Microchip Technology SAMC21N Xplained Pro, Руководство пользователя

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Pin on
J801 SAMC21N pin Arduino pin
name
Function Shared functionality
8 PA03 AREF ADC/VREFA or DAC/
VREFB
9 PA16 D14/SDA SERCOM1 PAD[0] I
2
C
SDA
EXT2 , EXT3 , Crypto
Device , and EDBG I
2
C
10 PA17 D15/SCL SERCOM1 PAD[1] I
2
C
SCL
EXT2 , EXT3 , Crypto
Device , and EDBG I
2
C
Table 4-8. J800 - SPI
Pin on
J800 SAMC21N pin Arduino pin
name
Function Shared functionality
1 PC12 MISO SERCOM7 PAD[0] SPI MISO EXT3 , EDBG SPI , and
Shield
2 - 5V VCC_TARGET_P3V3_P5V0 -
3 PC11 SCK SERCOM7 PAD[3] SPI SCK EXT3 , EDBG SPI , and
Shield
4 PC14 MOSI SERCOM7 PAD[2] SPI MOSI EXT3 , EDBG SPI , and
Shield
5 RESETN RESET TARGET_RESET -
6 - GND GND -
4.2.3 VCC Selection Header
The SAMC21N Xplained Pro has a 3-pin header labeled VCC_SEL on the board. This header can be
used to select between 3.3V and 5.0V as the supply voltage for the ATSAMC21N18A, peripherals, and
extension headers by placing a jumper on pin 1-2 or pin 2-3. Selecting 5.0V will supply the kit directly
from the USB or an external 5.0V source. Selecting 3.3V will supply the kit from an on-board regulator.
Table 4-9. VCC_SEL Header
VCC_SEL header pin Function
1 VCC_P5V0
2 VCC_TARGET
3 VCC_P3V3
4.2.4 VREF Header
SAMC21N Xplained Pro has a 6-pin header labeled VREF on the board. This header can be used to
select / apply a voltage reference to the ADC, DAC, and SDADC. Jumpers can be used to tie SADC
VREF and ADC/DAC VREF to the kit target voltage from pin 1-3 and 2-4, or external voltages can be
applied across pin 3-5 and 4-6.
SAMC21N Xplained Pro
©
2017 Microchip Technology Inc.
User Guide
DS70005318A-page 18