SMART ARM-based Microcontrollers
SAM G55 Xplained Pro
USER GUIDE
Preface
The Atmel® SAM G55 Xplained Pro evaluation kit is a hardware platform to
evaluate the ATSAMG55J19 microcontroller.
This kit is supported by the Atmel Studio integrated development platform
and provides easy access to the features of the Atmel ATSAMG55J19. It
provides the information to integrate the device in a customer design.
The Xplained Pro MCU series evaluation kits include an on-board
Embedded Debugger and external tools are not necessary to program or
debug the ATSAMG55J19.
The Xplained Pro extension series evaluation kits offer additional peripherals
to extend the features of the board and ease the development of customer
designs.
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Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................3
1.1. Features....................................................................................................................................... 3
1.2. Kit Overview................................................................................................................................. 3
2. Getting Started...........................................................................................................5
2.1. Xplained Pro Quick Start.............................................................................................................. 5
2.2. Design Documentation and Relevant Links................................................................................. 5
3. Xplained Pro.............................................................................................................. 7
3.1. Embedded Debugger................................................................................................................... 7
3.2. Hardware Identification System....................................................................................................8
3.3. Power Sources............................................................................................................................. 8
3.4. Xplained Pro Headers and Connectors........................................................................................9
3.4.1. Xplained Pro Standard Extension Header..................................................................... 9
3.4.2. Xplained Pro Power Header........................................................................................ 10
4. Hardware User Guide.............................................................................................. 11
4.1. Connectors................................................................................................................................. 11
4.1.1. Xplained Pro Standard Extension Headers..................................................................11
4.1.2. High Speed TWI Interface........................................................................................... 13
4.1.3. Current Measurement Header..................................................................................... 14
4.2. Peripherals................................................................................................................................. 14
4.2.1. Crystals........................................................................................................................14
4.2.2. Mechanical Buttons..................................................................................................... 14
4.2.3. LED..............................................................................................................................14
4.2.4. USB............................................................................................................................. 15
4.3. Embedded Debugger Implementation........................................................................................15
4.3.1. Serial Wire Debug........................................................................................................15
4.3.2. Virtual COM Port..........................................................................................................15
4.3.3. Atmel Data Gateway Interface.....................................................................................15
4.4. Jumper Description.....................................................................................................................16
4.4.1. Chip Erase Jumper...................................................................................................... 16
5. Appendix..................................................................................................................17
5.1. Getting Started with IAR.............................................................................................................17
5.2. Connecting a SAM-ICE to an Xplained Pro Board..................................................................... 20
6. Hardware Revision History and Known Issues........................................................22
6.1. Identifying Product ID and Revision........................................................................................... 22
6.2. Revision 3...................................................................................................................................22
7. Document Revision History..................................................................................... 23
8. Evaluation Board/Kit Important Notice.....................................................................24
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1. Introduction
1.1. Features
• Atmel ATSAMG55J19 microcontroller
• Embedded debugger (EDBG)
– USB interface
– Programming and debugging (target) through Serial Wire Debug (SWD)
– Virtual COM-port interface to target via UART
– Atmel Data Gateway interface (DGI) to target via USART or TWI
– Four GPIOs connected to target for code instrumentation
– Target USB connection with Host and Device support
• Digital I/O
– Two mechanical buttons (including one reset button)
– One user LED
– Three extension headers
– I2C interface for SAM G55 high speed I2C slave
• Three possible power sources
– External power
– Embedded debugger USB
– Target USB
• 32kHz crystal
1.2. Kit Overview
The Atmel SAM G55 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel
ATSAMG55J19.
The kit offers a set of features that enables the SAM G55 user to get started using the SAM G55's
peripherals right away and to get an understanding of how to integrate the SAM G55 in their own design.
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Figure 1-1. SAM G55 Xplained Pro Evaluation Kit Overview
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2. Getting Started
2.1. Xplained Pro Quick Start
Steps to start exploring the Atmel Xplained Pro platform:
1. Download Atmel Studio.
2. Launch Atmel Studio.
3. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the DEBUG USB
port on the kit.
