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SparkFun COM-00540 Crystal 32kHz

SparkFun COM-00540 Crystal 32kHz
 SparkFun COM-00540 Crystal 32kHzSparkFun COM-00540 Crystal 32kHz 
Our Price:  £0.65(Inc. 20% VAT)(£0.54 Exc. VAT)

SKU:  PPCOM-00540
Part Number:  COM-00540
Brand:  SparkFun

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5 in stock, immediate despatch
Up to 358 More Available within 3-5 Working days
  (1 Review)

SparkFun COM-00540 Crystal 32kHz

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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