DS1603 PDF File ( Datasheet )

DS1603 Elapsed Time Counter Module www.dalsemi.com FEATURES § § § § Two 32 bit counters keep track of real time and elapsed time Counters keep track of seconds for over 125 years Battery powered counter counts seconds from the time battery is attached until VBAT is less than 2.5 volts VCC powered counter counts seconds while VCC is above 4.25 volts and retains the count in the absence of VCC under battery backup power Clear function resets selected counter to 0 Read, Write serial port affor