When the Xplained Pro MCU kit is connected to your computer for the first time, the operating system will
perform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft
Windows® XP, Windows Vista®, Windows 7, Windows 8, Windows 10, and Windows Server 2012.
Once the Xplained Pro MCU board is powered the green power LED will be lit and Atmel Studio will auto
detect which Xplained Pro MCU- and extension board(s) are connected. Atmel Studio will present
relevant information like datasheets and kit documentation. The kit landing page in Atmel Studio also has
the option to launch Atmel Software Framework (ASF) example applications for the kit. The SAM G55
device is programmed and debugged by the on-board Embedded Debugger and therefore no external
programmer or debugger tool is needed.
2.2. Design Documentation and Relevant Links
The following list contains links to the most relevant documents and software for the SAM G55 Xplained
Pro.
• Xplained products - Atmel Xplained evaluation kits are a series of easy-to-use evaluation kits for
Atmel microcontrollers and other Atmel products. For low pin-count devices the Xplained Nano
series provides a minimalistic solution with access to all I/O pins of the target microcontroller.
Xplained Mini kits are for medium pin-count devices and adds Arduino Uno compatible header
footprint and a prototyping area. Xplained Pro kits are for medium to high pin-count devices, they
features advanced debugging and standardized extensions for peripheral functions. All these kits
have on board programmers/debuggers which creates a set of low-cost boards for evaluation and
demonstration of features and capabilities of different Atmel products.
• Atmel Studio - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
• Atmel sample store - Atmel sample store where you can order samples of devices.
• 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.
• Atmel Data Visualizer - Atmel Data Visualizer is a program used for processing and visualizing
data. Data Visualizer can receive data from various sources such as the Embedded Debugger Data
Gateway Interface found on Xplained Pro boards and COM ports.
• Hardware Users Guide in PDF format - PDF version of this User Guide.
• Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings,
3D plots, layer plots etc.
®
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• SAM G55 Xplained Pro on the Atmel website - Atmel website link.
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3. Xplained Pro
Xplained Pro is an evaluation platform that provides the full Atmel microcontroller experience. The
platform consists of a series of Microcontroller (MCU) boards and extension boards, which are integrated
with Atmel Studio, have Atmel Software Framework (ASF) drivers and demo code, support data
streaming, and more. Xplained Pro MCU boards support a wide range of Xplained Pro extension boards,
which are connected through a set of standardized headers and connectors. Each extension board has
an identification (ID) chip to uniquely identify which boards are connected to an Xplained Pro MCU board.
This information is used to present relevant user guides, application notes, datasheets, and example
code through Atmel Studio.
3.1. Embedded Debugger
The SAM G55 Xplained Pro contains the Atmel Embedded Debugger (EDBG) for on-board debugging.
The EDBG is a composite USB device of three interfaces; a debugger, Virtual COM Port, and a Data
Gateway Interface (DGI).
Together with Atmel Studio, the EDBG debugger interface can program and debug the ATSAMG55J19.
On SAM G55 Xplained Pro, the SWD interface is connected between the EDBG and the ATSAMG55J19.
The Virtual COM Port is connected to a UART on the ATSAMG55J19 and provides an easy way to
communicate with the target application through terminal software. It offers variable baud rate, parity, and
stop bit settings. Note that the settings on the ATSAMG55J19 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 ATSAMG55J19. If the DTR signal
is not enabled the UART pins on the EDBG is kept in high-z (tristate) rendering the COM port
unusable. The DTR signal is set automatically by some terminal software, but it may have to be
manually enabled in your terminal.
The DGI consists of several physical interfaces for communication with the host computer.
Communication over the interfaces is bidirectional. It can be used to send events and values from the
ATSAMG55J19 or as a generic printf-style data channel. Traffic over the interfaces can be timestamped
on the EDBG for more accurate tracing of events. Note that timestamping imposes an overhead that
reduces maximal throughput. Atmel Data Visualizer is used to send and receive data through DGI.
