DS2045Y

·RAID Systems and Servers
·POS Terminals
·Industrial Controllers
·Data-Acquisition Systems
·Gaming
·Fire Alarms
·Router/Switches
·PLC

Voltage on Any Pin Relative to Ground ...............-0.3V to +6.0V
Operating Temperature Range ......................-40°C to +85°C
Storage Temperature Range .........................-40°C to +85°C
Soldering Temperature...................See IPC/JEDEC J-STD-020C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The DS2045 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 V_CC is applied to the module, DS2045 recharges the ML battery, powers the SRAM from the external power source, and allows the contents of the SRAM to be modified.When V_CC 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 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.