Microchip MCP79401-I/SN, Real Time Clock (RTC) Serial-I2C, 8-Pin SOIC

The MCP79401 general purpose I2CTM Compatible real-time clock/calendar (RTCC) is highly integrated with memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a time stamp to log power failures and digital trimming for accuracy.

VCC Min = 1.8V
Icc < 5 μA Typical Dynamic Current
VBAT Min = 1.3V
Ibat < 700nA Typical Timekeeping & SRAM Retention Current
VCC to VBAT (power lost)
VBAT to VCC (power restored)
Low Power Operation
VCC Min = 1.8V
Icc < 5 μA Typical Dynamic Current
Low Backup Power
VBAT Min = 1.3V
Ibat < 700nA Typical Timekeeping & SRAM Retention Current
Automatic Battery Switchover with Timestamp