Datasheet Summary
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 pensated 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...