (CE) and write enable (WE) inputs LOW. Data on the eight

I/O pins (I/O through I/O ) is then written into the location

specified on the address pins (A through A ).

— 660 mW (max.)

Reading from the device is accomplished by taking chip en-

able one (CE) and output enable (OE) LOW while forcing write

enable (WE). Under these conditions, the contents of the

memory location specified by the address pins will appear on

the I/O pins.

• Low standby power (L version)

— 2.75 mW (max.)

• Automatic power-down when deselected

• TTL-compatible inputs and outputs

• Easy memory expansion with CE and OE options

The eight input/output pins (I/O through I/O ) are placed in a

high-impedance state when the device is deselected (CE

HIGH), the outputs are disabled (OE HIGH), or during a write

operation (CE LOW, and WE LOW).

Functional Description

The CY62148 is a high-performance CMOS static RAM orga-

nized as 524,288 words by 8 bits. Easy memory expansion is

provided by an active LOW chip enable (CE), an active LOW

output enable (OE), and three-state drivers. This device has

The CY62148 is available in a standard 450-mil-wide body

width SOIC package.

Logic Block Diagram

Pin Configuration

Top View

SOIC

I/O

INPUT BUFFER

I/O

512K x 8

ARRAY

I/O

GND

I/O

A₉

I/O

POWER

DOWN

COLUMN

DECODER

I/O

62148-1

Selection Guide

CY62148–55

CY62148–70

Maximum Access Time (ns)

Maximum Operating Current

Maximum CMOS Standby Current

Commercial

120 mA

2 mA

120 mA

2 mA

0.5 mA

Shaded areas contain advance information

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

December 1996 - Revised July 31, 1997

12 3 4 5 6 7

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