30.5.1 Control A
| Name: | CTRLA |
| Offset: | 0x00 |
| Reset: | 0x00 |
| Property: | - |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| RUNSTBY | RESSEL | FREERUN | ENABLE | ||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 0 | 0 | 0 | 0 |
Bit 7 – RUNSTBY Run in Standby
This bit determines whether the ADC needs to run when the chip is in Standby sleep mode.
Bit 2 – RESSEL Resolution Selection
This bit selects the ADC resolution.
| Value | Description |
|---|---|
| 0 | Full 10-bit resolution. The 10-bit ADC results are accumulated or stored in the ADC Result (ADC.RES) register. |
| 1 | 8-bit resolution. The conversion results are truncated to eight bits (MSbs) before they are accumulated or stored in the ADC Result (ADC.RES) register. The two Least Significant bits (LSbs) are discarded. |
Bit 1 – FREERUN Free-Running
Writing a ‘1’ to this bit will enable the
Free-Running mode for the data acquisition. The first conversion is started by
writing the STCONV bit in ADC.COMMAND high. In the Free-Running mode, a new
conversion cycle is started immediately after or as soon as the previous
conversion cycle has completed. This is signaled by the RESRDY flag in
ADCn.INTFLAGS.
Bit 0 – ENABLE ADC Enable
| Value | Description |
|---|---|
| 0 | ADC is disabled |
| 1 | ADC is enabled |