MCP79411 - Microchip

MCP79411 (MCP79410 - MCP79412) Real-Time Clock/Calendar

The MCP7941X Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7941X supports I2C communications up to 400 kHz. The open-drain, multi-functional output can be configured.

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 Packages:
• 8-Lead SOIC, MSOP, TSSOP and 2x3 TDFN General Description: The MCP7941X Real-Time Clo.