PIC16F628 Digital Clock Timer

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This clock timer uses a PIC16F628 microcontroller to display 3 and 1/2 digit time and control an external load. It can be programmed to time from 1 to 59 minutes. The clock includes a calendar with leap year and optional daylight savings adjustments. The timer output can be set from 1 to 59 minutes and manually switched on and off. The clock also has a correction feature that allows an additional second to be added every so many hours to compensate for a slightly slow running oscillator. The oscillator uses a common 32.768 KHz watch crystal and the frequency can be adjusted slightly with the 24pF capacitor on the right side of the crystal.

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http://ourworld.compuserve.com/homepages/Bill_Bowden/pic_ck.htm
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This entry was posted on Friday, February 1st, 2008 at 8:55 am and is filed under Timer, microcontroller. You can follow any responses to this entry through the RSS 2.0 feed.