The EDBG controls two LEDs on SAM G55 Xplained Pro; a power LED and a status LED. The table
below shows how the LEDs are controlled in different operation modes.
Table 3-1. EDBG LED Control
Operation mode Power LED Status LED
Normal operation Power LED is lit when power is
applied to the board.
Bootloader mode (idle) The power LED and the status LED blinks simultaneously.
Activity indicator, LED flashes
when any communication
happens to the EDBG.
Bootloader mode (firmware
upgrade)
The power LED and the status LED blinks in an alternating pattern.
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For further documentation on the EDBG, see the EDBG User Guide.
3.2. Hardware Identification System
All Xplained Pro compatible extension boards have an Atmel ATSHA204 CryptoAuthentication™ chip
mounted. 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 MCU board the information is read and
sent to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information,
code examples, and links to relevant documents. The table below shows the data fields stored in the ID
chip with example content.
Table 3-2. 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
3.3. Power Sources
The SAM G55 Xplained Pro kit can be powered by several power sources as listed in the table below.
Table 3-3. Power Sources for SAM G55 Xplained Pro
Power input Voltage requirements Current requirements Connector marking
External power 5V ±2% (±100mV) for
Embedded debugger
USB
USB host operation.
4.3V to 5.5V if USB host
operation is not
required.
4.4V to 5.25V (according
to USB spec.)
Recommended
minimum is 1A to be
able to provide enough
current for connected
USB devices and the
board itself.
Recommended
maximum is 2A due to
the input protection
maximum current
specification.
500mA (according to
USB spec.)
PWR
DEBUG USB
Target USB 4.4V to 5.25V (according
to USB spec.)
500mA (according to
USB spec.)
TARGET USB
The kit will automatically detect which power sources are available and choose which one to use
according to the following priority:
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1. External power.
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.
3.4. Xplained Pro Headers and Connectors
3.4.1. Xplained Pro Standard Extension Header
All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension header. Xplained Pro MCU
boards have male headers, while Xplained Pro extensions have their female counterparts. Note that all
pins are not always connected. All connected pins follow the defined pin-out description in the table
below.
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 MCU on Xplained Pro MCU boards directly.
Table 3-4. Xplained Pro Standard Extension Header
Pin number Name Description
1 ID Communication line to the ID chip on an extension board
2 GND Ground
3 ADC(+) Analog to digital converter, alternatively positive part of differential
ADC
4 ADC(-) Analog to digital converter, alternatively negative part of differential
ADC
5 GPIO1 General purpose I/O
6 GPIO2 General purpose I/O
7 PWM(+) Pulse width modulation, alternatively positive part of differential
PWM
8 PWM(-) Pulse width modulation, alternatively negative part of differential
PWM
9 IRQ/GPIO Interrupt request line and/or general purpose I/O
10 SPI_SS_B/
Slave select for SPI and/or general purpose I/O
GPIO
11 I2C_SDA Data line for I2C interface. Always implemented, bus type.
12 I2C_SCL Clock line for I2C interface. Always implemented, bus type.
13 UART_RX Receiver line of target device UART
14 UART_TX Transmitter line of target device UART
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Pin number Name Description
15 SPI_SS_A Slave select for SPI. Should preferably be unique.
16 SPI_MOSI Master out slave in line of serial peripheral interface. Always
17 SPI_MISO Master in slave out line of serial peripheral interface. Always
18 SPI_SCK Clock for serial peripheral interface. Always implemented, bus type.
19 GND Ground
20 VCC Power for extension board
3.4.2. Xplained Pro Power Header
The power header can be used to connect external power to the SAM G55 Xplained Pro kit. The kit will
automatically detect and switch to any external power if supplied. The power header can also be used as
supply for external peripherals or extension boards. Care must be taken not to exceed the total current
limitation of the on-board regulator when using the 3.3V pin.
Table 3-5. Xplained Pro Power Header
Pin number Pin name Description
1 VEXT_P5V0 External 5V input
implemented, bus type.
implemented, bus type.
