ATSAME54-XPRO - MICROCHIP TECHNOLOGY

SAM E54 Xplained Pro

SAM E54 Xplained Pro User's Guide

Preface

The SAM E54 Xplained Pro evaluation kit is a hardware platform to evaluate the ATSAME54P20A

microcontroller.

Supported by the integrated development platform Atmel Studio, the kit provides easy access to the

features of the ATSAME54P20A and explains how to integrate the device in a custom design.

The Xplained Pro MCU series evaluation kits include an on-board Embedded Debugger, and no external

tools are necessary to program or debug the ATSAME54P20A.

The Xplained Pro extension kits offers additional peripherals to extend the features of the board and ease

the development of custom designs.

Table of Contents

Preface............................................................................................................................ 1

1. Object of Declaration................................................................................................. 4

2. Introduction................................................................................................................5

2.1. Features....................................................................................................................................... 5

2.2. Kit Overview................................................................................................................................. 6

3. Getting Started.......................................................................................................... 7

3.1. Xplained Pro Quick Start.............................................................................................................. 7

3.2. Design Documentation and Relevant Links................................................................................. 7

4. Xplained Pro.............................................................................................................. 9

4.1. Embedded Debugger................................................................................................................... 9

4.2. Xplained Pro Analog Module (XAM)...........................................................................................10

4.2.1. Overview......................................................................................................................10

4.2.2. EDBG Interface............................................................................................................11

4.2.3. Sample Rate................................................................................................................ 11

4.2.4. Measurement Ranges and Accuracy...........................................................................11

4.3. Hardware Identification System..................................................................................................12

4.4. Power Sources........................................................................................................................... 12

4.5. Xplained Pro Headers and Connectors......................................................................................13

4.5.1. Xplained Pro Standard Extension Header...................................................................13

4.5.2. Xplained Pro Power Header........................................................................................ 14

5. Hardware User Guide..............................................................................................15

5.1. Power Distribution...................................................................................................................... 15

5.2. Connectors.................................................................................................................................15

5.2.1. Xplained Pro Standard Extension Headers................................................................. 16

5.2.2. SD/SDIO Card............................................................................................................. 19

5.2.3. PCC Camera Connector..............................................................................................19

5.2.4. Position Decoder......................................................................................................... 21

5.2.5. VBAT Backup Select....................................................................................................21

5.2.6. ADC/DAC Header........................................................................................................21

5.2.7. USB............................................................................................................................. 21

5.2.8. Cortex Debug Connector.............................................................................................22

5.2.9. Cortex Debug Connector with Trace........................................................................... 22

5.2.10. Current Measurement Header.....................................................................................23

5.3. Peripherals................................................................................................................................. 24

5.3.1. Crystals........................................................................................................................24

5.3.2. Mechanical Buttons..................................................................................................... 24

5.3.3. LED..............................................................................................................................25

5.3.4. QTouch Button.............................................................................................................25

5.3.5. Backup Super Capacitor..............................................................................................25

5.3.6. CAN............................................................................................................................. 26

SAM E54 Xplained Pro

5.3.7. Ethernet....................................................................................................................... 26

5.3.8. AT24MAC402.............................................................................................................. 27

5.3.9. ATECC508A................................................................................................................ 28

5.3.10. QSPI Flash.................................................................................................................. 28

5.3.11. I2S Signals................................................................................................................... 29

5.4. Embedded Debugger Implementation........................................................................................30

5.4.1. Serial Wire Debug........................................................................................................30

5.4.2. Virtual COM Port..........................................................................................................30

5.4.3. Data Gateway Interface...............................................................................................30

5.4.4. XAM Configuration.......................................................................................................31

5.5. Kit Modifications......................................................................................................................... 32

5.5.1. Enable PCC Header.................................................................................................... 36

5.5.2. Operation at Other Voltages........................................................................................ 37

5.6. Low-Power Mode....................................................................................................................... 38

6. Kit Specific Data...................................................................................................... 39

7. Appendix..................................................................................................................40

7.1. Getting Started with IAR.............................................................................................................40

7.2. Connecting External Debuggers to an Xplained Pro Board....................................................... 43

8. Hardware Revision History and Known Issues........................................................45

8.1. Identifying Product ID and Revision........................................................................................... 45

8.2. Revision 5...................................................................................................................................45

8.2.1. VBAT Pin..................................................................................................................... 45

8.3. Revision 4...................................................................................................................................45

8.3.1. VBAT Pin..................................................................................................................... 45

8.3.2. 32.768 KHz Crystal......................................................................................................46

9. Document Revision History..................................................................................... 47

The Microchip Web Site................................................................................................ 48

Customer Change Notification Service..........................................................................48

Customer Support......................................................................................................... 48

Microchip Devices Code Protection Feature................................................................. 48

Legal Notice...................................................................................................................49

Trademarks................................................................................................................... 49

Quality Management System Certified by DNV.............................................................50

Worldwide Sales and Service........................................................................................51

SAM E54 Xplained Pro

1. Object of Declaration

EU Declaration of Conformity for SAM E54 Xplained Pro

This declaration of conformity is issued by the manufacturer.

The development/evaluation tool is designed to be used for research and development in a laboratory

environment. This development/evaluation tool is not a Finished Appliance, nor is it intended for

incorporation into Finished Appliances that are made commercially available as single functional units to

end users under EU EMC Directive 2004/108/EC and as supported by the European Commission's Guide

for the EMC Directive 2004/108/EC (8th February 2010).

This development/evaluation tool complies with EU RoHS2 Directive 2011/65/EU.

This development/evaluation tool, when incorporating wireless and radio-telecom functionality, is in

compliance with the essential requirement and other relevant provisions of the R&TTE Directive

1999/5/EC and the FCC rules as stated in the declaration of conformity provided in the module datasheet

and the module product page available at www.microchip.com.

For information regarding the exclusive, limited warranties applicable to Microchip products, please see

Microchip’s standard terms and conditions of sale, which are printed on our sales documentation and

available at www.microchip.com.

Signed for and on behalf of Microchip Technology Inc. at Chandler, Arizona, USA.



SAM E54 Xplained Pro

2. Introduction

2.1 Features

• ATSAME54P20A microcontroller

• One mechanical reset button

• One mechanical programmable button

• One QTouch® PTC button

• One yellow user LED

• 256 Mb QSPI Flash

• ATECC508 CryptoAuthentication™ device

• AT24MAC402 serial EEPROM with EUI-48™ MAC address

• Ethernet

– RJ45 connector with built-in magnetics

– KSZ8091RNA PHY

– 10Base-T/100Base-TX IEE 802.3 compliant Ethernet transceiver

• SD/SDIO card connector

• Parallel Capture Controller header (ArduCAM compatible)

• CAN connector

• Backup super capacitor

• 32.768 kHz crystal

• 12 MHz crystal

• USB interface, host, and device

• Three Xplained Pro extension headers

• 10-pin Cortex® Debug Connector with SWD

• 20-pin Cortex Debug + ETM Connector with SWD and four bit trace

• Embedded Debugger

– Auto-ID for board identification in Atmel Studio

– One yellow status LED

– One green board power LED

– Symbolic debug of complex data types including scope information

– Programming and debugging, including power measurements

– Data Gateway Interface: SPI, I2C, four GPIOs

– Virtual COM port (CDC)

• Embedded current measurement circuitry (XAM)

– Measures power consumption of the ATSAME54P20A and / or peripherals

– Measures current between 100 nA and 400 mA

– Current measurement data shown in Microchip Data Visualizer

• USB powered

• Supported with application examples in Atmel START

SAM E54 Xplained Pro

2.2 Kit Overview

The SAM E54 Xplained Pro evaluation kit is a hardware platform to evaluate the ATSAME54P20A.

The kit offers a set of features that enables the ATSAME54P20A user to get started with the SAM E54

peripherals right away and to get an understanding of how to integrate the device in their own design.

