14.5.1 Control A
| Name: | CTRLA |
| Offset: | 0x00 |
| Reset: | 0x00 |
| Property: | Configuration Change Protection |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| IVSEL | CVT | LVL0RR | |||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 |
Bit 6 – IVSEL Interrupt Vector Select
When the entire Flash is configured as a BOOT section, this bit will be ignored.
Note:
- A system reset will cause the Program Counter to be reset to 0x0000, regardless of the IVSEL bit value.
| Value | Description |
|---|---|
| 0 | The expected location of the interrupt vectors is directly after the BOOT section(1) |
| 1 | The expected location of the interrupt vectors is at the start of the BOOT section |
Bit 5 – CVT Compact Vector Table
| Value | Description |
|---|---|
| 0 | Compact Vector Table function is disabled |
| 1 | Compact Vector Table function is enabled |
Bit 0 – LVL0RR Round Robin Priority Enable
| Value | Description |
|---|---|
| 0 | Priority is fixed for priority level 0 interrupt requests: The lowest interrupt vector address has the highest priority. |
| 1 | The round robin priority scheme is enabled for priority level 0 interrupt requests |