Техническая Спецификация для Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO

13

Atmel | SMART SAM D20 [DATASHEET]

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

2.

Only some pins can be used in SERCOM I

2

C mode. See the Type column for using a SERCOM pin in I

2

C mode. Refer to the 

 for details 

on the I

2

C pin characteristics

3.

Note that TC6 and TC7 are not supported on the SAM D20G. Refer to 

 for details.

4.

This function is only activated in the presence of a debugger

The oscillators are not mapped to the normal PORT functions and their multiplexing are controlled by registers in the 

System Controller (SYSCTRL).

 

Refer to 

 for more information.

After reset, SWCLK functionality is selected for pin PA30 to allow for debugger probe detection. The application software 
can switch the SWCLK functionality of PA30 to GPIO (or other peripherals) during runtime. PA31, by default, is config-
ured like other normal I/O pins and will automatically switch to SWDIO function when a debugger cold-plugging or hot-
plugging is detected. When the device is put in debug mode, application software accesses to PA30 and PA31 PORT 
registers are ignored.
Refer to 

 for more information.

XOSC

VDDIO

XIN

PA14

XOUT

PA15

XOSC32K

VDDANA

XIN32

PA00

XOUT32

PA01

SWCLK

VDDIO

PA30

SWDIO

VDDIO

PA31