2 GND Ground
3 VCC_P5V0 Unregulated 5V (output, derived from one of the input sources)
4 VCC_P3V3 Regulated 3.3V (output, used as main power supply for the kit)
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4. Hardware User Guide
4.1. Connectors
This chapter describes the implementation of the relevant connectors and headers on SAM G55 Xplained
Pro and their connection to the ATSAMG55J19. The tables of connections in this chapter also describes
which signals are shared between the headers and on-board functionality.
4.1.1. Xplained Pro Standard Extension Headers
The SAM G55 Xplained Pro headers EXT1, EXT3, and EXT4 offer access to the I/O of the microcontroller
in order to expand the board by connecting extensions to the board. All these headers comply with the
Xplained Pro standard extension header specification. The headers have a pitch of 2.54mm.
Table 4-1. Extension Header EXT1
Pin on EXT1 SAM G55 pin SAM G55 Peripheral
Function
1 [ID] - - Communication line to ID chip on
2 [GND] - - GND
3 [ADC(+)] PA17 AD0
4 [ADC(-)] PA18 AD1
5 [GPIO1] PA26 GPIO UART0 RTS
6 [GPIO2] PA25 GPIO UART0 CTS
7 [PWM(+)] PA00 TIOA0
8 [PWM(-)] PA23 TIOA1
9 [IRQ/GPIO] PA24 WKUP11
10 [SPI_SS_B/GPIO] PA29 GPIO
11 [TWI_SDA] PB10 TWD4
12 [TWI_SCL] PB11 TWCK4
13 [USART_RX] PA09 USART RXD (URXD0)
Shared Functionality
extension board.
14 [USART_TX] PA10 USART TXD (UTXD0)
15 [SPI_SS_A] PA11 SPI NPCS0
16 [SPI_MOSI] PA13 SPI MOSI EXT3 connector
17 [SPI_MISO] PA12 SPI MISO EXT3 connector
18 [SPI_SCK] PA14 SPI SCK EXT3 connector
19 [GND] - - GND
20 [VCC] - - VCC
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Table 4-2. Extension Header EXT3
Pin on EXT3 SAM G55 pin SAM G55 Shared
Shared Functionality
Functionality
1 [ID] - - Communication line to ID chip on
extension board.
2 [GND] - - GND
3 [ADC(+)] PA19 AD2
4 [ADC(-)] PA20 AD3
5 [GPIO1] PA30 GPIO
6 [GPIO2] PB15 GPIO
7 [PWM(+)] PA01 TIOB0
8 [PWM(-)] PB13 GPIO
9 [IRQ/GPIO] PB03 WKUP13
10 [SPI_SS_B/GPIO] PA15 GPIO
11 [TWI_SDA] PB08 TWD4
12 [TWI_SCL] PB09 TWCK4
13 [USART_RX] PB01 USART6 RXD EDBG (DGI USART)
14 [USART_TX] PB00 USART0 TXD EDBG (DGI USART)
15 [SPI_SS_A] PA05 SPI NPCS1
16 [SPI_MOSI] PA13 SPI MOSI EXT1 connector (SPI MOSI)
17 [SPI_MISO] PA12 SPI MISO EXT1 connector (SPI MISO)
18 [SPI_SCK] PA14 SPI SCK EXT1 connector (SPI SCK)
19 [GND] - - GND
20 [VCC] - - VCC
Table 4-3. Extension Header EXT4
Pin on EXT4 SAM G55 pin SAM G55 Peripheral
Shared Functionality
Function
1 [ID] - - Communication line to ID chip on
extension board.
