www.
maxim-i c.
com DS1602 Elapsed Time Counter www.
maxim-ic.
com FEATURES § Two 32-bit counters keep track of real-time and elapsed time § Counters keep track of seconds for over 125 PIN ASSIGNMENT RST 1 DQ 2 8 VCC 7 X1 years § Battery powered counter counts seconds from the time battery is attached until VBAT is less than 2.
5V § VCC powered counter counts seconds while VCC is above VTP and retains the count in the absence of VCC under battery backup power § Clear function resets selected counter to 0 § Read/write serial port affords low pin count § Maximum current drain of less than 1 µA from VBAT pin when serial port is disabled § One byte protocol defines read/write, counter address...

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