Figure 2-1. SAM E54 Xplained Pro Evaluation Kit Overview

DEBUG USB

POWER HEADER

EXTENSION 1 HEADER

EXTENSION 2 HEADER

EXTENSION 3 HEADER

SAME5P20A

RESET BUTTON

CURRENT MEASUREMENT

HEADER

SW0 USER BUTTON

USER LED0

32kHz CRYSTAL

BACKUP SELECT

TARGET USB

BACKUP SUPER

CAPACITOR

QTOUCH BUTTON

MCU CURRENT

MEASUREMENT

SELECT JUMPER

I/O CURRENT

MEASUREMENT

SELECT JUMPER

10-PIN CORTEX DEBUG

CONNECTOR FOR

EXTERNAL DEBUGGER

ATECC508A

CRYPTO DEVICE

ADC/DAC HEADER

AT24MAC402

DEVICE

20-PIN CORTEX DEBUG +

ETM CONNECTOR

32Mbit QSPI FLASH

CAN HEADER

PARALLEL CAPTURE

CONTROLLER HEADER

RJ45 ETHERNET

CONNECTOR

POSITION DECODER

HEADER

SDCARD CONNECTOR

(BOTTOM)

12MHz CRYSTAL

KSZ8091

ETHERNET PHY

SAM E54 Xplained Pro

3. Getting Started

3.1 Xplained Pro Quick Start

Steps to start exploring the Xplained Pro platform:

1. Download and install Atmel Studio.

2. Launch Atmel Studio.

3. Connect the DEBUG USB port on the evaluation kit to the computer using a USB cable (Standard-

A to Micro-B or Micro-AB).

The operating system installs the driver software automatically the first time the Xplained Pro evaluation

kit is connected to a PC. This driver supports 32-bit and 64-bit versions of Microsoft® Windows® XP,

Windows Vista®, Windows 7, Windows 8, Windows 10, and Windows Server 2012.

When the Xplained Pro MCU board is powered, the power LED (green) glows and Atmel Studio

automatically detects the specific Xplained Pro MCU and extension board(s) that are connected. The kit

landing page in Atmel Studio comes with an option to launch Atmel Software Framework (ASF) and

Atmel START example application codes for the kit. The SAM E54 device is programmed and debugged

by the on-board Embedded Debugger and therefore no external programmer or debugger tool is

required.

3.2 Design Documentation and Relevant Links

The following list contains links to the most relevant documents and software for the SAM E54 Xplained

Pro.

•Xplained products - Xplained evaluation kits are a series of easy-to-use evaluation kits for

Microchip microcontrollers and other Microchip products.

– Xplained Nano: used for low pin-count devices and provides a minimalistic solution with

access to all I/O pins of the target microcontroller.

– Xplained Mini: used for medium pin-count devices and adds Arduino Uno compatible header

footprint and a prototyping area.

– Xplained Pro: used for medium to high pin-count devices that features advanced debugging

and standardized extensions for peripheral functions.

Note: All the above kits have on-board programmers/debuggers, which creates a set of low-cost

boards for evaluation and demonstration of features and capabilities of different Microchip products.

•Atmel Studio - Free IDE for the development of C/C++ and assembler code for microcontrollers.

•EDBG User Guide - User guide containing more information about the on-board Embedded

Debugger.

•IAR Embedded Workbench® for ARM® - This is a commercial C/C++ compiler that is available for

ARM®. There is a 30 day evaluation version as well as a code size limited kick-start version

available from their website. The code size limit is 16KB for devices with M0, M0+, and M1 cores

and 32KB for devices with other cores.

•QTouch® tools - A collection of tools to design capacitive touch applications.

•http://start.atmel.com/ - Atmel START is an online tool to help you select and configure software

components and tailor your embedded application in a usable and optimized manner.

SAM E54 Xplained Pro

•Data Visualizer - Data Visualizer is a program used for processing and visualizing data. The Data

Visualizer can receive data from various sources such as the Embedded Debugger Data Gateway

Interface found on Xplained Pro boards and COM Ports.

•SAM E54 Xplained Pro website - Kit information, latest user guide and design documentation.

•SAM E54 Xplained Pro on Microchip Direct - Purchase this kit on Microchip Direct.

SAM E54 Xplained Pro

4. Xplained Pro

Xplained Pro is an evaluation platform which contains a series of microcontroller boards (evaluation kits)

and extension boards. Atmel Studio is used to program and debug the microcontrollers on these boards.

Atmel Studio includes ASF and Atmel START, which has drivers and demo code, and Data Visualizer,

which supports data streaming and advanced debugging. Xplained Pro evaluation kits can be connected

to a wide range of Xplained Pro extension boards through standardized headers and connectors.

Xplained Pro extension boards have identification (ID) chips to uniquely identify which boards are

connected to the Xplained Pro evaluation kits.

4.1 Embedded Debugger

The SAM E54 Xplained Pro contains an Embedded Debugger (EDBG) for on-board debugging. The

EDBG is a USB composite device with the following interfaces:

• Debugger

• Virtual COM Port

• Data Gateway Interface (DGI)

The EDBG can program and debug the ATSAME54P20A with the help of Atmel Studio. The SWD

interface is connected between the EDBG and the ATSAME54P20A on the SAM E54 Xplained Pro.

The Virtual COM Port is connected to a UART on the ATSAME54P20A and provides an easy way to

communicate with the target application through terminal software. It offers variable baud rate, parity, and

stop bit settings. The settings on the ATSAME54P20A must match the settings given in the terminal

software.

Info: The Virtual COM Port in the EDBG requires the terminal software to set the Data

Terminal Ready (DTR) signal to enable the UART pins connected to the ATSAME54P20A. If the

DTR signal is not enabled, the UART pins on the EDBG are kept in tri-state (high-z) to render

the COM Port not usable. The DTR signal is automatically set by some terminal software, but it

may have to be manually enabled in your terminal.

The DGI consists of several physical interfaces for bidirectional communication with the host computer.

Communication over the interfaces is bidirectional. It can be used to send event values, and data from

the ATSAME54P20A. Traffic over the interfaces can be timestamped by the EDBG for more accurate

tracing of events, but timestamping reduces the maximal data throughput. The Data Visualizer is used to

send and receive data through DGI.

The EDBG controls two LEDs on the SAM E54 Xplained Pro: a power LED and a status LED. The table

below shows how the LEDs are controlled in different operation modes.

SAM E54 Xplained Pro

Table 4-1. EDBG LED Control

Mode Power LED Status LED

Normal mode The power LED is on when

power is applied to the board.

Activity indicator, the LED flashes

when any communication

happens to the EDBG.

Bootloader mode (idle) The power LED and the status LED blink simultaneously.

Bootloader mode (firmware

upgrade)

The power LED and the status LED blink in an alternating pattern.

For additional information on the EDBG, see the EDBG User Guide.

4.2 Xplained Pro Analog Module (XAM)

4.2.1 Overview

The Xplained Pro Analog Module (XAM) extends the embedded debugger with high dynamic range

current measurement. This enables power profiling of the target system.

Figure 4-1. XAM Block Diagram

ADC0

ADC1

20x

voltage

reference

2.7V

Control MCU

GND

S&H

ADC

Calibration

circuitry

Calibration ON/OFF

AREF

GPIO

GPIO(s)

GPIO

100 mOhm

100 Ohm

EDBG

SPI

Clock sync

SWD

Sync GPIO

I2C

16x

Current input

Current output

Range selection

Pre-amplifier

Active filter with

gain

Xplained Pro Analog Module (XAM)

20x

The XAM consists of:

• Calibration circuitry

• Voltage reference circuitry

• Analog front-end:

– Shunt resistors with a range selection switch

– Pre-amplifier

– Two active filters with gain

• Control MCU

SAM E54 Xplained Pro

– Analog-to-Digital Converter

– Signal processing

– Control/communication interface to the EDBG

The current measurement front-end is a high side shunt measurement with a pre-amplifier and a second

active filter stage with gain as shown in Figure 4-1. The wide dynamic range is achieved by four

measurement ranges, which are defined by two shunt resistors and the two parallel second stage active

filters with gain.

4.2.2 EDBG Interface

The XAM is connected to the EDBG with the following interfaces:

•I2C: This is used to control and configure the XAM.

•SPI: Current measurement data is streamed to the EDBG via this interface. This is a unidirectional

channel from the XAM to the EDBG.

•SWD: The MCU in the XAM is programmed via SWD from the EDBG.

•Clock sync: Signal used to synchronize ADC measurements with the EDBG.

•Reference clock: Reference clock for the XAM.

4.2.3 Sample Rate

The raw sampling rate of the XAM is up to 250 kHz and with the default averaging configuration (average

of 16 samples), the actual output of the XAM is 16.67 ksps.

Info: The XAM output sample rate is not an integer fraction of the raw sampling.

4.2.4 Measurement Ranges and Accuracy

The XAM has four measurement ranges. These are defined by two shunt resistors and two gain stages.

