Table 51. Priority Grouping - ST STM32H7 Series Programming Manual

PM0214
bits you might require more explanation here, and want to remove invalid rows from the
table, and modify the entries in the number of columns.
PRIGROUP
[2:0]
0b0xx
0b100
0b101
0b110
0b111
1. PRI_n[7:4] field showing the binary point. x denotes a group priority field bit, and y denotes a subpriority
field bit.
Determining preemption of an exception uses only the group priority field, see
Interrupt priority grouping on page

Table 51. Priority grouping

Interrupt priority level value, PRI_N[7:4]
Binary Group priority
(1)
point bits
0bxxxx [7:4]
0bxxx.y [7:5]
0bxx.yy [7:6]
0bx.yyy [7]
0b.yyyy None
41.
PM0214 Rev 9
Subpriority Group
bits priorities
None 16
[4] 8
[5:4] 4
[6:4] 2
[7:4] None
Core peripherals
Number of
Sub
priorities
None
2
4
8
16
Section 2.3.6:
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