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AN824

Title
Title
KEELOQ® Encoders Oscillator Calibration
Name
Name
AN824
Date
Date
06/24/2015
Description
Description
Several KEELOQ® Encoders of recent introduction, offer the ability to calibrate the internal RC clock oscillator, upon which all the device timings are based. At the time of writing this application note, there are five KEELOQ devices offering this feature: 1.HCS101-fixed code encoder; 2.HCS201-low cost hopping code encoder; 3.HCS362-advanced hopping code encoder; 4.HCS410-hopping code transcoder; 5.HCS412-hopping code transcoder; While the respective encoder data sheets show where the calibration value is stored in the device EEPROM, this application note will concentrate on how to determine the best calibration value.