Product Summary

The DS2045Y-100 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. Whenever VCC is applied to the module, the DS2045Y-100 recharges the ML battery, powers the SRAM from the external power source, and allows the contents of the SRAM to be modified. When VCC is powered down or out of tolerance, the controller write-protects the SRAM’s contents and powers the SRAM from the battery. Two versions of the DS2045Y-100 are available, which provide either a 5% or 10% power-monitoring trip point. The DS2045Y-100 also contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor.

Parametrics

DS2045Y-100 absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range: -40℃ to +85℃; (3)Storage Temperature Range: -40℃ to +85℃; (4)Soldering Temperature: See IPC/JEDEC J-STD-020.

Features

DS2045Y-100 features: (1)Single-Piece, Reflowable, 27mm2 PBGA Package Footprint; (2)Internal ML Battery and Charger; (3)Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance; (4)Automatically Switches to Battery Supply when VCC Power Failures Occur; (5)Internal Power-Supply Monitor Detects Power Fail at 5% or 10% Below Nominal VCC (5V); (6)Reset Output can be used as a CPU Supervisor for a Microprocessor; (7)Industrial Temperature Range (-40℃ to +85℃); (8)UL Recognized.

Diagrams

DS2045Y-100 Typical Operating Circuit

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS2045Y-100
DS2045Y-100

Maxim Integrated Products

NVRAM

Data Sheet

Negotiable 
DS2045Y-100#
DS2045Y-100#

Maxim Integrated Products

NVRAM

Data Sheet

Negotiable