MCP79401

MCP79400/MCP79401/MCP79402 Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM Device Selection Table Part Number MCP79400 MCP79401 MCP79402 Protected EEPROM Unprogrammed EUI-48™ EUI-64™ Timekeeping Features Real-Time Clock/Calendar (RTCC): - Hours, Minutes, Seconds, Day of Week, Day, Month, Year - Leap year compensated to 2399 - 12/24-hour modes Oscillator for 32.768 kHz Crystals: - Optimized for 6-9 pF crystals On-Chip Digital Trimming/Calibration: - ±1 ppm resolution - ±129 ppm Dual Programmable Alarms Versatile Output Pin: - Clock output with selectable frequency - Alarm output - General purpose output Power-Fail Time-Stamp: - Time logged on switchover to and from Battery mode Low-Power Features Wide Voltage Range: - Operating voltage range of 1.8V to 5.5V - Backup voltage range of 1.3V to 5.5V Low Typical Timekeeping Current: - Operating from VCC: 1.2 µA at 3.3V - Operating from battery backup: 925 nA at 3.0V ...