MCP7940M

MCP7940M Low-Cost 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 Low-Power Features: Wide Voltage Range: - Operating voltage range of 1.8V to 5.5V Low Typical Timekeeping Current: - Operating from VCC: 1.2 µA at 3.3V User Memory: 64-byte SRAM Operating Ranges: 2-Wire Serial Interface, I2C™ Compatible - I2C clock rate up to 400 kHz Temperature Range: - Industrial (I): -40°C to +85°C Packages: 8-Lead SOIC, MSOP, TSSOP, PDIP and 2x3 TDFN General Description: The MCP7940M Real-Time Clock/Calendar (RTCC) tracks time u...