Table 4-2. XAM Measurement Ranges and Accuracy

Measurement

Range

Hardware Resolution Accuracy Comments

Range 1 Low current shunt and

high gain stage

20 nA 1 LSB ±1% Accuracy will decrease below

1μA. Typical accuracy for

300nA is 1 LSB ± 10%.

Range 2 Low current shunt and

low gain stage

150 nA 1 LSB ±1%

Range 3 High current shunt and

high gain stage

10 μA 1 LSB ±1%

Range 4 High current shunt and

low gain stage

100 μA 1 LSB ±1% Accuracy will decrease

above 100 mA. Typical

accuracy is 1 LSB ±5% at

400 mA. Maximum current is

400 mA.

SAM E54 Xplained Pro

The ranges are automatically switched by the XAM to achieve the best measurement results and the

currently active range is visualized in the Data Visualizer front-end tool. The maximum voltage drop over

the shunt resistor is 100 mV, and the XAM switches the range automatically before reaching this limit.

4.3 Hardware Identification System

All Xplained Pro extension boards come with an identification chip (ATSHA204A CryptoAuthentication™

chip) to uniquely identify the boards that are connected to the Xplained Pro evaluation kit. This chip

contains information that identifies the extension with its name and some extra data. When an Xplained

Pro extension is connected to an Xplained Pro evaluation kit, the information is read and sent to Atmel

Studio. The following table shows the data fields stored in the ID chip with example content.

Table 4-3. Xplained Pro ID Chip Content

Data Field Data Type Example Content

Manufacturer ASCII string Atmel'\0'

Product Name ASCII string Segment LCD1 Xplained Pro'\0'

Product Revision ASCII string 02'\0'

Product Serial Number ASCII string 1774020200000010’\0’

Minimum Voltage [mV] uint16_t 3000

Maximum Voltage [mV] uint16_t 3600

Maximum Current [mA] uint16_t 30

4.4 Power Sources

The SAM E54 Xplained Pro kit can be powered by several power sources, as listed in the table below.

Table 4-4. Power Sources for SAM E54 Xplained Pro

Power Source Voltage Requirements Current Requirements Connector Marking

External Power 5V ±2% (±100mV) for

USB host operation.

4.3V to 5.5V if a USB

host operation is not

required.

In USB host applications

a minimum of 1A is

recommended to supply

the kit and the USB

device.

Maximum recommended

current is 2A.

PWR

Embedded debugger

USB

4.4V to 5.25V (according

to USB spec.)

500 mA (according to

USB spec.)

DEBUG USB

Target USB 4.4V to 5.25V (according

to USB spec.)

500 mA (according to

USB spec.)

TARGET USB

The kit automatically detects which power sources are available and chooses which one to use according

to the following priority:

1. External power.

SAM E54 Xplained Pro

2. Embedded Debugger USB.

3. Target USB.

Info: External power is required when 500mA from a USB connector is not enough to power

the board with possible extension boards. A connected USB device in a USB host application

might easily exceed this limit.

4.5 Xplained Pro Headers and Connectors

4.5.1 Xplained Pro Standard Extension Header

All Xplained Pro kits have one or more dual row, 20-pin, 100-mil extension header. The Xplained Pro

MCU boards have male headers, while the Xplained Pro extensions have their female counterparts. All

connected pins follow the defined pin description in the table.

Info: All pins are not always connected on all extension headers.

The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU

boards or to access the pins of the target microcontroller on Xplained Pro MCU boards directly.

Table 4-5. Xplained Pro Standard Extension Header

Pin Number Pin Name Description

1 ID Pin to communicate with the ID chip on an extension board

2 GND Ground

3 ADC(+) Analog-to-Digital Converter; alternatively, a pin for the positive

terminal of a differential ADC

4 ADC(-) Analog-to-Digital Converter; alternatively, a pin for the negative

terminal of a differential ADC

5 GPIO1 General purpose I/O pin

6 GPIO2 General purpose I/O pin

7 PWM(+) Pulse width modulation; alternatively, a pin for the positive part of a

differential PWM

8 PWM(-) Pulse width modulation; alternatively, a pin for the negative part of a

differential PWM

9 IRQ/GPIO Interrupt request pin and/or general purpose I/O pin

10 SPI_SS_B/

GPIO

Slave select pin for Serial Peripheral Interface (SPI) and/or general

purpose I/O pin

11 I2C_SDA Data pin for I2C interface. Always connected, bus type

12 I2C_SCL Clock pin for I2C interface. Always connected, bus type

SAM E54 Xplained Pro

Pin Number Pin Name Description

13 UART_RX Receiver pin of target device UART

14 UART_TX Transmitter pin of target device UART

15 SPI_SS_A Slave select for SPI. This pin should preferably not be connected to

anything else.

16 SPI_MOSI SPI master out slave in pin. Always connected, bus type

17 SPI_MISO SPI master in slave out pin. Always connected, bus type

18 SPI_SCK SPI clock pin. Always connected, bus type

19 GND Ground pin for extension boards

20 VCC Power pin for extension boards

4.5.2 Xplained Pro Power Header

The power header can be used to connect external power to the SAM E54 Xplained Pro kit. The kit

automatically detects and switches to any external power if supplied. The power header can also be used

to supply power to external peripherals or extension boards. Ensure that the total current does not

exceed the recommended current limit of the on-board regulator when using the 3.3V pin.

Table 4-6. Xplained Pro Power Header

Pin Number Pin Name Description

1 VEXT_P5V0 External 5V input pin

2 GND Ground pin

3 VCC_P5V0 Unregulated 5V pin (an output, derived from one of the input

sources)

4 VCC_P3V3 Regulated 3.3V pin (an output, used as main power supply

for the kit)

SAM E54 Xplained Pro

5. Hardware User Guide

5.1 Power Distribution

SAM E54 Xplained Pro has three power sources: EDBG USB, Target USB, and/or external 5.0V. The kit

will automatically select a source to draw power from. The kit has two on-board 3.3V voltage regulators,

one for the EDBG and XAM, and one for the ATSAME54P20A and other peripherals.

An onboard super capacitor (47 mF) is charged to 3.3V from the target 3.3V net. The super capacitor is

connected to PB03 (VBAT) through a selection header and is intended for backup use in sleep modes.

Figure 5-1. Power Supply Block Diagram

VCC_P5V0

EDBG & XAM

SAME54P20

Regulator 3.3V

Power source

Power switch

Power converter

Power consumer

VCC_P3V3

Peripherals

Power

Measurement

Select

Auto mux disable

External 5V

input

EDBG USB

Target USB

Auto mux with

current limit

Regulator 3.3V

Jumper

VCC_MCU

VCC_TARGET

Supercap

Select

VBAT

5.2 Connectors

The following sections describes the implementation of the relevant connectors and headers on SAM E54

Xplained Pro and their connection to the ATSAME54P20A. The tables of connections in the sections also

describes which signals are shared between the headers and on-board functionality. The figure below

shows all available connectors and jumpers on SAM E54 Xplained Pro.

SAM E54 Xplained Pro

Figure 5-2. SAM E54 Xplained Pro Connector Overview

5.2.1 Xplained Pro Standard Extension Headers

The Xplained Pro extension headers EXT1, EXT2, and EXT3 offer access to the I/O of the microcontroller

to expand the board, for example, by connecting extensions to the board. These headers are based on

the standard Xplained Pro extension header specification and the connections are shown in the table

below. The headers have a pitch of 2.54 mm.

