4 References
AVR054: Run-time Calibration of the Internal RC Oscillator
http://www.atmel.com/Images/doc2563.pdf
AVR055: Using a 32kHz XTAL for Run-time Calibration of the Internal RC
AVR054: Run-time Calibration of the Internal RC Oscillator
http://www.atmel.com/Images/doc2563.pdf
AVR055: Using a 32kHz XTAL for Run-time Calibration of the Internal RC
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.