DS1225Y

Voltage on Any Pin Relative to Ground ....................................0.3V to +7.0V
Operating Temperature ..............0°C to 70°C; 40°C to +85°C for IND parts
Storage Temperature ...........40°C to +70°C; 40°C to +85°C for IND parts
Soldering Temperature .................................................260°C for 10 seconds

* This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

The DS1225Y 64K Nonvolatile SRAM is a 65,536bit, fully static, nonvolatile RAM organized as 8192 words by 8 bits. Each NV SRAM has a selfcontained lithium energy source and control circuitry which constantly monitors VCC for an outoftolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. The NV SRAM can be used in place of existing 8K x 8 SRAMsdirectly conforming to the popular bytewide 28pin DIP standard. The DS1225Y also matches the pinout of the 2764 EPROM or the 2864 EEPROM, allowing direct substitution while enhancing performance. There is no limit on the number of write cycles that can be executed and no additional support circuitry is required for microprocessor interfacing.