SAM E54 Xplained Pro

Table 5-1. Extension Header EXT1

EXT1 pin SAM E54

Function Shared functionality

1 [ID] - - Communication line to the ID

chip on an extension board

2 [GND] - - Ground

3 [ADC(+)] PB04 ADC1/AIN[6] -

4 [ADC(-)] PB05 ADC1/AIN[7] -

5 [GPIO1] PA06 GPIO (RTS) -

6 [GPIO2] PA07 GPIO (CTS) -

7 [PWM(+)] PB08 TC4/WO[0] -

8 [PWM(-)] PB09 TC4/WO[1] -

9 [IRQ/GPIO] PB07 IRQ7/GPIO -

10 [SPI_SS_B/GPIO] PA27 GPIO -

11 [TWI_SDA] PA22 SERCOM3 PAD[0] I²C SDA PCC

12 [TWI_SCL] PA23 SERCOM3 PAD[1] I²C SCL PCC

13 [USART_RX] PA05 SERCOM0 PAD[1] UART RX -

14 [USART_TX] PA04 SERCOM0 PAD[0] UART TX -

15 [SPI_SS_A] PB28 SERCOM4 PAD[2] SPI SS -

16 [SPI_MOSI] PB27 SERCOM4 PAD[0] SPI MOSI -

17 [SPI_MISO] PB29 SERCOM4 PAD[3] SPI MISO -

18 [SPI_SCK] PB26 SERCOM4 PAD[1] SPI SCK -

19 [GND] - - Ground

20 [VCC] - - Power for extension board

Table 5-2. Extension Header EXT2

EXT2 pin SAM E54

Function Shared functionality

1 [ID] - - Communication line to the ID

chip on an extension board

2 [GND] - - Ground

3 [ADC(+)] PB00 ADC0/AIN[12] -

4 [ADC(-)] PA03 ADC0/AIN[1] -

5 [GPIO1] PB01 GPIO -

6 [GPIO2] PB06 GPIO -

7 [PWM(+)] PB14 TCC4/WO[4] PCC

SAM E54 Xplained Pro

EXT2 pin SAM E54

Function Shared functionality

8 [PWM(-)] PB15 TCC4/WO[5] PCC

9 [IRQ/GPIO] PD00 IRQ0/GPIO -

10 [SPI_SS_B/GPIO] PB02 GPIO -

11 [TWI_SDA] PD08 SERCOM7 PAD[0] I²C SDA AT24MAC402, ATECC508, PCC,

EXT3, and EDBG DGI

12 [TWI_SCL] PD09 SERCOM7 PAD[1] I²C SCL AT24MAC402, ATECC508, PCC,

EXT3, and EDBG DGI

13 [USART_RX] PB17 SERCOM5 PAD[1] UART RX -

14 [USART_TX] PB16 SERCOM5 PAD[0] UART TX -

15 [SPI_SS_A] PC06 SERCOM6 PAD[2] SPI SS -

16 [SPI_MOSI] PC04 SERCOM6 PAD[0] SPI MOSI EXT3 and EDBG DGI

17 [SPI_MISO] PC07 SERCOM6 PAD[3] SPI MISO EXT3 and EDBG DGI

18 [SPI_SCK] PC05 SERCOM6 PAD[1] SPI SCK EXT3 and EDBG DGI

19 [GND] - - Ground

20 [VCC] - - Power for extension board

Table 5-3. Extension Header EXT3

EXT3 pin SAM E54

Function Shared functionality

1 [ID] - - Communication line to the ID

chip on an extension board

2 [GND] - - Ground

3 [ADC(+)] PC02 ADC1/AIN[4]

4 [ADC(-)] PC03 ADC1/AIN[5]

5 [GPIO1] PC01 GPIO

6 [GPIO2] PC10 GPIO -

7 [PWM(+)] PD10 TCC0/WO[3] -

8 [PWM(-)] PD11 TCC0/WO[4] -

9 [IRQ/GPIO] PC30 IRQ14/GPIO -

10 [SPI_SS_B/GPIO] PC31 GPIO -

11 [TWI_SDA] PD08 SERCOM7 PAD[0] I²C SDA AT24MAC402, ATECC508, PCC,

EXT2, and EDBG DGI

12 [TWI_SCL] PD09 SERCOM7 PAD[1] I²C SCL AT24MAC402, ATECC508, PCC,

EXT2, and EDBG DGI

SAM E54 Xplained Pro

EXT3 pin SAM E54

Function Shared functionality

13 [USART_RX] PC23 SERCOM1 PAD[1] UART RX -

14 [USART_TX] PC22 SERCOM1 PAD[0] UART TX -

15 [SPI_SS_A] PC14 GPIO -

16 [SPI_MOSI] PC04 SERCOM6 PAD[0] SPI MOSI EXT2 and EDBG DGI

17 [SPI_MISO] PC07 SERCOM6 PAD[3] SPI MISO EXT2 and EDBG DGI

18 [SPI_SCK] PC05 SERCOM6 PAD[1] SPI SCK EXT2 and EDBG DGI

19 [GND] - - Ground

20 [VCC] - - Power for extension board

5.2.2 SD/SDIO Card

SAM E54 Xplained Pro has one standard SD card connector which is connected to the SD/MMC Host

Controller (SDHC) of the SAM E54. The table below lists all I/O-lines connected to the SD card

connector.

Table 5-4. SD/SDIO Card Connection

SAM E54 pin Function Shared functionality

PB18 MCDA0 (DAT0)

PB19 MCDA1 (DAT1)

PB20 MCDA2 (DAT2)

PB21 MCDA3 (DAT3)

PA21 MCCK (CLK) PCC

PA20 MCCDA (CMD) PCC

PD20 Card Detect (C/D) -

PD21 Write Protect (WP) -

5.2.3 PCC Camera Connector

A 2x10, 100-mil pin-header footprint for camera connector is implemented to give access to the SAM

E54's Parallel Capture Controller (PCC). The footprint is compatible with common ArduCAM modules.

Info: The PCC connector is not functional by default due to shared functionality with Ethernet,

QTouch, SD Card, EXT1, and EXT2. If using the PCC, you will partially or fully loose the ability

to use these other functions.

Info: Soldering is required to get the PCC functional. Refer to Kit Modifications for details on

modifications needed.

SAM E54 Xplained Pro

Tip: The DEN1 and DEN2 signals connected to VSYNC and HYSNC on the PCC camera

connector are used to tell the PCC module when there is valid data to sample on the data pins.

If interrupts are required when the DEN1 and DEN2 signals changes, the I/O pins (PA12 and

PA13) has to be multiplexed to the EIC function in the GPIO module. The PCC module will still

sample the DEN pins when they are multiplexed to the EIC function.

Table 5-5. PCC Camera Connector

Pin number SAM E54 pin Function Shared functionality

1 [VCC] - VCC_TARGET_P3V3

2 [GND] - GND

3 [SCL] PD09 SERCOM7 PAD[1] I²C SCL AT24MAC402, ATECC508,

EXT2, EXT3, and EDBG DGI

4 [SDA] PD08 SERCOM7 PAD[0] I²C SDA AT24MAC402, ATECC508,

EXT2, EXT3, and EDBG DGI

5 [VSYNC] PA12 PCC_DEN1 Ethernet

6 [HSYNC] PA13 PCC_DEN2 Ethernet

7 [PCLK] PA14 PCC_CLK Ethernet

8 [XCLK] PA15 GCLK_IO1 Ethernet

9 [DOUT07] PA231) PCC_DATA7 EXT1

10 [DOUT06] PA221) PCC_DATA6 EXT1

11 [DOUT05] PA211) PCC_DATA5 SD Card

12 [DOUT04] PA201) PCC_DATA4 SD Card

13 [DOUT03] PA19 PCC_DATA3 Ethernet

14 [DOUT02] PA18 PCC_DATA2 Ethernet

15 [DOUT01] PA17 PCC_DATA1 Ethernet

16 [DOUT00] PA16 PCC_DATA0 QTouch

17 [DOUT09] PB15 PCC_DATA9 EXT2

18 [DOUT08] PB14 PCC_DATA8 EXT2

19 [RESET] PC12 GPIO Ethernet

20 [PWDN] PC11 GPIO Ethernet

Info:

1) Connected through a 0Ω resistor. Not connected by default.

SAM E54 Xplained Pro

5.2.4 Position Decoder

SAM E54 Xplained Pro has a header footprint for the position decoder module. The PDEC can be used

for quadrature, hall, and counter decoding.

Info: External pull-ups are mounted on the three signal lines for use with passive quadrature

encoders.

Table 5-6. PDEC Header

J407 pin SAM E54 pin Function Shared functionality

1 [PHASE A] PC16 PDEC QDI[0] EDBG GPIO0

2 [PHASE B] PC17 PDEC QDI[1] EDBG GPIO1

3 [INDEX] PC18 PDEC QDI[2] EDBG GPIO2 and User LED

4 - GND -

5.2.5 VBAT Backup Select

There is a 1x3, 100mil pin-header on the kit that can be used to select a power source for the VBAT pin

(PB03) marked "VBAT Select". The power source can either be the onboard 3.3V that supplies the other

peripherals on the board, or the onboard super capacitor. To select the source for the VBAT pin, move the

jumper to the desired voltage by placing the jumper between pin 1-2 for the super capacitor, or between

pin 2-3 for the targets MCU voltage. If power to the VBAT pin is not needed, the jumper can be removed

and PB03 at the center pin can be used as a GPIO.

Table 5-7. VBAT Select Header

Pin Function Description

1 VCC_SUPERCAP Power from super capacitor

2 PB03 VBAT input pin on SAM E54

3 VCC_MCU_P3V3 Power from the target MCU supply

5.2.6 ADC/DAC Header

There is a 1x2, 100mil pin-header on the kit that can be used for connecting analog peripherals for use

with the built in ADC or DAC.

