The DS2045L 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, it 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. The DS2045L also contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor.
The DS2045L is a 1Mb reflowable nonvolatile (NV) SRAM that integrates a static RAM, an NV controller, and an internal rechargeable manganese lithium (ML) battery. Encased in a 256-ball BGA footprint, the device automatically switches to battery power when the external supply fails or goes out of tolerance, ensuring data retention. It also features a power-supply monitor output that can serve as a CPU supervisor for microprocessors.
| Memory Capacity | 1Mb |
|---|---|
| Supply Voltage | 3.3V |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 256 Ball 27mm2 BGA Module |
| Read Cycle Time | 100 ns |
| Access Time | 100 ns |
The controller write-protects the SRAM's contents and powers the SRAM from the internal battery.
Yes, the power-supply monitor output, RST, can be used as a CPU supervisor for a microprocessor.