Crystal 32.768kHz

Brand Sparkfun Model COM-00540 No rating write a review Share
Crystal 32.768kHz
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Out of Stock Delivered in 3 to 10 days In stock with supplier Expected shipping date: Friday 28 May.
Shipped from  € 25-United States


Standard 'Watch' or Real-Time-Clock crystal. 32.768kHz means it is precisely half of a 16-bit counter. Start counting at 0x8000 (or 32768). When the counter rolls over from 65535 to 0, then you know that exactly one second has passed. Reset the interrupt, reset the counter, and start counting again! Rated at 12.5pF load capacitance, 35K ohm max (18K ohm typical) series resistance, and +/- 20ppm stability. Small cylinder package.

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