rc_temp_ctiv

uint8_t nrf_clock_lf_cfg_t::rc_temp_ctiv

Only for NRF_CLOCK_LF_SRC_RC: How often (in number of calibration intervals) the RC oscillator shall be calibrated if the temperature hasn't changed. 0: Always calibrate even if the temperature hasn't changed. 1: Invalid 2-33: Check the temperature and only calibrate if it has changed, however calibration will take place every rc_temp_ctiv intervals in any case.

Note

Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.

The application must ensure calibration at least once every 8 seconds to ensure +/-500 ppm clock stability. The recommended configuration for NRF_CLOCK_LF_SRC_RC is rc_ctiv=16 and rc_temp_ctiv=2. This will ensure calibration at least once every 8 seconds and for temperature changes of 0.5 degrees Celsius every 4 seconds. See the Product Specification for the device being used for more information.