32.768 kHz Crystal Oscillator Control A
Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RUNSTDBY | CSUT[1:0] | SEL | LPMODE | ENABLE | |||
AccessR/W | R/W | R/W | R/W | R/W | R/W | ||
Reset0 | 0 | 0 | 0 | 0 | 0 |
Run Standby
1
’.Value | Description |
---|---|
0 | The XOSC32K oscillator will only run when requested by a peripheral or by the main clock, in Active and Idle sleep modes (1) |
1 | The XOSC32K oscillator will always run in Active, Idle, Standby and Power-Down sleep modes (2) |
Crystal Start-Up Time
0
’.1
’. Value | Name | Description |
---|---|---|
0x0 | 1K | 1k cycles |
0x1 | 16K | 16k cycles |
0x2 | 32K | 32k cycles |
0x3 | 64K | 64k cycles |
Source Select
This bit controls the source of the 32.768 kHz Crystal Oscillator (XOSC32K).
1
’. Value | Description |
---|---|
0 | External crystal the XTAL32K1 and XTAL32K2 pins |
1 | External clock on the XTAL32K1 pin |
Low-Power Mode
Value | Description |
---|---|
0 | The Low-Power mode is disabled |
1 | The Low-Power mode is enabled |
Enable
This bit controls whether the 32.768 kHz Crystal Oscillator (XOSC32K) is enabled or not.
Value | Description |
---|---|
0 | The XOSC32K oscillator is disabled |
1 | The XOSC32K oscillator is enabled and overrides normal port operation for the respective oscillator pins |