Table 5-8. ADC/DAC Header

Pin number Pin/Net Function Shared functionality

1 PA02 ADC0/AIN0 or DAC/

VOUT0

2 GND Ground -

5.2.7 USB

SAM E54 Xplained Pro has a USB Micro-AB connector for use with the SAM E54 USB module labeled

TARGET USB on the kit. To be able to detect when a target USB cable is connected in self-powered

mode, a GPIO is used to detect the VBUS voltage on the connector. The USB ID is connected to a power

switch, which will automatically enable power to the USB port if a device cable is detected. The USB ID

SAM E54 Xplained Pro

signal is connected to PC19, which can force power from the kit to the USB connector by driving PC19

low. It is not possible to override and disable the power if a device is connected as the device cable will

short the USB ID to ground.

Table 5-9. USB Connections

SAM E54 pin USB function

PC00 VBUS Detection

PC19 USB ID

PA24 USB D-

PA25 USB D+

5.2.8 Cortex Debug Connector

SAM E54 Xplained Pro has a 10-pin 50-mil Cortex Debug Connector with SWD that can be used to

attach external debuggers to the ATSAME54P20A. Microchip debugging tools like the Atmel-ICE and

Power Debugger can connect directly to this connector.

Table 5-10. Cortex Debug Connector

Cortex Debug

Connector pin

Pin/Net Function Shared functionality

1 [VCC] VCC_TARGET_P3V3 ATSAME54P20A

voltage

2 [SWDIO/TMS] PA31 SW bidirectional data TRACE and EDBG

SWD

3 [GND] GND Ground

4 [SWCLK/TCK] PA30 SW clock signal TRACE and EDBG

SWD

5 [GND] GND Ground

6 [SWO/TDO] PB30 SW output TRACE and EDBG

SWD

7 [KEY] - -

8 [NC/TDI] - -

9 [GNDDetect] GND Ground

10 [nRESET] RESETN Target reset signal RST BTN, TRACE, and

EDBG SWD

5.2.9 Cortex Debug Connector with Trace

ATSAME54P20A supports 4-bit parallel trace. SAM E54 Xplained Pro implements a 20-pin, 50-mil Cortex

Debug + ETM Connector with SWD and 4-bit parallel trace. The connector is keyed (pin 7 is removed).

To use the parallel trace functionality an external debugger with trace support and 20-pin Cortex Debug +

ETM Connector pin-out has to be used. The table below shows the connections on the kit.

SAM E54 Xplained Pro

Table 5-11. Cortex Debug + ETM Connector

Pin number Pin/Net Function Shared functionality

1 [VTREF] VCC_TARGET_P3V3 ATSAME54P20A

voltage

2 [TMS/SWDIO] PA31 SWDIO Cortex DBG and EDBG

SWD

3 [GND] GND Ground

4 [TCK/SWCLK] PA30 SWCLK Cortex DBG and EDBG

SWD

5 [GND] GND Ground

6 [TDO/SWO] PB30 SWO Cortex DBG and EDBG

SWD

7 [KEY] - Not connected, the pin is

removed.

8 [TDI] - -

9 [GND] GND Ground

10 [nSRST] RESET_N Reset RST BTN, Cortex DBG,

and EDBG SWD

11 [NC] - -

12 [RTCK/TRACECLK] PC27 TRACECLK

13 [NC] - -

14 [SWO/D0] PC28 TRACEDATA[0]

15 [GND] GND Ground

16 [ntRST/D1] PC26 TRACEDATA[1]

17 [GND] GND Ground

18 [DBGRQ/D2] PC25 TRACEDATA[2]

19 [GND] GND Ground

20 [DBGACK/D3] PC24 TRACEDATA[3]

5.2.10 Current Measurement Header

An angled 1x2, 100-mil pin header marked with the MCU current measurement is located at the upper

edge of the SAM E54 Xplained Pro. All power to the ATSAME54P20A is exclusively routed through this

header (excluding power to headers and peripherals). 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

ATSAME54P20A to be powered through its I/O pins. This may cause permanent damage to the

device.

SAM E54 Xplained Pro

5.3 Peripherals

5.3.1 Crystals

SAM E54 Xplained Pro has a 32.768 kHz and a 12 MHz crystal that can be used as clock source for the

SAM E54 device. There are cut-straps located close to the crystals that can be used to measure the

oscillator safety factor. This is done by cutting the strap and adding a resistor across the strap. More

information about oscillator allowance and safety factor are available in the AVR4100 application note.

The 32.768 kHz crystal on SAM E54 Xplained Pro is a Kyocera Crystal Device Corporation

ST3215SB32768A0HPWBB 5pF crystal. The crystal has been matched to be driven in high drive mode

by the SAM E54.

The 12 MHz crystal on SAM E54 Xplained Pro is a Kyocera Crystal Device Corporation

CX3225CA12000D0KPSC1. The crystal has been matched to be driven with Automatic Loop Control

enabled in the SAM E54.

Both crystals have been formally tested and matched to the SAM E54 by Kyocera. The test reports are

available in the design documentation distributed with this document for SAM E54 Xplained Pro.

Info: Kyocera Crystal Device Corporation crystals that are matched with specific products can

be found on their web site: http://prdct-search.kyocera.co.jp/crystal-ic/?p=en_search/

Table 5-12. External 32.768kHz Crystal

SAM E54 pin Function

PA00 XIN32

PA01 XOUT32

Table 5-13. External 12MHz Crystal

SAM E54 pin Function

PB22 XIN1

PB23 XOUT1

Related Links

Design Documentation and Relevant Links

5.3.2 Mechanical Buttons

SAM E54 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to

the SAM E54 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.

Info: There is no pull-up resistor connected to the generic user button. Remember to enable

the internal pull-up in the SAM E54 to use the button.

SAM E54 Xplained Pro

Table 5-14. Mechanical Buttons

SAM E54 pin Silkscreen text Shared functionality

RESET RESET Cortex DBG , TRACE, and EDBG SWD

PB31 SW0 EDBG GPIO3

5.3.3 LED

There is one yellow LED available on the SAM E54 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 5-15. LED Connection

SAM E54 pin Function Shared functionality

PC18 Yellow LED0 PDEC and EDBG GPIO2

5.3.4 QTouch Button

There is one self capacitance button available on the SAM E54 Xplained Pro board that can be used as

user button. This QTouch button is intended to be driven by the built-in Peripheral Touch Controller (PTC)

of the device.

Info: To get started with QTouch, refer to QTouch® Library, or find examples in Atmel START.

Table 5-16. QTouch Connection

SAM E54 pin Silkscreen text Shared functionality

PA16 QT BUTTON PCC

5.3.5 Backup Super Capacitor

SAM E54 Xplained Pro has a 47 mF backup super capacitor for use with the SAM E54 backup system.

The super capacitor can be connected to the device as described in VBAT Backup Select.

Due to the high capacitive load represented by the super capacitor, a 220Ω limiting resistor is added to

reduce inrush current. The source for charging is the targets main supply and a low-power opamp is used

for disconnecting the charger input when removing power. This is added to avoid a current leak back to

the main supply from the super capacitor when power is removed.

A full charge of the super capacitor from an empty state will take approximately 45 seconds and can

supply the target device in backup mode with ULP running for up to ~20 hours. Other modes are not

characterized, but will reduce the available time in backup mode respectively. For more information about

the current consumption in other modes, refer to the electrical characteristics chapter in the SAM E54

datasheet.

Caution: Due to an issue with the VBAT pin in the A0 revision of ATSAME54P20A there is an

over-consumption of current in the VBAT pin when VBAT > VDDIO. This issue renders the on-

board super capacitor backup solution not usable.

Related Links

SAM E54 Xplained Pro

VBAT Pin

5.3.6 CAN

SAM E54 Xplained Pro has two CAN modules that performs communication according to ISO11898-1

(Bosch CAN specification 2.0 part A,B) and Bosch CAN FD specification V1.0.

CAN1 is connected to an on-board ATA6561 CAN physical-layer transceiver, the table below shows

connections between the ATSAME54P20A and the ATA6561.

Table 5-17. ATA6561 Connections

SAM E54 pin Function ATA6561 function Shared functionality

PB12 CAN1/TX TXD -

PB13 CAN1/RX RXD -

PC13 GPIO Standby -

5.3.7 Ethernet

ATSAME54P20A has a built-in 10/100Mbps Ethernet IEEE® 802.3 compatible MAC with RMII interface.

