The M48T58Y-70PC1 is a 8kb x 8 TIMEKEEPER? Non-volatile Static RAM and Real-time Clock. The RAM is a non-volatile pin and function equivalent to any JEDEC standard 8kb x 8 SRAM. It also easily fits into many ROM, EPROM and EEPROM sockets providing the non-volatility of PROMs without any requirement for special write timing or limitations on the number of write that can be performed. The 28-pin, 330mil SOIC provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT? housing containing the battery and crystal.
- Integrated ultralow power SRAM, real-time clock, power-fail control circuit and battery
- BYTEWIDE?RAM-like clock access
- BCD coded year, month, day, date, hours, minutes and seconds
- Frequency test output for real-time clock
- Automatic power-fail chip deselect and WRITE protection
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