AN-1121 A GPAK based Digital Clock

This application note describes how to make a digital clock based on 3 GPAKs (SLG46620V), an external crystal, four 7-segment displays and 60 LEDs to display seconds. It is capable of operating via an internal battery when the main power is lost, and shutting down the display for battery power savings. It also includes an internal every-hour buzzer which can be turned OFF.


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