Atmel SAM D20 Xplained Pro User Manual Download Page 11

 

Atmel SAM D20 Xplained Pro [USER GUIDE]

42102C-MCU-02/2014

11

Table 4-4. External 32.768kHz Crystal

Pin on SAM D20

Function

PA00

XIN32

PA01

XOUT32

4.2.2

Mechanical Buttons

SAM D20 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the

SAM D20 reset line and the other is a generic user configurable button. When a button is pressed it will drive

the I/O line to GND.

Table 4-5. Mechanical Buttons

Pin on SAM D20

Silkscreen text

RESETN

RESET

PA15

SW0

4.2.3

LED

There is one yellow LED available on the SAM D20 Xplained Pro board that can be turned on and off. The LED

can be activated by driving the connected I/O line to GND.

Table 4-6. LED connections

Pin on SAM D20

LED

PA14

Yellow LED0

4.3

Embedded Debugger Implementation

SAM D20 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug the

ATSAMD20J18A using Serial Wire Debug (SWD). The Embedded Debugger also include a Virtual Com port

interface over UART, an Atmel Data Gateway Interface over SPI and TWI and it monitors four of the SAM D20

GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.

4.3.1

Serial Wire Debug

The Serial Wire Debug (SWD) use two pins to communicate with the target. For further information on how to

use the programming and debugging capabilities of the EDBG, see 

“Embedded Debugger” on page 6

.

Table 4-7. SWD Connections

Pin on SAM D20

Function

PA30

SWD clock

PA31

SWD data

4.3.2

Virtual COM Port

The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMD20J18A UARTs.

For further information on how to use the Virtual COM port see 

“Embedded Debugger” on page 6

.

Table 4-8. Virtual COM Port Connections

Pin on SAM D20

Function

PA24

SERCOM3 PAD[2] UART TXD (SAM D20 TX line)

PA25

SERCOM3 PAD[3] UART RXD (SAM D20 RX line)

4.3.3

Atmel Data Gateway Interface

The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either a SPI or I²C port.

The DGI can be used to send a variety of data from the SAM D20 to the host PC. For further information on

how to use the DGI interface see 

“Embedded Debugger” on page 6

.

Table 4-9. DGI Interface Connections when using SPI

Pin on SAM D20

Function

PB31

SERCOM5 PAD[1] SPI SS (Slave select) (SAM D20 is Master)

Summary of Contents for SAM D20 Xplained Pro

Page 1: ...atform the kit provides easy access to the features of the Atmel ATSAMD20J18A and explains how to integrate the device in a custom design The Xplained Pro MCU series evaluation kits include an on boar...

Page 2: ...nectors 7 3 4 1 Xplained Pro Standard Extension Header 7 3 4 2 Xplained Pro Power Header 8 4 Hardware User Guide 9 4 1 Connectors 9 4 1 1 I O Extension Headers 9 4 2 Peripherals 10 4 2 1 Crystal 10 4...

Page 3: ...to target via SPI and TWI Four GPIOs connected to target for code instrumentation Digital I O Two mechanical buttons user and reset button One user LED Three extension headers Two possible power sour...

Page 4: ...Atmel SAM D20 Xplained Pro USER GUIDE 42102C MCU 02 2014 4 Figure 1 1 SAM D20 Xplained Pro Evaluation Kit Overview...

Page 5: ...all sized and easy to use evaluation kits for 8 and 32 bit Atmel microcontrollers It consists of a series of low cost MCU boards for evaluation and demonstration of features and capabilities of differ...

Page 6: ...lable interfaces and pinout Communication over the interfaces are bidirectional It can be used to send events and values from the ATSAMD20J18A or as a generic printf style data channel Traffic over th...

Page 7: ...o measure its power consumption Because the device has a separate power plane VCC_MCU_P3V3 on this board it is possible to measure the current consumption by measuring the current that is flowing into...

Page 8: ...ne of Serial peripheral interface Always implemented bus type 17 SPI_MISO Master in slave out line of Serial peripheral interface Always implemented bus type 18 SPI_SCK Clock for Serial peripheral int...

Page 9: ...aders have a pitch of 2 54 mm Table 4 1 Extension Header EXT1 Pin on EXT1 SAM D20 pin Function Shared functionality 1 Communication line to ID chip on extension board 2 GND 3 PB00 AIN 8 4 PB01 AIN 9 5...

Page 10: ...PIO Onboard SW0 7 PA12 TC2 WO 0 8 PA13 TC2 WO 1 9 PA28 EXTINT 8 10 PA27 GPIO 11 PA08 SERCOM2 PAD 0 I C SDA EXT1 EXT2 and EDBG 12 PA09 SERCOM2 PAD 1 I C SCL EXT1 EXT2 and EDBG 13 PB11 SERCOM4 PAD 3 UAR...

Page 11: ...and TWI and it monitors four of the SAM D20 GPIOs Atmel Studio can be used as a front end for the Embedded Debugger 4 3 1 Serial Wire Debug The Serial Wire Debug SWD use two pins to communicate with t...

Page 12: ...3 4 External Programming and Debugging The SAM D20 Xplained Pro features a Cortex Debug Connector 10 pin for programming and debugging an external target The connector is limited to the SWD interface...

Page 13: ...lained Pro has revision C of the SAMD20J18A device mounted Known issues VDDCORE decoupling capacitor The VDDCCORE output pin on SAMD20J18A has two decoupling capacitors one 100nF and one 4 7 F This mi...

Page 14: ...ision History Document revision Date Comment 42102C 02 2014 Updated Hardware Revision History and Known Issues on page 13 and Table 4 3 Extension Header EXT3 on page 10 42102B 10 2013 Updated Hardware...

Page 15: ...buyer s and further users sole risk The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies Atmel from all claims arising from the hand...

Page 16: ...BILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE...

Page 17: ...401 Building No 5 JiuGe Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Se...

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