2 [GND] - - GND
3 [ADC(+)] - -
4 [ADC(-)] - -
5 [GPIO1] PA31 GPIO PCK2
6 [GPIO2] - -
7 [PWM(+)] - -
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Pin on EXT4 SAM G55 pin SAM G55 Peripheral
Shared Functionality
Function
8 [PWM(-)] - -
9 [IRQ/GPIO] PB14 -
10 [SPI_SS_B/GPIO] - -
11 [TWI_SDA] PB10 TWD4 EDBG and EXT1 connector
(TWI)
12 [TWI_SCL] PB11 TWCK1 EDBG and EXT1 connector
(TWI)
13 [USART_RX] - -
14 [USART_TX] - -
15 [SPI_SS_A] - -
16 [SPI_MOSI] - -
17 [SPI_MISO] - -
18 [SPI_SCK] - -
19 [GND] - - GND
20 [VCC] - - VCC
4.1.2. High Speed TWI Interface
The extension connector marked with "Host I2C" targets I2C hosts that want to connect to the SAM G55
high speed I2C slave interface. Besides I2C communication, a GPIO and the SAM G55 reset are
available. The GPIO can serve as a IRQ to the host and the reset can be used by the host to reset the
SAM G55.
Table 4-4. SAM G55 High Speed I2C Slave Interface
Pin on I2C
Pin on SAM G55 SAM G55
Connector
1 - -
2 PA01 NCHG TIOB0
3 PA16 GPIO WKUP7
4 RESET Reset
5 PA03 TWD0
6 PA04 TWCK0
7 - - VCC
Shared Functionality
Peripheral
Function
8 - - GND
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4.1.3. Current Measurement Header
An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of
the SAM G55 Xplained Pro. All power to the ATSAMG55J19 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
ATSAMG55J19 to be powered through its I/O pins. This may cause permanent damage to the
device.
4.2. Peripherals
4.2.1. Crystals
The SAM G55 Xplained Pro kit contains a 32kHz crystal mounted on it along with a footprint for a second
crystal. The crystal circuit has a cut-strap next to it which can measure the oscillator safety factor. This is
performed by cutting the strap and adding a resistor across the strap. More information about oscillator
allowance and safety factor can be found in application note AVR4100.
Table 4-5. External 32.768kHz Crystal
Pin on SAM G55 Function
PA07 XIN32
PA08 XOUT32
The additional crystal's pins are shared with the TWI lines in EXT3. Remove the 0Ω resistors R307 and
R306 before mounting this crystal.
Table 4-6. Footprint for Additional Crystal
Pin on SAM G55 Function
PB09 XIN
PB08 XOUT
4.2.2. Mechanical Buttons
The SAM G55 Xplained Pro contains two mechanical buttons. One button is the RESET button
connected to the SAM G55 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 4-7. Mechanical Buttons
Pin on SAM G55 Silkscreen Text
NRST RESET
PA02 SW0
4.2.3. LED
An yellow LED is available on the SAM G55 Xplained Pro board. The LED can be activated by driving the
connected I/O line to GND.
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Table 4-8. LED Connections
Pin on SAM G55 LED
PA06 Yellow LED0
4.2.4. USB
There is an USB available on the SAM G55 Xplained Pro board that can act as both host and device. It
has a micro usb connector with the silk screen TARGET USB.
Table 4-9. USB Connections
Pin on SAM G55 USB
PA22 DP
PA21 DM
PB02 USB ID
4.3. Embedded Debugger Implementation
The SAM G55 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and
debug the ATSAMG55J19 using Serial Wire Debug (SWD). The Embedded debugger also provides a
Virtual Com port interface over UART, an Atmel Data Gateway Interface over UART and TWI, and it
monitors four of the SAM G55 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) uses two pins to communicate with the target. For further information on
how to use the programming and debugging capabilities of the EDBG, see the EDBG user guide.
Table 4-10. SWD Connections
Pin on SAM G55 Function
PB07 SWD clock
PB06 SWD data
PB05 SWD trace data
4.3.2. Virtual COM Port
The Embedded Debugger act as a Virtual Com Port gateway by using one of the ATSAMG55J19 UARTs.
For further information about using the Virtual COM port see the EDBG user guide.
Table 4-11. Virtual COM Port Connections
Pin on SAM G55 Function
PA28 UART TXD (SAM G55 TX line)
PA27 UART RXD (SAM G55 RX line)
4.3.3. Atmel Data Gateway Interface
The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either UART or TWI.
