Datasheet

• Count (CNT) - refer also to description of EVCTRL.CNTSEL.
• Capture Overflow Error (ERR)
• Non-Recoverable Update Fault (UFS)
• Debug Fault State (DFS)
• Recoverable Faults (FAULTn)
• Non-recoverable Faults (FAULTx)
• Compare Match or Capture Channels (MCx)
These interrupts are asynchronous wake-up sources. See Sleep Mode Entry and Exit Table in PM/Sleep
Mode Controller section for details.
Each interrupt source has an interrupt flag associated with it. The interrupt flag in the Interrupt Flag Status
and Clear (INTFLAG) register is set when the interrupt condition occurs. Each interrupt can be
individually enabled by writing a '1' to the corresponding bit in the Interrupt Enable Set (INTENSET)
register, and disabled by writing a '1' to the corresponding bit in the Interrupt Enable Clear (INTENCLR)
register. An interrupt request is generated when the interrupt flag is set and the corresponding interrupt is
enabled. The interrupt request remains active until the interrupt flag is cleared, the interrupt is disabled, or
the TCC is reset. See 31.8.12 INTFLAG for details on how to clear interrupt flags. The TCC has one
common interrupt request line for all the interrupt sources. The user must read the INTFLAG register to
determine which interrupt condition is present.
Note: Interrupts must be globally enabled for interrupt requests to be generated. Refer to Nested Vector
Interrupt Controller for details.
Related Links
11.2 Nested Vector Interrupt Controller
16.6.2.8 Sleep Mode Controller
16.6.2.8.1 IDLE Mode
16.6.2.8.2 STANDBY Mode
31.6.4.3 Events
The TCC can generate the following output events:
• Overflow/Underflow (OVF)
• Trigger (TRG)
• Counter (CNT) For further details, refer to EVCTRL.CNTSEL description.
• Compare Match or Capture on compare/capture channels: MCx
Writing a '1' ('0') to an Event Output bit in the Event Control Register (EVCTRL.xxEO) enables (disables)
the corresponding output event. Refer also to EVSYS – Event System.
The TCC can take the following actions on a channel input event (MCx):
• Capture event
• Generate a recoverable or non-recoverable fault
The TCC can take the following actions on counter Event 1 (TCCx EV1):
• Counter re-trigger
• Counter direction control
• Stop the counter
• Decrement the counter on event
• Period and pulse width capture
SAM D21 Family
TCC – Timer/Counter for Control Applications
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 739