Datasheet > WCMA1008C1X-GF70

WCMA1008C1X-GF70

更新时间： 2024-01-20 11:15:31

品牌	Logo	应用领域
韦达 - WEIDA		/
页数	文件大小	规格书
11页	208K
描述
128K x 8 Static RAM

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技术参数
数据手册

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WCMA1008C1X-GF70 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Is Samacsys：	N	Base Number Matches：	1

WCMA1008C1X-GF70 数据手册

WCMA1008C1X

128K x 8 Static RAM

(OE), and three-state drivers. This device has an automatic

power-down feature that reduces power consumption by more

than 75% when deselected.

Features

• Voltage Range

— 4.5V–5.5V

Writing to the device is accomplished by taking Chip Enable 1

(CE₁) and Write Enable (WE) inputs LOW and Chip Enable 2

(CE₂) input HIGH. Data on the eight I/O pins (I/O₀through

I/O₇) is then written into the location specified on the address

pins (A₀through A₁₆).

• Low active power

— Typical active current: 6 mA @ f = f_max(70 ns speed)

• Low standby current

• Automatic power-down when deselected

• TTL-compatible inputs and outputs

• Easy memory expansion with CE₁, CE₂, and OE fea-

tures

Reading from the device is accomplished by taking Chip En-

able 1 (CE₁) and Output Enable (OE) LOW while forcing Write

Enable (WE) and Chip Enable 2 (CE₂) HIGH. Under these

conditions, the contents of the memory location specified by

the address pins will appear on the I/O pins.

• CMOS for optimum speed/power

The eight input/output pins (I/O₀through I/O₇) are placed in a

high-impedance state when the device is deselected (CE₁

HIGH or CE₂LOW), the outputs are disabled (OE HIGH), or

during a write operation (CE₁LOW, CE₂HIGH, and WE LOW)

Functional Description

The WCMA1008C1X is a high-performance CMOS static

RAM organized as 128K words by 8 bits. Easy memory expan-

sion is provided by an active LOW Chip Enable (CE₁), an ac-

tive HIGH Chip Enable (CE₂), an active LOW Output Enable

The WCMA1008C1X is available in a standard 32-pin

450-mil-wide body width SOIC and 32-pin TSOP type I.

Logic Block Diagram

Configuration

Top View

SOIC

V_CC

A₁₅

A₁₈

A₁₇

A₁₆

I/O

INPUT BUFFER

A₁₄

A₁₂

A₇

A₆

I/O

A₁₃

A₈

A₅

A₉

I/O

A₄

A₃

A₂

512x256x8

ARRAY

A₁₁

A₁₀

I/O₇

I/O₆

I/O₅

A₁

A₀

I/O₀

I/O

I/O₁

I/O₂

GND

POWER

DOWN

COLUMN

DECODER

I/O₄

I/O₃

I/O

O₆

I/O

TSOP I

Top View

(not to scale)

GND

I/O

April 5, 2002

12 3 4 5 6 7...11

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