Datasheet > DS2045Y-70

DS2045Y-70

更新时间： 2024-11-24 09:56:15

品牌	Logo	应用领域
达拉斯 - DALLAS		内存集成电路静态存储器
页数	文件大小	规格书
12页	428K
描述
Single-Piece 1Mb Nonvolatile SRAM

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中文翻译

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数据手册

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DS2045Y-70 数据手册

Rev 2; 1/05

DS2045Y/AB Single-Piece 1Mb

Nonvolatile SRAM

General Description

Features

♦ Single-Piece, Reflowable, 27mm²PBGA Package

The DS2045 is a 1Mb reflowable nonvolatile (NV) SRAM,

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

troller, and an internal rechargeable manganese lithium

(ML) battery. These components are encased in a sur-

face-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

at 5% or 10% Below Nominal V (5V)

the controller write-protects the SRAM’s contents and

powers the SRAM from the battery. Two versions of the

DS2045 are available, which provide either a 5% or 10%

power-monitoring trip point. The DS2045 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 POS Terminals

Pin Configuration appears at end of data sheet.

Industrial Controllers

Gaming

Data-Acquisition Systems

Fire Alarms

Router/Switches

PLC

Ordering Information

SPEED (ns)

SUPPLY TOLERANCE (%)

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

100

DS2045AB-70

DS2045AB-100

DS2045Y-70

DS2045Y-100

256 Ball 27mm BGA Module

100

256 Ball 27mm BGA Module

Typical Operating Circuit

(CE0)

(WR)

(RD)

P4.0

P3.6

P3.7

DS2045

128k x 8

NV SRAM

AD0–AD7

8051

MICROPROCESSOR

8 BITS

DQ0–7

A0–7

P1.0–7

P4.4

A16

P2.0–7

8 BITS

A8–15

(INT0)

P3.2

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

中文翻译

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与DS2045Y-70相关器件

型号	品牌	获取价格	描述	数据表
DS2045Y-70#	MAXIM	获取价格	Non-Volatile SRAM Module, 128KX8, 70ns, CMOS, PBGA256, 27 X 27 MM, ROHS COMPLIANT, PLASTIC
DS2050W-100	MAXIM	获取价格	Non-Volatile SRAM Module, 512KX8, 100ns, CMOS, PBGA256, 27 X 27 MM, MODULE, BGA-256
DS2058	DALLAS	获取价格	Power Supply Support Circuit, Fixed, 4 Channel, CMOS, PDSO16,
DS2058	MAXIM	获取价格	Power Management Circuit, CMOS, PDSO16
DS2064	DALLAS	获取价格	8K x 8 Static RAM
DS2064-200	DALLAS	获取价格	8K x 8 Static RAM
DS2064S	ETC	获取价格	x8 SRAM
DS2064S-200	DALLAS	获取价格	8K x 8 Static RAM
DS2065W	MAXIM	获取价格	3.3V Single-Piece 8Mb Nonvolatile SRAM
DS2065W-100	MAXIM	获取价格	3.3V Single-Piece 8Mb Nonvolatile SRAM

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