Microchip Technology SAMC21N Xplained Pro, Manual

Page: 23 / 41

Table 4-26. Crypto Authentication Device Connection
Pin on footprint SAMC21N pin Function Shared functionality
1 - NC -
2 - NC -
3 - NC -
4 - GND -
5 PA16 [SDA] SERCOM1 PAD[0] I
2
C
SDA
EXT2 , EXT3 , Shield ,
and EDBG I
2
C
6 PA17 [SCL] SERCOM1 PAD[1] I
2
C
SCL
EXT2 , EXT3 , Shield ,
and EDBG I
2
C
7 - NC -
8 - VCC_TARGET_P3V3 -
PADDLE - GND -
4.4 Kit Modifications
SAMC21N Xplained Pro has several resistors and jumpers that can be removed/cut to disconnect I/O
pins of the ATSAMC21N18A from connectors and on-board ICs and to disconnect/measure power to
different sections.
Table 4-27. Resistors
Designator From To Comment
R313 PA14 Arduino shield D3 Remove when using external crystal
R314 PA15 Arduino Shield D5
R609 RESETN RESET NET Remove to disconnect the RESETN pin
from the reset system
R607 PB11 RX CDC RX Remove to disconnect pins from the
EDBG level shifters
R610 RESET NET EDBG RESET
R611 PA31 SWDIO EDBG SWDIO
R612 PA30 SWCLK EDBG SWCLK
R614 PC12 MISO EDBG MISO
R618 PB12 EDBG GPIO0
R619 PA22 EDBG GPIO1
R620 PC24 EDBG GPIO2
R621 PA28 EDBG GPIO3
R800 RESETN Arduino shield RESET Remove to disconnect the reset system
from the Arduino shield connectors
SAMC21N Xplained Pro
©
2017 Microchip Technology Inc.
User Guide
DS70005318A-page 23