DS1642 Overview
The nonvolatile time keeping RAM is pin and function equivalent to any JEDEC-standard 2k x 8 SRAM. The device can also be easily substituted in ROM, EPROM, and EEPROM sockets, providing read/write nonvolatility and the addition of the real-time clock function. The real-time clock information resides in the eight uppermost RAM locations.
DS1642 Key Features
- Integrated NV SRAM, Real-Time Clock
- Standard JEDEC Bytewide 2k x 8 Static
- Access Times of 85ns and 100ns
- Quartz Accuracy ±1 Minute a Month at
- BCD-Coded Year, Month, Date, Day, Hours
- Lithium Energy Source is Electrically
- UL Recognized