| Integrated NV SRAM, real-time clock, crystal, power-fail control circuitry, and lithium energy cell Tracks BCD-coded seconds, minutes, hours, days, dates, months, years, and leap years, valid to year 2100 Clock and RAM registers accessed identically Century byte register Standard JEDEC bytewide 2k x 8 static RAM pin-out Low-battery warning Clock accuracy better than ±1 min/month at 25°C Voltages/power-fail tolerance: 3.3V ±10% and 5V ±10% Operating range: 0°C to 70°C >10 years operation without system power Freshness seal (lithium disconnected until first power-up) DIP module |