Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Fiche De Données

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Atmel | SMART SAM D21 [DATASHEET]

Atmel-42181C–SAM-D21_Datasheet–07/2014

Notes: 1. DMA request set on overflow, underflow or retrigger conditions.

2. Can perform capture or generate recoverable fault on an event input.
3. Can retrigger counter / control counter direction / stop the counter / decrement the counter / perform period 

and pulse width capture / generate non-recoverable fault on an event input.

4. Can retrigger counter / increment or decrement counter depending on direction / start the counter / incre-

ment or decrement counter based on direction / increment counter regardless of direction / generate non-
recoverable fault on an event input.

The TCC generates the following DMA requests:

z

Overflow (OVF): the request is set when an update condition (overflow, underflow or re-trigger) is detected. 

z

Compare Match or Capture (MCx): for a compare channel, the request is set on each compare match detection. 
For a capture channel, the request is set when valid data is present in CCx register, and cleared when CCx 
register is read.

The TCC has the following interrupt sources: 

z

Overflow/Underflow: OVF. This is an asynchronous interrupt and can be used to wake-up the device from any 
sleep mode.

z

Retrigger: TRG. This is an asynchronous interrupt and can be used to wake-up the device from any sleep mode.

Overflow / Underflow 

X

X

Cleared when PER/PERB, 
CCx/CCBx, PATT/PATTB
or WAVE/WAVEB register is 
written.

Channel Compare Match 
or Capture

X

X

X

For compare channel: 
Cleared when CCBx register 
is written.

For capture channel: 
Cleared when CCx register 
is read.

Retrigger

X

X

Count

X

X

Capture Overflow Error

X

Synchronization Ready

X

Debug Fault State

X

Recoverable Faults

X

Non-Recoverable Faults

X

TCCx Event 0 input

TCCx Event 1 input