The MAC also supports energy efficient Ethernet (IEEE 802.3az). SAM E54 Xplained Pro connects the

MAC to a Micrel KSZ8091RNACA RMII physical-layer transceiver (PHY), with IEEE 802.3az support,

which is connected to one RJ45 Ethernet connector.

A unique EUI-48 address is available on every SAM E54 Xplained Pro through the onboard

AT24MAC402, the EUI-48 address can be used as a MAC address for the KSZ8091RNACA. The

address is also programmed into the onboard EDBG. For more information, see Kit Specific Data.

The table below lists all pins connected from the ATSAME54P20A to the Ethernet PHY.

Info: Several of the Ethernet signals are shared with the PCC connector. This means that

there is no Ethernet support if PCC is used in an application.

Table 5-18. KSZ8061RNBW Connections

SAM E54 pin Function Ethernet function Shared functionality

PA14 GTXCK REF_CLK PCC

PA17 GTXEN TXEN PCC

PA18 GTX0 TXD0 PCC

PA19 GTX1 TXD1 PCC

PC20 GRXDV CRS_DV

PA13 GRX0 RXD0 PCC

PA12 GRX1 RXD1 PCC

PA15 GRXER RXER PCC

PC11 GMDC MDC PCC

PC12 GMDIO MDIO PCC

SAM E54 Xplained Pro

SAM E54 pin Function Ethernet function Shared functionality

PD12 GPIO INTERRUPT

PC21 GPIO RESET

The KSZ8091RNACA also has a set of parameters that are latched in during reset based on I/O pin

levels. These configuration options have a default mode on the kit done by external pull-up and pull-down

resistors. For detailed information about the configuration, see the KSZ8091RNACA datasheet.

Table 5-19. KSZ8091RNACA Kit Configuration

Configuration name Default value on kit Default configuration

PHYAD 00 The PHYs address is 00000

PME_EN 0 Disable PME Enable output for

Wake-On-LAN

ANEN_SPEED 1 Auto negotiation enabled and

100Mbps link speed enabled

5.3.8 AT24MAC402

SAM E54 Xplained Pro features one external AT24MAC402 serial EEPROM with a EIA-48 MAC address

connected to the SAM E54 through I2C. This device contain a MAC address for use with the Ethernet

interface. The table below lists all I/O-lines connected to the ATMAC402 device.

Info: The I2C EEPROM address is 0x56 and extended address is 0x5E (7-bit, right adjusted

without R/W bit).

Table 5-20. AT24MAC402 Connections

AT24MAC402

SAM E54 pin Function Shared functionality

1 [A0] - Address bit 0 config (Pulled to

GND)

2 [A1] - Address bit 1 config (Pulled to

VCC)

3 [A2] - Address bit 2 config (Pulled to

VCC)

4 [GND] - GND -

5 [SDA] PD08 SERCOM7 PAD[0] I2C SDA ATECC508, PCC, EXT2, EXT3,

and EDBG DGI

6 [SCL] PD09 SERCOM7 PAD[1] I2C SCL ATECC508, PCC, EXT2, EXT3,

and EDBG DGI

7 [WP] - Write Protect (Pulled to GND) -

SAM E54 Xplained Pro

AT24MAC402

SAM E54 pin Function Shared functionality

8 [VCC] - VCC_TARGET_P3V3 -

9 [PAD] - - -

5.3.9 ATECC508A

SAM E54 Xplained Pro implements a ATECC508A Crypto Authentication device. The table below shows

all the connections between the ATECC508A and the ATSAME54P20A.

Info: The I2C address is 0x60 (7-bit, right adjusted without R/W bit).

Table 5-21. ATECC508A Connections

ATECC508A

SAM E54 pin Function Shared functionality

1 [NC] - - -

2 [NC] - - -

3 [NC] - - -

4 [GND] - GND -

5 [SDA] PD08 SERCOM7 PAD[0] I2C SDA AT24MAC402, PCC, EXT2,

EXT3, and EDBG DGI

6 [SCL] PD09 SERCOM7 PAD[1] I2C SCL AT24MAC402, PCC, EXT2,

EXT3, and EDBG DGI

7 [NC] - -

8 [VCC] - VCC_TARGET_P3V3 -

9 [PAD] - GND -

5.3.10 QSPI Flash

The SAM E54 Xplained Pro features one external MICRON, N25Q256A, 256Mbit QSPI NOR Flash

Memory. QSPI Flash access can be configured in the QSPI module in the SAM E54, with support for XIP

to run firmware directly from external flash. The table below lists all I/O-lines connected to the QSPI

Flash.

Info: The PCB tracks between the QSPI flash and the ATSAME54P20A are routed with 60Ω

impedance. The I/O drivers in the ATSAME54P20A should be set in high drive mode. The QSPI

flash I/O drive level can be configured to match 60Ω tracks in configuration registers in the QSPI

flash, refer to the QSPI datasheet for more information.

SAM E54 Xplained Pro

Table 5-22. QSPI Flash Connections

SAM E54

Function QSPI Flash function Shared functionality

PA08 QIO0 Slave In/IO0 -

PA09 QIO1 Slave Out/IO1 -

PA10 QIO2 Write Protect/IO2 -

PA11 QIO3 Hold/IO3 -

PB10 QSCK Clock -

PB11 QCS Chip Select -

5.3.11 I2S Signals

The ATSAME54P20A has a built in two channel Inter-IC Sound Controller (I2S).

There is no on-board IC connected to this module, but the signals are available on the different pin-

headers on the kit as shown in the table below.

Table 5-23. I2S Signals on SAM E54 Xplained Pro

Microcontroller Pin I2S Signal Pin-Header Location On-board Shared

PB16 SCK0 EXT2 pin 14

PB17 MCK0 EXT2 pin 13

PA20 FS0 Camera pin 121) SDCARD MCCDA

PA21 SDO Camera pin 111) SDCARD MCCK

PA22 SDI EXT1 pin 11 / Camera

pin 101)

PA23 FS1 EXT1 pin 12 / Camera

pin 91)

PB28 SCK1 EXT1 pin 15

PB29 MCK1 EXT1 pin 17

Info:

1) Soldering is required to connect these pins to the camera connector. The resistor footprint

R205, R206, R207, and R208 have to be populated by 0-ohm resistors. The location of the

footprints can be found in the Kit Modifications chapter.

Info: The I2S module can use more pins than listed in the table above. These signals are not

listed in the table as they are shared with the on-board QSPI Flash and CAN transceiver.

Related Links

Kit Modifications

SAM E54 Xplained Pro

5.4 Embedded Debugger Implementation

SAM E54 Xplained Pro contain an Embedded Debugger (EDBG) that can be used to program and debug

the ATSAME54P20A using Serial Wire Debug (SWD). The Embedded Debugger also includes a Virtual

Com port interface over UART, a Data Gateway Interface over SPI, and I2C, and it includes four of the

SAM E54 GPIOs. The kit also includes an XAM extension processor to the Embedded Debugger for on-

board current measurement. Atmel Studio can be used as a front end for the Embedded Debugger.

5.4.1 Serial Wire Debug

The Serial Wire Debug (SWD) uses 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.

Table 5-24. SWD Connections

SAM E54 pin Function Shared functionality

PA30 SWCLK clock Cortex DBG and TRACE

PA31 SWDIO data Cortex DBG and TRACE

PB30 SWO output Cortex DBG and TRACE

RESET_N RESET Cortex DBG, TRACE, and RST BTN

5.4.2 Virtual COM Port

The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAME54P20A

UARTs. For further information on how to use the Virtual COM port, see Embedded Debugger.

Table 5-25. Virtual COM Port Connections

SAM E54 pin Function Shared functionality

PB24 SERCOM2 PAD[1] UART RXD (SAM E54 RX line) -

PB25 SERCOM2 PAD[0] UART TXD (SAM E54 TX line) -

5.4.3 Data Gateway Interface

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

DGI can be used to send a variety of data from the ATSAME54P20A to the host PC. For further

information on how to use the DGI interface, see Data Visualizer and the EDBG User Guide.

