12.5.8 Internal High-Frequency Oscillator Control A
| Name: | OSCHFCTRLA |
| Offset: | 0x08 |
| Reset: | 0x0C |
| Property: | Configuration Change Protection |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| RUNSTDBY | AUTOTUNE | ||||||||
| Access | R/W | R/W | |||||||
| Reset | 0 | 0 |
Bit 7 – RUNSTDBY Run Standby
This bit controls whether the Internal High-Frequency Oscillator (OSCHF) is always running or not.
Note:
- The requesting peripheral, or the main clock, must take the oscillator start-up time into account.
- The oscillator signal is only available if requested and will be available after two OSCHF cycles.
| Value | Description |
|---|---|
| 0 | The OSCHF oscillator will only run when requested by a peripheral or by the main clock (1) |
| 1 | The OSCHF oscillator will always run in Active mode, Idle sleep mode and Standby sleep mode (2) |
Bit 0 – AUTOTUNE Auto-Tune Enable
This bit controls whether the 32.768 kHz crystal auto-tune functionality of the Internal High-Frequency Oscillator (OSCHF) is enabled or not.
| Value | Name | Description |
|---|---|---|
| 0 | OFF | The auto-tune functionality of the OSCHF oscillator is disabled |
| 1 | XOSC32K | The auto-tune functionality of the OSCHF oscillator is enabled |
| other | - | Reserved |