30.11.12 Debouncer Prescaler

Table 30-13. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	DPRESCALER
Offset:	0x34
Reset:	0x00000000
Property:	RW


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16
								TICKON
Access								RW
Reset								0


Bit	15	14	13	12	11	10	9	8

Access
Reset


Bit	7	6	5	4	3	2	1	0
					STATES	PRESCALER[2:0]
Access					RW	RW	RW	RW
Reset					0	0	0	0

Bit 16 – TICKON Pin Sampler frequency selection

This bit selects the clock used for the sampling of bounce during transition detection.

Value	Name	Description
0	CLK_GCLK_EIC	Bounce sampler is using GCLK_EIC
1	CLK_LFREQ	Bounce sampler is using Low Frequency Clock

Bit 3 – STATES Debouncer number of states

Value	Name	Description
0	LFREQ3	3 low frequency samples
1	LFREQ7	7 low frequency samples

Bits 2:0 – PRESCALER[2:0] Debouncer Prescaler

Value	Name	Description
0	DIV2	EIC clock divided by 2
1	DIV4	EIC clock divided by 4
2	DIV8	EIC clock divided by 8
3	DIV16	EIC clock divided by 16
4	DIV32	EIC clock divided by 32
5	DIV64	EIC clock divided by 64
6	DIV128	EIC clock divided by 128
7	DIV256	EIC clock divided by 256

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.