Datasheet > WCMA4008C1X-GF70

WCMA4008C1X-GF70

更新时间： 2024-02-06 07:36:17

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
10页	176K
描述
512K x 8 Static RAM

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技术参数
数据手册

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WCMA4008C1X-GF70 技术参数

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

WCMA4008C1X-GF70 数据手册

WCMA4008C1X

512K x 8 Static RAM

LOW Output Enable (OE), and three-state drivers. This device

has an automatic power-down feature that reduces power

consumption by more than 99% when deselected.

Features

• Voltage Range

— 4.5V–5.5V

Writing to the device is accomplished by taking Chip Enable

(CE) and Write Enable (WE) inputs LOW. Data on the eight I/O

pins (I/O₀through I/O₇) is then written into the location speci-

fied on the address pins (A₀through A₁₈).

• Low active power

— Typical active current: 2.5 mA @ f = 1 MHz

— Typical active current: 12.5 mA @ f = f_max

• Low standby current

• Automatic power-down when deselected

• TTL-compatible inputs and outputs

• Easy memory expansion with CE and OE features

• CMOS for optimum speed/power

Reading from the device is accomplished by taking Chip En-

able (CE) and Output Enable (OE) LOW while forcing Write

Enable (WE) HIGH for read. Under these conditions, the con-

tents of the memory location specified by the address pins will

appear on the I/O pins.

The eight input/output pins (I/O₀through I/O₇) 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 WCMA4008C1X is a high-performance CMOS static

RAM organized as 512K words by 8 bits. Easy memory expan-

sion is provided by an active LOW Chip Enable (CE), an active

The WCMA4008C1X is available in a standard 32-pin

450-mil-wide body width SOIC.

Logic Block Diagram

Configuration

Top View

SOIC

V_CC

A₁₅

A₁₈

A₁₇

A₁₆

I/O

INPUT BUFFER

A₁₄

A₁₂

A₇

A₆

A₁₃

A₈

A₅

A₉

A₄

A₃

A₂

A₁₁

I/O

512 x 256 x 8

ARRAY

A₁₀

I/O₇

I/O₆

I/O₅

I/O₄

A₁

A₀

I/O₀

I/O₁

I/O₂

GND

POWER

DOWN

17 I/O₃

COLUMN

DECODER

I/O

12 3 4 5 6 7...10

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