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SAMD20G_14 Datasheet, PDF (465/676 Pages) ATMEL Corporation – SMART ARM-Based Microcontroller
1: The timer/counter is counting down (decrementing).
Writing a zero to this bit has no effect
Writing a one to this bit will make the counter count down.
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129L–SAM-D20_datasheet–09/2014
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