Table 5-26. DGI Interface Connections when using SPI

SAM E54 pin Function Shared functionality

PD01 GPIO SPI SS (Slave select) (SAM E54

is Master)

PC04 SERCOM6 PAD[0] SPI MOSI (Master

Out, Slave in)

EXT2 and EXT3

PC07 SERCOM6 PAD[3] SPI MISO (Master

In, Slave Out)

EXT2 and EXT3

PC05 SERCOM6 PAD[1] SPI SCK (Clock Out) EXT2 and EXT3

SAM E54 Xplained Pro

Table 5-27. DGI Interface Connections when using I2C

SAM E54 pin Function Shared functionality

PD08 SERCOM7 PAD[0] SDA (Data line) AT24MAC402, ATECC508, PCC, EXT2,

and EXT3

PD09 SERCOM7 PAD[1] SCL (Clock line) AT24MAC402, ATECC508, PCC, EXT2,

and EXT3

Four GPIO lines are connected to the Embedded Debugger. The EDBG can monitor these lines and time

stamp pin value changes. This makes it possible to accurately time stamp events in the SAM E54

application code. For further information on how to configure and use the GPIO monitoring features, see

Data Visualizer and the EDBG User Guide.

Table 5-28. GPIO Lines Connected to the EDBG

SAM E54 pin Function Shared functionality

PC16 GPIO0 PDEC

PC17 GPIO1 PDEC

PC18 GPIO2 PDEC and User LED

PB31 GPIO3 User SW0

5.4.4 XAM Configuration

On the SAM E54 Xplained Pro the MCU and the MCU peripherals (e.g. extensions) are powered by its

own regulator as shown in the figure below. All other parts of the board, mainly embedded debugger and

accompanying Xplained Pro Analog Module (XAM), are powered from a separate regulator. The current

to the MCU and peripherals can be measured by connecting them to the XAM output through jumper

settings.

SAM E54 Xplained Pro

Figure 5-3. SAM E54 Xplained Pro XAM Implementation Block Diagram

Target

Regulator

Current measurement

bypass jumper selection

Target MCU

Target

Peripherals

Xplained Pro MCU power

measurement jumper

Xplained Pro Analog

Module (XAM)

On the SAM E54 Xplained Pro the XAM can be used in four configurations:

1. No current measurement or external MCU current measurement: The XAM is bypassed and

thus the MCU and peripherals are supplied directly by the regulator. Set both jumpers in the

"BYPASS" position. In this configuration it is also possible to connect external measurement tools

on the Xplained Pro MCU power measurement header to measure MCU current directly instead of

using the XAM.

2. MCU current measurement: The XAM measures only the MCU current while the peripherals are

supplied directly by the regulator. For this configuration place the jumper for "I/O" (peripherals) into

the "BYPASS" position and the "MCU" into the "MEASURE" position.

3. Peripherals measurement: The XAM measures only the peripherals current while the MCU is

directly supplied by the regulator. For this configuration place the jumper for "MCU" into the

"BYPASS" position and the "I/O" jumper into the "MEASURE" position.

4. MCU and peripherals measurement: In this configuration both the MCU and peripherals are

measured by the XAM. Place both jumpers on "I/O" and "MCU" headers in the "MEASURE"

position.

5.5 Kit Modifications

SAM E54 Xplained Pro has several resistors that can be used to disconnect I/O pins of the

ATSAME54P20A from connectors and on-board ICs, and to disconnect power signals.

SAM E54 Xplained Pro

Info: Note that there are some resistors that aren't mounted by default on the kit listed in the

table below.

Table 5-29. Resistors

Designat

Value From To Comment

J101 cut-strap VCC_P3V3 VCC_P3V3_CM_IN ATSAME54P20A, peripherals

and connectors power supply

R101 0Ω U100 OUT VCC_CM_P3V3 XAM power supply

R103 0Ω U100 OUT VCC_EDBG_P3V3 EDBG power supply

R205 0Ω [N.M.] J406 PCC DATA04 PA20 SDHC CMD Allows complete or partial

disconnect of header J406,

Parallel Capture Controller,

header from ATSAME54P20A,

and shared signals. Remove the

mounted resistors and mount the

unmounted resistors if using the

PCC header.

R206 0Ω [N.M.] J406 PCC DATA05 PA21 SHDC CK

R207 0Ω [N.M.] J406 PCC DATA06 PA22 I2C HS SDA

R208 0Ω [N.M.] J406 PCC DATA07 PA23 I2C HS SCL

R308 10kΩ PCC DATA0 QTouch Button

R621 0Ω PA17 ETH GTXEN PHY_TXEN

R622 0Ω PA18 ETH GTX0 PHY_TXD0

R623 0Ω PA19 ETH GTX1 PHY_TXD1

R624 0Ω PA13 ETH GRX0 PHY_RXD0

R625 0Ω PA12 ETH GRX1 PHY_RXD1

R626 0Ω PA15 ETH GRXER PHY_RXER

R628 0Ω PC12 ETH GMDIO PHY_MDIO

R629 0Ω PC11 ETH GMDC PHY_MDC

R630 0Ω PA14 ETH GTXCK PHY_REFCLK

R609 4.7kΩ

[N.M.]

PHYAD VCC_TARGET_P3V3 Configuration for default start-up

conditions for the Ethernet PHY.

R616 1kΩ PHYAD GND

R613 4.7kΩ

[N.M.]

PME_EN VCC_TARGET_P3V3

R618 1kΩ

[N.M.]

PME_EN GND

R605 4.7kΩ ANEN_SPEED VCC_TARGET_P3V3

R619 1kΩ ANEN_SPEED GND

R802 39Ω EDBG TARGET

RESET

TARGET MCU

RESET

Debug interface from the EDBG

to the ATSAME54P20A

R803 0Ω EDBG SWCLK PA30 SWCLK

SAM E54 Xplained Pro

Designat

Value From To Comment

R824 0Ω EDBG SWDIO PA31 SWDIO

R827 0Ω EDBG SWO PB30 SWO

R808 0Ω EDBG CDC RX PB25 UART TX EDBG CDC and DGI interfaces

to the ATSAME54P20A

R809 330Ω EDBG CDC TX PB24 UART RX

R810 330Ω EDBG DGI_GPIO0 PC16 GPIO

R811 330Ω EDBG DGI_GPIO1 PC17 GPIO

R813 0Ω EDBG I2C SDA PD08 I2C SDA

R814 0Ω EDBG I2C SCL PD09 I2C SCL

R815 330Ω EDBG SPI MISO PC07 SPI MISO

R816 0Ω EDBG SPI MOSI PC04 SPI MOSI

R817 0Ω EDBG SPI SCK PC05 SPI SCK

R818 0Ω EDBG SS PD01 SPI SS

R825 330Ω EDBG DGI_GPIO2 PC18 GPIO

R826 330Ω EDBG DGI_GPIO3 PB31 GPIO

R812 0Ω TARGET RESET

SENSE

TARGET_MCU_RES

Reset sense signal to EDBG,

used to detect external resets

SAM E54 Xplained Pro

Figure 5-4. Assembly Drawing Top

SAM E54 Xplained Pro

Figure 5-5. Assembly Drawing Bottom

5.5.1 Enable PCC Header

The PCC header on the SAM E54 Xplained Pro board is by default not functional due to shared

connections with Ethernet, QTouch, SD Card, EXT1, and EXT2.

To modify the kit to fully enable the PCC header, do the following:

• Remove the resistors: R621, R622, R623, R624, R625, R626, R628, R629, R630 to separate the

Ethernet PHY from the lines

• Mount 0Ω resistors: R205, R206, R207, R208

SAM E54 Xplained Pro

• Optionally remove: R308 (There is no contention here, but can represent a large load on the

signal.)

• Remove any SD/SDIO cards from the SD Card connector

caution: PCC will not work at the same time as Ethernet, SD Card, QTouch, and I2C on EXT1.

Info: Revert the steps to restore the original functionality. Use 0Ω resistors or solder blobs to

short strap.

5.5.2 Operation at Other Voltages

The SAM E54 Xplained Pro board is operated at 3.3V by default, but it also has the possibility of running

at lower voltages from an external supply. The EDBG is designed to run from a 3.3V supply and won't

work on other voltages, therefore all connections from the EDBG and the on board 3.3V regulator to the

ATSAME54P20A have to be removed.

To completely disconnect the EDBG and the on-board power supply from the ATSAME54P20A do the

following:

• Remove the two jumpers from the on-board 3-pin current measurement headers (J100 and J102),

and connect the two center pins (pin 2) together with a wire or an ammeter, as shown in Figure 5-7

• Remove R802, R803, R808, R809, R810, R811, R812, R813, R814, R815, R816, R817, R818,

R824, R825, R826, R827

• Optionally cut J101 to remove power to the on-board current measurement headers (J100 and

J102) from the on-board regulator

Figure 5-6 shows all components that have to be removed from the bottom side of the PCB for operation

at other voltages. To locate the other components, see the assembly drawing in the section above. When

the components are removed, the kit can be supplied with a desired voltage through the pins marked

3.3V (pin four) and GND (pin two) on the Xplained Pro power header. To program and debug the

ATSAME54P20A the 2x5 50mil Cortex debug connector has to be used with an external debugger.

