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SAMC21 Datenblatt(PDF) 19 Page - ATMEL Corporation

Teilenummer SAMC21
Bauteilbeschribung  SMART ARM-based Microcontrollers Xplained Pro
PDF  46 Pages
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Hersteller  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

SAMC21 Datenblatt(HTML) 19 Page - ATMEL Corporation

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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
SAM C21 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 VREFT 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.
Table 4-10. VREF Header
VREF header pin
Pin / Net
Function
1
VCC_AREF_P3V3_P5V0
Filtered kit target voltage
2
VCC_AREF_P3V3_P5V0
Filtered kit target voltage
3
PA04
SDADC voltage reference
4
PA03
ADC / DAC voltage reference
5
GND
Ground
6
GND
Ground
4.2.5.
DAC Header
SAM C21 Xplained Pro has a 2-pin header labeled DAC-OUT on the board that is connected to the DAC
output of the ATSAMC21J18A and ground.
Table 4-11. DAC Header
DAC header pin
Pin / Net
Function
Shared functionality
1
PA02
DAC0 output
EXT3
2
GND
Ground
4.2.6.
Current Measurement Header
An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of
the SAM C21 Xplained Pro. All power to the ATSAMC21J18A is routed through this header. To measure
the power consumption of the device remove the jumper and replace it with an ammeter.
Caution:  Removing the jumper from the pin-header while the kit is powered may cause the
ATSAMC21J18A to be powered through its I/O pins. This may cause permanent damage to the
device.
4.2.7.
Cortex Debug Connector
SAM C21 Xplained Pro has a 10-pin 50-mil Cortex
® Debug Connector that can be used to attach external
debuggers to the ATSAMC21J18A.
Atmel SAM C21 Xplained Pro [USER GUIDE]
Atmel-42460D-SAM-C21-Xplained-Pro_User Guide-08/2016
19



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