HT1381A - Serial Timekeeper Chip
The HT1380A/HT1381A is a serial timekeeper IC which provides seconds, minutes, hours, day, date, month and year information.
The number of days in each month and leap years are automatically adjusted.
The HT1380A/HT1381A is designed for low power consumption and can operate in two modes: one is the
HT1381A Features
* Operating voltage: 2.0V~5.5V
* Maximum input serial clock: 500kHz at VDD=2V, 2MHz at VDD=5V
* Operating current:
* less than 0.5μA at 2V
* less than 0.7μA at 3V
* less than 1.0μA at 5V
* TTL compatible
