the digital watch circuit

Published:2011/7/20 21:34:00 Author:Borg | Keyword: digital watch | From:SeekIC

The ICM7200 integrated circuit (produced by Intersil Corp.) connects with the screen in multi-channel method, the user can selectively display the H, M, S or the date. This CMOS chip contains a long binary counter, which splits the 32.768KHz crystal oscillator input signal into the 1s reference clock signal. The other counters generate the H, M and date. When the key of see the time is pressed for the first time, the watch will display the hour and minute; when it is pressed for the second time, the watch will display the date and the second will be displayed for the third time.



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