Datasheet > DS2070W

DS2070W

更新时间： 2024-11-24 04:15:11

品牌	Logo	应用领域
美信 - MAXIM		静态存储器
页数	文件大小	规格书
12页	218K
描述
3.3V Single-Piece 16Mb Nonvolatile SRAM

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中文翻译

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数据手册

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DS2070W 数据手册

Rev 0; 8/06

3.3V Single-Piece 16Mb

Nonvolatile SRAM

General Description

Features

ꢀ Single-Piece, Reflowable, (27mm)²PBGA Package

The DS2070W is a 16Mb reflowable nonvolatile (NV)

SRAM, which consists of a static RAM (SRAM), an NV

controller, and an internal rechargeable manganese

lithium (ML) battery. These components are encased in

a surface-mount module with a 256-ball BGA footprint.

Footprint

ꢀ Internal ML Battery and Charger

ꢀ Unconditionally Write-Protects SRAM when V

is Out-of-Tolerance

Whenever V

is applied to the module, it recharges the

ꢀ Automatically Switches to Battery Supply when

Power Failures Occur

ML battery, powers the SRAM from the external power

source, and allows the contents of the SRAM to be mod-

ified. When V

is powered down or out-of-tolerance,

ꢀ Internal Power-Supply Monitor Detects Power Fail

Below Nominal V (3.3V)

the controller write-protects the SRAM’s contents and

powers the SRAM from the battery. The DS2070W also

contains a power-supply monitor output, RST, which can

be used as a CPU supervisor for a microprocessor.

ꢀ Reset Output can be Used as a CPU Supervisor

for a Microprocessor

ꢀ Industrial Temperature Range (-40 C to +85 C)

ꢀ UL Recognized

Applications

RAID Systems and Servers

Industrial Controllers

Data-Acquisition Systems

Gaming

POS Terminals

Routers/Switches

Fire Alarms

PLC

Pin Configuration appears at end of data sheet.

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

SPEED (ns)

SUPPLY TOLERANCE

DS2070W-100#

256 Ball (27mm) BGA Module

100

3.3V 0.3V

#Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements.

Typical Operating Circuit

(CE)

(WR)

(RD)

DS2070W

2048k x 8

NV SRAM

MICROPROCESSOR

OR DSP

8 BITS

DQ0–DQ7

DATA

21 BITS

ADDRESS

(INT)

A0–A20

RST

______________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...12

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