Renesas Electronics ISL1219IUZ, Real Time Clock, 16bit RAM Serial-I2C, 8-Pin HMSOP 10

The Renesas Electronics real time clocks devices are micro power real time clocks with timing and crystal compensation, clock/calender, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, and integrated in 16 bytes per page.

Single byte write capability
High reliability
Internal feedback resistor and compensation capacitors