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Manufacturer Part #


MCP79410 Series 5.5 V I2C™ Real-Time Clock/Calendar with EEPROM SRAM-TSSOP-8

Mfr. Name: Microchip
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Technical Attributes
Attributes Table
Interface: I2C
Non-Volatile Memory Size: 1kB
SRAM Size: 64b
Supply Voltage-Nom: 1.8V to 5.5V
Temperature Grade: Industrial
Package Style:  TSSOP-8
Mounting Method: Surface Mount
Features & Applications

The MCP79410-I/ST is a I2C Real-Time Clock/Calender highly integrated with features of EEPROM, SRAM, Unique ID and Battery Switchover, available in TSSOP-8 package.

The Real-Time Clocks uses digital timing compensation for an accurate clock/calendar and a a programmable output control for versatility.


  • Real-Time Clock/Calendar (RTCC), Battery Backed:
    • Hours, Minutes, Seconds, Day of Week, Day, Month and Year
    • Dual alarm with single output
  • On-Chip Digital Trimming/Calibration:
    • Range -127 to +127 ppm
    • Resolution 1 ppm
  • Programmable Open-Drain Output Control:
    • CLKOUT with 4 selectable frequencies
    • Alarm output
  • 64 Bytes SRAM, Battery Backed
  • 1 Kbits EEPROM (128x8):
    • 8 bytes/page
    • Block/sector write protection
    • Protect none, 1/4, 1/2 or all of array
  • Separate 64-Bit Unique ID:
    • User or factory programmable
    • Protected area
    • EUI-48™ or EUI-64™ MAC address
    • Custom ID programming
  • Automatic VCC Switchover to VBAT Backup Supply
  • Power-Fail Time-Stamp for Battery Switchover
  • Low-Power CMOS Technology:
    • Dynamic Current: 400 µA max read
    • Dynamic Current: 3mA max EEPROM write
    • Battery Backup Current: <700nA @ 1.8V
  • I2C 100 kHz and 400 kHz Compatibility
  • ESD Protection >4,000V
  • More than 1 Million Erase/Write Cycles
  • Pb-Free and RoHS Compliant
  • Temperature Ranges: Industrial (I): -40°C to +85°C
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