DS2045Y/AB Single-Piece 1Mb Nonvolatile SRAM
The DS2045 is a 1Mb reflowable nonvolatile (NV) SRAM consisting of a static RAM, an NV controller, and an internal rechargeable manganese lithium (ML) battery. Encased in a surface-mount module with a 256-ball BGA footprint, it recharges the battery and powers the SRAM when Vcc is applied. When Vcc is powered down or out of tolerance, the controller write-protects the SRAM's contents and powers it from the battery.
The device is available in two versions providing either a 5% or 10% power-monitoring trip point. It features an internal power-supply monitor output (RST) usable as a CPU supervisor for a microprocessor. Applications include RAID systems, servers, POS terminals, industrial controllers, data-acquisition systems, gaming fire alarms, routers, switches, and PLCs.
| Memory Capacity | 1Mb |
|---|---|
| Package Type | 256 Ball 27mm2 BGA Module |
| Operating Temperature Range | -40°C to +85°C |
| Read Cycle Time | 70ns to 100ns |
The DS2045AB provides a 5% power-monitoring trip point, while the DS2045Y provides a 10% power-monitoring trip point.
Yes, the DS2045 contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor.