Datasheet > WCMA1016U4X-FF55

WCMA1016U4X-FF55

更新时间： 2024-02-19 14:19:04

品牌	Logo	应用领域
韦达 - WEIDA		/
页数	文件大小	规格书
11页	309K
描述
64K x 16 Static RAM

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技术参数
数据手册

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WCMA1016U4X-FF55 技术参数

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

WCMA1016U4X-FF55 数据手册

WCMA1016U4X

64K x 16 Static RAM

are placed in a high-impedance state when: deselected (CE

HIGH), outputs are disabled (OE HIGH), both Byte High En-

able and Byte Low Enable are disabled (BHE, BLE HIGH), or

during a write operation (CE LOW, and WE LOW).

Writing to the device is accomplished by taking Chip Enable

(CE) and Write Enable (WE) inputs LOW. If Byte Low Enable

(BLE) is LOW, then data from I/O pins (I/O₀through I/O₇), is

written into the location specified on the address pins (A₀

through A₁₅). If Byte High Enable (BHE) is LOW, then data

from I/O pins (I/O₈through I/O₁₅) is written into the location

specified on the address pins (A₀through A₁₅).

Reading from the device is accomplished by taking Chip En-

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

Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then

data from the memory location specified by the address pins

will appear on I/O₀to I/O₇. If Byte High Enable (BHE) is LOW,

then data from memory will appear on I/O₈to I/O₁₅. See the

Truth Table at the back of this data sheet for a complete de-

scription of read and write modes.

and BHE are HIGH). The input/output pins (I/O₀through I/O₁₅

)

Features

• High Speed

— 55ns and 70ns availability

• Low voltage range

— 2.7V−3.6V

• Ultra-low active power

• Low standby power

• Easy memory expansion with CE and OE features

• Automatic power-down when deselected

• CMOS for optimum speed/power

Functional Description

The WCMA1016U4X is a high-performance CMOS static

RAM organized as 64K words by 16 bits. This device features

advanced circuit design to provide ultra-low active current.

This device s ideal for portable applications such as cellular

telephones. The device also has an automatic power-down

feature that significantly reduces power consumption by 99%

when addresses are not toggling. The device can also be put

into standby mode when deselected (CE HIGH or both BLE

The WCMA1016U4X is available in a 48-ball FBGA package.

Logic Block Diagram

DATA IN DRIVERS

A₁₀

A₉

A₈

A₇

A₆

A₅

A₄

A₃

A₂

A₁

A₀

64K x 16

RAM Array

2048 X 512

I/O₀–I/O₇

I/O₈–I/O₁₅

COLUMN DECODER

BHE

BLE

Power -Down

Circuit

BHE

BLE

12 3 4 5 6 7...11

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