| Real-time clock (RTC) keeps track of hundredths of seconds, seconds, minutes, hours, days, date, months, and years with automatic leap-year compensation valid up to the year 2100 2M x 8 NV SRAM Watch function is transparent to RAM operation Automatic data protection during power loss Unlimited write-cycle endurance Surface-mountable BGA module construction Over 10 years of data retention in the absence of power Battery monitor checks remaining capacity daily +3.3V or +5V operation |