MCP7940M-I/SN SO-8 Real-Time Clock with SRAM

Surface mount (SO-8) real-time clock.
Real-Time Clock/Calendar (RTCC):

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