Info: Operating the ATSAME54P20A on other voltages than 3.3V requires physical

modifications on the kit using a soldering iron and an external debugger for programming the

ATSAME54P20A. The on-board current measurement only works at 3.3V. The on-board LED is

selected for 3.3V operation, the light level at 1.8V operation is very low. To increase the emitted

light level the value of the series resistor can be lowered. The EDBG functionality can be

restored by re-soldering the removed components and soldering a 0Ω resistor over J101.

Caution: The voltage supplied through the power header is applied directly to the

ATSAME54P20A and the extension headers. Applying a voltage greater than 3.3V may damage

the board permanently.

SAM E54 Xplained Pro

Figure 5-6. SAM E54 Xplained Pro EDBG Disconnect

Figure 5-7. SAM E54 Xplained Pro Current Measurement Headers

Related Links

Xplained Pro Power Header

Cortex Debug Connector

Connectors

5.6 Low-Power Mode

Acquiring the lowest power consumption of the device requires some specific settings of the GPIOs in

relation to the connected peripherals. The table below describes the settings needed for the lowest

possible power consumption. If not otherwise noted, all pins should disable all digital logic (DIR = 0, INEN

= 0 and PULLEN = 0).

Info: The power consumption on the miccrocontrollers VDD will be higher than specified in the

electrical characteristics of the device due to connected peripherals.

Table 5-30. Low Power Settings

SAM E54 pin Signal State Description

PC21 ETH RESET Output low The on-board Ethernet PHY KSZ8091 continuously

generates a 50 MHz clock signal to PA14 on the

SAM E54. When the KSZ8091 is in reset the clock

signal is not generated and the power consumption

of the SAM E54 is reduced.

SAM E54 Xplained Pro

6. Kit Specific Data

One of the Flash user pages in the EDBG is programmed with data specific to the SAM E54 Xplained

Pro. The data can be read through the I2C interface connected to the EDBG from the target application.

For detailed information, refer to the EDBG User Guide. All data is stored as little endian. The table below

shows the memory map for the Flash user page.

Table 6-1. MAC48Register, Offset: 0x00

Name Description Size [bits]

MAC48 Unique address assigned to the kit, value taken from the onboard

AT24MAC402.

SAM E54 Xplained Pro

7. Appendix

7.1 Getting Started with IAR

IAR Embedded Workbench® for ARM® is a proprietary, high-efficiency compiler not based on GCC. The

programming and debugging of Xplained Pro kits are supported in IAR™ Embedded Workbench for ARM

using the common CMSIS-DAP interface. Some initial settings have to be set up in the project to get

programming and debugging to work.

The following steps explain how to set up a project for programming and debugging:

1. Open the project that needs to be configured. Open the OPTIONS dialog for the project.

2. In the General Options category, select the Target tab. Select the "Device" for the project or the

"Core" of the device.

3. In the Debugger category, select the Setup tab. Select CMSIS DAP as the driver.

4. In the Debugger category, select the Download tab. Select the Use flash loader(s) option.

5. In the Debugger > CMSIS DAP category, select the Setup tab. Select System (default) as the

reset method.

6. In the category Debugger > CMSIS DAP, select the JTAG/SWD tab. Select SWD as the interface

and optionally select the SWD speed.

Figure 7-1. Select Target Device

SAM E54 Xplained Pro

Figure 7-2. Select Debugger

Figure 7-3. Configure Flash Loader

SAM E54 Xplained Pro

Figure 7-4. Configure Reset

Figure 7-5. Configure Interface

SAM E54 Xplained Pro

7.2 Connecting External Debuggers to an Xplained Pro Board

The Xplained Pro kits that features a 10-pin 50mil debug connector can use external debug tools like

SAM-ICE™ or Atmel-ICE instead of the built-in EDBG. Evaluation kits with devices using the SWD

interface on-board has a connector that is pinout compatible with the Cortex Debug Connector.

The SAM-ICE is connected to the debug connector on an Xplained Pro using either an Atmel-ICE

adapter, SAM-ICE adapter, or a 10-pin 50-mil header to squid cable. When using a squid cable, see the

table and figures below for how to connect the SAM-ICE to the Xplained Pro board.

Table 7-1. Squid Cable Connections

Squid Cable Pin SAM-ICE Pin

1 (VCC) 1 (VTref)

2 (SWDIO/TMS) 7 (TMS)

3 (GND) 4 (GND)

4 (SWCLK/TCK) 9 (TCK)

5 (GND) 6 (GND)

6 (SWO/TDO) 13 (TDO) (1)

7 (Not used)

8 (Not used)

9 (Not used)

10 (RESET) 15 (RESET)

Note:

1. Optional pin; used only when the device functionality supports TDO.

Figure 7-6. SAM-ICE using a Squid Cable

SAM E54 Xplained Pro

Figure 7-7. SAM-ICE using an Atmel-ICE Adapter

Important:

If contention with the on-board EDBG occurs, power the Xplained Pro board from another input

like the external power header or from the target USB. Physically removing the connection

between the EDBG and the debug header by removing 0Ω resistors, where available, or cutting

the tracks to the EDBG can also be done.

SAM E54 Xplained Pro

8. Hardware Revision History and Known Issues

This user guide is written to reflect the latest available revision of the kit. This chapter contains

information about known issues, a revision history of older revisions, and how older revisions differ from

the latest revision.

8.1 Identifying Product ID and Revision

The revision and product identifier of the Xplained Pro boards can be found in two ways: either through

Atmel Studio or by looking at the sticker on the bottom side of the PCB.

When an Xplained Pro MCU board is connected to a computer with Atmel Studio running, an information

window with the serial number is shown. The first six digits of the serial number contain the product

identifier and revision. Information about connected Xplained Pro extension boards is also shown in the

window.

The same information can be found on the sticker on the bottom side of the PCB. Most kits have stickers

that have the identifier and revision printed in plain text as A09-nnnn\rr, where nnnn is the identifier and rr

is the revision. Boards with limited space have a sticker with only a data matrix code, which contains a

serial number string.

The serial number string has the following format:

"nnnnrrssssssssss"

n = product identifier

r = revision

s = serial number

The product identifier for the SAM E54 Xplained Pro is A09-2748.

8.2 Revision 5

Device revision A0 of ATSAME54P20A is mounted on revision 5 of SAM E54 Xplained Pro.

8.2.1 VBAT Pin

There is an issue with the VBAT pin in ATSAME54P20A revision A0. When VBAT > VDDIO there is a

current over-consumption rendering the on-board super-capacitor backup solution unusable.

8.3 Revision 4

Revision 4 is the initially released revision.

The Early Adopter version of ATSAME54P20A is mounted on revision 4 of SAM E54 Xplained Pro.

8.3.1 VBAT Pin

There is an issue with the VBAT pin in ATSAME54P20A revision A0. When VBAT > VDDIO there is a

current over-consumption rendering the on-board super-capacitor backup solution unusable.

SAM E54 Xplained Pro

8.3.2 32.768 KHz Crystal

The 32.768 KHz crystal mounted on revision 4 of SAM E54 Xplained Pro is a Kyocera Crystal Device

Corporation ST3215SB32768E0HPWBB 9 pF crystal. The external matching capacitors C300 and C301

are 15 pF. The crystal is matched to be driven by the SAM E54 in standard mode.

Info: Using a crystal with lower capacitive load will reduce the required drive level to keep the

crystal oscillation. Revision 5 of SAM E54 Xplained Pro replaced the 32.768kHz crystal with the

5 pF version ST3215SB32768A0HPWBB to reduce the drive level from 62nW to 15nW.

SAM E54 Xplained Pro

9. Document Revision History

Date Comment

07/2017 Initial document release.

SAM E54 Xplained Pro

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Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the

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• There are dishonest and possibly illegal methods used to breach the code protection feature. All of

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SAM E54 Xplained Pro

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their

code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the

code protection features of our products. Attempts to break Microchip’s code protection feature may be a

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SAM E54 Xplained Pro

ISBN: 978-1-5224-1929-7

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SAM E54 Xplained Pro

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