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MCP7940N - Real-Time Clock/Calendar

Key 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 range.
  • Dual Programmable Alarms.
  • Versatile Output Pin: - Clock output with selectable frequency - Alarm output - General purpose output.
  • Power-Fail Time-Stamp: - Ti.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MCP7940N Battery-Backed I2C™ Real-Time Clock/Calendar with SRAM 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 range • 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.