The HT1380 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. Also, the HT1380 is designed for low power consumption and can operate in one of two formats: a 12-hour mode with an AM/PM indicator, or a 24-hour mode.

20090218_Holtek_ht1380.pdf

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