Interrupt Priority Level 0
| Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| LVL0PRI[7:0] | |||||||
| AccessR/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W |
| Reset0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Interrupt Priority Level 0
When Round Robin is enabled (LVL0RR bit in CPUINT.CTRLA is '1'), this bit field stores the vector of the last acknowledged priority level 0 (LVL0) interrupt. The stored vector will have the lowest priority next time one or more LVL0 interrupts are pending.
If Round Robin is disabled (LVL0RR in CPUINT.CTRLA is '0'), the vector address-based priority scheme (lowest address has the highest priority) is governing the priorities of LVL0 interrupt requests.
If a system Reset is asserted, the lowest interrupt vector address will have the highest priority within the LVL0.