Calibration Section

ATtiny102/ATtiny104 have one calibration byte. The calibration byte contains the calibration data for the internal oscillator and resides in the calibration section. During reset, the calibration byte is automatically written into the OSCCAL register to ensure correct frequency of the calibrated internal oscillator.

Table 1. Calibration byte
Calibration byte Offset Address Configuration word data
High byte [BYTE1] Low byte [BYTE0]
OSCCAL 0x00 Reserved Oscillator calibration value
Reserved 0x01 ... 0x07 Reserved Reserved