MCP79411

MCP79410/MCP79411/MCP79412 Battery-Backed I2C™ Real-Time Clock/Calendar with SRAM, EEPROM and Protected EEPROM Device Selection Table Part Number MCP79410 MCP79411 MCP79412 Protected EEPROM Unprogrammed EUI-48™ EUI-64™ Operating Ranges: 2-Wire Serial Interface, I2C™ Compatible - I2C clock rate up to 400 kHz Temperature Range: - Industrial (I): -40°C to +85°C 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 Packages: 8-Lead SOIC, MSOP, TSSOP and 2x3 TDFN General Description: 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 to assert on an alarm match, to output a selectable frequency square wave, or as a general purpose output. The MCP7941X is designed to operate using a 32.768 kHz tuning fork crys...