Simtek STK1744
The Simtek STK1744 DIP module houses 256Kb of nonvolatile static RAM, a real-time clock (RTC) with crystal and a high-value capacitor to support systems that require high reliability and ease of manufacturing. The highest eight addresses of the RAM support clock registers for centuries, years, months, dates, days, hours, minutes and seconds.| Part No. | STK1744 |
|---|---|
| Datasheet | STK1744 Download |
| Manufacturer |  Simtek |
| Description | 32K x 8 AutoStore nvSRAM |
| Buy | Stock & Price |
FEATURES
● Data Integrity of Simtek nvSRAM Combined with Full-Featured Real-Time Clock● Stand-Alone Nonvolatile Memory and TimeKeeping Solution—No Other Parts Required
● No Batteries to Fail
● Fast 25ns, 35ns and 45ns Access Times
● Software- and AutoStore™-Controlled Nonvolatile Cycles
● Year 2000 Compliant with Leap Year Compensation
● 24-Hour BCD Format
● 100-Year Data Retention over Full Industrial Temperature Range
● Full 30-Day RTC Operation on Each Power Loss
● Single 5V ± 10% Power Supply
DESCRIPTION
PRELIMINARY READ and WRITE access to all RTC functions and the memory is the same as a conventional x 8 SRAM. Independent data resides in the integral Nonvolatile Elements at all times. Automatic RECALL on power up transfers the Nonvolatile Elements data to the SRAM, while an automatic STORE on power down transfers SRAM data to the Nonvolatile Elements. A software RECALL and STORE are also possible on user command. nvTime™ allows unlimited READ and WRITE accesses to SRAM, unlimited RECALLs and 106 STOREs.
