Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet

Product codes

ATSAMD21-XPRO

992

Atmel | SMART SAM D21 [DATASHEET]

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

- FLENC 9h to Fh are equal to -1 to -7 decimal instead of -7 to -1.

39.1.8 TCC

1 - The TCC interrupts FAULT1, FAULT0, FAULTB, FAULTA, DFS, ERR,and
CNT cannot wake up the chip from standby mode. Errata reference: 11951

Fix/Workaround:

Do not use the TCC interrupts FAULT1, FAULT0, FAULTB, FAULTA, DFS, ERR,
or CNT to wake up the chip from standby mode.

2 - If the OVF flag in the INTFLAG register is already set when enabling the
DMA, this will trigger an immediate DMA transfer and overwrite the current
buffered value in the TCC register. Errata reference: 12127

Fix/Workaround:

None

3 - With blanking enabled, a recoverable fault that occurs during the first
increment of a rising TCC is not blanked. Errata reference: 12519

Fix/Workaround:

None

4 - In Dual slope mode a Retrigger Event does not clear the TCC counter.
Errata reference: 12354

Fix/Workaround:

None

5 - In two ramp mode, two events will be generated per cycle, one on each
ramp’s end. EVCTRL.CNTSEL.END cannot be used to identify the end of a
double ramp cycle. Errata reference: 12224

Fix/Workaround:

None

6 - If an input event triggered STOP action is performed at the same time as
the counter overflows, the first pulse width of the subsequent counter start
can be altered with one prescaled clock cycle. Errata reference: 12107

Fix/Workaround:

None

7 - When the RUNSTDBY bit is written after the TCC is enabled, the
respective TCC APB bus is stalled and the RUNDSTBY bit in the TCC CTRLA
register is not enabled-protected. Errata reference: 12477

Fix/Workaround:

None.