control register 1
| VMCSEL | Voltage monitoring channel select |
| CCEIEN | Channel conversion end interrupt enable |
| VMORIEN | Voltage monitoring out of range interrupt enable |
| PCCEIEN | Conversion end interrupt enable for preempted channels |
| SQEN | Sequence mode enable |
| VMSGEN | Voltage monitoring enable on a single channel |
| PCAUTOEN | Preempted group automatic conversion enable after ordinary group |
| OCPEN | Partitioned mode enable on ordinary channels |
| PCPEN | Partitioned mode enable on preempted channels |
| OCPCNT | Partitioned mode conversion count of ordinary channels |
| PCVMEN | Voltage monitoring enable on preempted channels |
| OCVMEN | Voltage monitoring enable on ordinary channels |