12.5.5 Internal High-Frequency Oscillator Control A
| Name: | OSCHFCTRLA |
| Offset: | 0x08 |
| Reset: | 0x0 |
| Property: | Configuration Change Protection |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| RUNSTDBY | AUTOTUNE[1:0] | ||||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 | ||||||
Bit 7 – RUNSTDBY Run in Standby
Enable the Internal High-Frequency Oscillator (OSCHF) to run in Standby sleep mode even if it is not requested by any peripheral.
Note:
- The requesting peripheral or the main clock must take the oscillator start-up time into account.
- The oscillator signal is available only if requested and becomes available after two OSCHF cycles.
| Value | Description |
|---|---|
| 0 | The OSCHF oscillator runs only when requested by a peripheral or by the main clock(1) |
| 1 | The OSCHF oscillator always runs in Active mode, Idle sleep mode, or Standby sleep mode(2) |
Bits 1:0 – AUTOTUNE[1:0] Automatic oscillator tune
| Value | Name | Description |
|---|---|---|
| 0 | OFF | The OSCHF auto-tune functionality is disabled |
| 1 | XOSC32K | The OSCHF auto-tune functionality against the XOSC32K clock source is enabled |
| Other | — | Reserved |