44.7.13 Interrupt Flag Status and Clear

Note: Interrupt flags must be cleared and then read back to confirm they are cleared before exiting the ISR to avoid double interrupts.
Table 44-22. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: INTFLAG
Offset: 0x2C
Reset: 0x00000000
Property: -

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
 MC7MC6MC5MC4MC3MC2MC1MC0 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 15141312111098 
 FAULT1FAULT0FAULTBFAULTADFSUFS   
Access R/WR/WR/WR/WR/WR/W 
Reset 000000 
Bit 76543210 
     ERRCNTTRGOVF 
Access R/WR/WR/WR/W 
Reset 0000 

Bits 16, 17, 18, 19, 20, 21, 22, 23 – MCy Match or Capture Channel y Interrupt Flag

This flag is set and resynchronized on the APB clock after a match with the compare condition or once CCy register contain a valid capture value.

Writing a '0' to one of these bits has no effect.

Writing a '1' to one of these bits will clear the corresponding Match or Capture Channel y interrupt flag

In Capture operation, this flag is automatically cleared when CCy register is read.

Bit 15 – FAULT1 Non-Recoverable Fault 1 Interrupt Flag

This flag is set and resynchronized on the APB clock after a Non-Recoverable Fault 1 occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Non-Recoverable Fault 1 interrupt flag.

Bit 14 – FAULT0 Non-Recoverable Fault 0 Interrupt Flag

This flag is set and resynchronized on the APB clock after a Non-Recoverable Fault 0 occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Non-Recoverable Fault 0 interrupt flag.

ValueDescription
0The Non-Recoverable Fault y interrupt is disabled.
1The Non-Recoverable Fault y interrupt is enabled.

Bit 13 – FAULTB Recoverable Fault B Interrupt Flag

This flag is set and resynchronized on the APB clock after a Recoverable Fault B occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Recoverable Fault B interrupt flag.

Bit 12 – FAULTA Recoverable Fault A Interrupt Flag

This flag is set and resynchronized on the APB clock after a Recoverable Fault B occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Recoverable Fault B interrupt flag.

Bit 11 – DFS Non-Recoverable Debug Fault State Interrupt Flag

This flag is set and resynchronized on the APB clock after an Debug Fault State occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Debug Fault State interrupt flag.

Bit 10 – UFS Non-Recoverable Update Fault

This flag is set when the Ramp index changes and the Lock Update bit is set (CTRLBSET.LUPD(CTRLBSET<1>)).

Writing a zero to this bit has no effect.

Writing a one to this bit clears the Non-Recoverable Update Fault interrupt flag.

Note: This bit is only available on variant L devices. Refer to the Configuration Summary for more information.

Bit 3 – ERR Error Interrupt Flag

This flag is set if a new capture occurs on a channel when the corresponding Match or Capture Channel y interrupt flag is one. In which case there is nowhere to store the new capture.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the error interrupt flag.

Bit 2 – CNT Counter Interrupt Flag

This flag is set and resynchronized on the APB clock after a counter event occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the CNT interrupt flag.

Bit 1 – TRG Retrigger Interrupt Flag

This flag is set and resynchronized on the APB clock after a counter retrigger occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the re-trigger interrupt flag.

Bit 0 – OVF Overflow Interrupt Flag

This flag is set and resynchronized on the APB clock after an overflow condition occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Overflow interrupt flag.