Part Number : ISL12021
Function : Real Time Clock with On Chip Temp Compensation ±5ppm
Package : TSSOP 14 Pin
Maker : Intersil
Pinouts : 
Description :
The ISL12021 device is a low power real time clock with an embedded Temp sensor for oscillator compensation, clock/calendar, power fail, low battery monitor, brown out indicator, single periodic or polled alarms, intelligent battery backup switching and 128 bytes of battery-backed user SRAM.
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
• On-chip Oscillator Compensation Over the Operating Temp Range
- ±5ppm over -20°C to +70°C
• Day Light Saving Time
- Customer Programmable
• Separate FOUT pin
- 15 Selectable Frequency Outputs
Datasheet PDF Download : 
Others datasheet of same file : ISL-12021