DS2045W Datasheet PDF | Maxim Integrated

Maxim Integrated DS2045W

The DS2045W is a 1Mb 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. When VCC is powered down or out of tolerance, the controller write-protects the SRAM’s contents and powers the SRAM from the battery.

Part No.	DS2045W
Datasheet	DS2045W Download
Manufacturer	Maxim Integrated
Description	Single-Piece 1M Nonvolatile SRAM
Buy	Stock & Price

FEATURES

♦ Single-Piece, Reflowable, PBGA Package Footprint ♦ Internal ML Battery and Charger ♦ Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance ♦ Automatically Switches to Battery Supply when VCC Power Failures Occur ♦ Internal Power-Supply Monitor Detects Power Fail Below Nominal VCC (3.3V) ♦ Reset Output can be used as a CPU Supervisor for a Microprocessor ♦ Industrial Temperature Range (-40°C to +85°C) ♦ UL Recognized 27mm2

GENERAL DESCRIPTION

DS2045W

APPLICATIONS

RAID Systems and Servers Industrial Controllers Gaming Router/Switches POS Terminals Data-Acquisition Systems Fire Alarms PLC Pin Configuration appears at end of data sheet. PART DS2045W-100 TEMP RANGE -40°C to +85°C PIN-PACKAGE 256 Ball 27mm2 BGA Module w 8051 MICROPROCESSOR w w P4.0 P3.6 P3.7 P1.0–7 P4.4 P2.0–7 P3.2 .D (CE0) (WR) (RD) t a S a 8 BITS e h t e U 4 .c m o Ordering Information SPEED (ns) 100 SUPPLY TOLERANCE (%) 3.3V ±0.3V Typical Operating Circuit CE WE OE AD0–AD7 DQ0–7 DS2045W 128k x 8 NV S...