DS3070W datasheet, PDF - EEWORLD Datasheet

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DS3070W: Description3.3V Single-Piece 16Mb Nonvolatile SRAM with Clock; File Size226KB，18 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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DS3070W Overview

3.3V Single-Piece 16Mb Nonvolatile SRAM with Clock

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Rev 1; 10/06

3.3V Single-Piece 16Mb Nonvolatile SRAM

with Clock

General Description

The DS3070W consists of a static RAM, a nonvolatile

(NV) controller, a year 2000-compliant real-time clock

(RTC), and an internal rechargeable manganese lithium

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

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

Whenever V

is applied to the module, it recharges

the ML battery, powers the clock and SRAM from the

external power source, and allows the contents of the

clock registers or SRAM to be modified. When V

powered down or out-of-tolerance, the controller write-

protects the memory contents and powers the clock

and SRAM from the battery. The DS3070W also con-

tains a power-supply monitor output (RST), as well as a

user-programmable interrupt output (IRQ/FT).

Features

Single-Piece, Reflowable, 27mm x 27mm BGA

Package Footprint

Internal Manganese Lithium Battery and Charger

Integrated Real-Time Clock

Unconditionally Write-Protects the Clock and

SRAM when V

is Out-of-Tolerance

Automatically Switches to Battery Supply when

Power Failures Occur

Reset Output can be Used as a CPU Supervisor

Interrupt Output can be Used as a CPU Watchdog

Timer

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

UL Recognized

DS3070W

Applications

RAID Systems and Servers

POS Terminals

Industrial Controllers

Data-Acquisition Systems

Gaming

Fire Alarms

PLCs

Routers/Switches

Ordering Information

PART

DS3070W-100#

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

256-ball 27mm x 27mm BGA Module

SPEED

100ns

SUPPLY VOLTAGE

3.3V ±0.3V

#Denotes

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

Typical Operating Circuit

MICROPROCESSOR

OR DSP

DATA

DS3070W

8 BITS

DQ0–7

2048k x 8

NV SRAM

AND RTC

ADDRESS

21 BITS

A0–20

INT

IRQ/FT

RST

Pin Configuration appears at end of data sheet.

______________________________________________

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.

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