Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Hoja De Datos

187

Atmel | SMART SAM D20 [DATASHEET]

Atmel-42129K–SAM-D20_datasheet–06/2014

CONFIG

0x1

N/A - Loaded from NVM User Row at startup 

Write-Protected, Enable-Protected, Write-Synchronized

z

Bits 7:4 – WINDOW[3:0]: Window Mode Time-Out Period
In window mode, these bits determine the watchdog closed window period as a number of oscillator cycles. The 
closed window periods are defined in 

. 

These bits are loaded from NVM User Row at startup. Refer to 

 for more details.

z

Bits 3:0 – PER[3:0]: Time-Out Period
These bits determine the watchdog time-out period as a number of GCLK_WDT clock cycles. In window mode 
operation, these bits define the open window period. The different typical time-out periods are found in 

. 

These bits are loaded from NVM User Row at startup. Refer to 

 for more details.

Bit

7

6

5

4

3

2

1

0

Access

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Reset

X

X

X

X

X

X

X

X

0x0

8 clock cycles

0x1

16 clock cycles

0x2

32 clock cycles

0x3

64 clock cycles

0x4

128 clock cycles

0x5

256 clocks cycles

0x6

512 clocks cycles

0x7

1024 clock cycles

0x8

2048 clock cycles

0x9

4096 clock cycles

0xA

8192 clock cycles

0xB

16384 clock cycles

0xC-0xF

Reserved