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| NVIC_PriorityGroup | NVIC_IRQChannel PreemptionPriority | NVIC_IRQChannel SubPriority | 説明 |
| NVIC_PriorityGroup_0 | 0 | 0-15 | 0 bits for pre-emption priority 4 bits for subpriority |
| NVIC_PriorityGroup_1 | 0-1 | 0-7 | 1 bits for pre-emption priority 3 bits for subpriority |
| NVIC_PriorityGroup_2 | 0-3 | 0-3 | 2 bits for pre-emption priority 2 bits for subpriority |
| NVIC_PriorityGroup_3 | 0-7 | 0-1 | 3 bits for pre-emption priority 1 bits for subpriority |
| NVIC_PriorityGroup_4 | 0-15 | 0 | 4 bits for pre-emption priority 0 bits for subpriority |
