Microchip Technology MCP79400-I/ST

Description
Low-power Real-Time Clock (RTC) with digital timing compensation for accurate timekeeping
Battery-backed SRAM memory for data storage
64-bit protected EEPROM for unique ID or MAC address
Automatic Vcc switchover to VBAT backup supply
Power-fail time-stamp for battery switchover
Low-power CMOS technology for extended battery life
100 kHz and 400 kHz compatibility
ESD protection >4,000V
1 million erase/write cycles for unique ID
Available in 8-lead SOIC, TSSOP, 2x3 TDFN, and MSOP packages
Pb-Free and RoHS Compliant
Temperature Ranges: Industrial (-40°C to 85°C)

Features
Real-Time Clock/Calendar (RTCC) with battery backup
Programmable output control for CLKOUT and alarm output
On-Chip Digital Trimming/Calibration with 1 ppm resolution
64 Bytes SRAM with battery backup
64-Bit Unique ID (EUI-48 or EUI-64)
Automatic Vcc Switchover to VBAT Backup Supply
Power-Fail Time-Stamp for Battery Switchover
Low-Power CMOS Technology
100 kHz and 400 kHz Compatibility
ESD Protection >4,000V
1 Million Erase/Write Cycles for Unique ID

Applications
Timekeeping and date tracking
Data logging and storage
Security and access control
Industrial automation and control
Medical devices
Consumer electronics