The DGI can be used to send a variety of data from the SAM G55 to the host PC. For further information
about using the DGI interface see the EDBG user guide.
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Table 4-12. DGI Interface Connections Using USART
Pin on SAM G55 Function
PB00 USART TXD (SAM G55 TX line)
PB01 USART RXD (SAM G55 RX line)
PB13 USART CLK
Table 4-13. DGI Interface Connections Using TWI
Pin on SAM G55 Function
PB10 SDA (Data line)
PB11 SCL (Clock line)
Four GPIO lines are connected to the Embedded Debugger. The EDBG can monitor these lines and time
stamp pin value changes. This enables to accurately time stamp events in the SAM G55 application code.
For further information about configuring and using the GPIO monitoring features see the EDBG user
guide.
Table 4-14. GPIO Lines Connected to EDBG
Pin on SAM G55 Function
PA02 GPIO0
PA06 GPIO1
PA24 GPIO2
PB14 GPIO3
4.4. Jumper Description
The SAM G55 Xplained Pro contains two jumpers that can be used to configure the functionality of the
board. You can locate the jumpers in the kit overview picture at the start of the user guide.
Related Links
Kit Overview on page 3
4.4.1. Chip Erase Jumper
When this jumper is placed on the CHIPERASE header the SAM G55 performs a chip erase after the
next power toggle of the board. For normal operation, this jumper should be placed such that only one of
the pins of the CHIPERASE header is connected and no contact is made between the two pins.
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5. Appendix
5.1. Getting Started with IAR
IAR Embedded Workbench® for ARM® is a proprietary high efficiency compiler not based on GCC.
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 the
programming and debugging to work.
The following steps will explain how to get your project ready for programming and debugging:
1. Make sure you have opened the project you want to configure. Open the OPTIONS dialog for the
project.
2. In the category General Options, select the Target tab. Select the device for the project or, if not
listed, the core of the device.
3. In the category Debugger, select the Setup tab. Select CMSIS DAP as the driver.
4. In the category Debugger, select the Download tab. Check the check box for Use flash loader(s)
option.
5. In the category Debugger > CMSIS DAP, 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 5-1. Select Target Device
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Figure 5-2. Select Debugger
Figure 5-3. Configure Flash Loader
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Figure 5-4. Configure Reset
Figure 5-5. Configure Interface
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5.2. Connecting a SAM-ICE to an Xplained Pro Board
Xplained Pro kits featuring a 10-pin 50mil debug connector can use external debug tools like SAM-ICE
or Atmel-ICE instead of the built-in EDBG. Devices using SWD interface on-board will have a connector
with the pinout compatible with the Cortex Debug Connector.
You can connect the SAM-ICE 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 5-1. 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)
7 (Not used)
8 (Not used)
™
(1)
9 (Not used)
10 (RESET) 15 (RESET)
Note:
1. Optional, if the device has this functionality.
Figure 5-6. SAM-ICE using a Squid Cable
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Figure 5-7. SAM-ICE using an Atmel-ICE Adapter
Important:
If contention with the on-board EDBG occur, 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.
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6. Hardware Revision History and Known Issues
6.1. Identifying Product ID and Revision
The revision and product identifier of 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.
By connecting an Xplained Pro MCU board to a computer with Atmel Studio running, an information
window will pop up. The first six digits of the serial number, which is listed under kit details, contain the
product identifier and revision. Information about connected Xplained Pro extension boards will also
appear in the Atmel Kit's window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits will print the
identifier and revision 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 QR-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 SAM G55 Xplained Pro is A09-2393.
6.2. Revision 3
Revision 3 of SAM G55 Xplained Pro is the initial released version, there are no known issues.
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7. Document Revision History
Doc. rev Date Comment
42389B 04/2016 Added appendix
42389A 02/2015 Initial Document Release
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8. Evaluation Board/Kit Important Notice
This evaluation board/kit is intended for use for FURTHER ENGINEERING, DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY. It is not a finished product and may not
(yet) comply with some or any technical or legal requirements that are applicable to finished products,
including, without limitation, directives regarding electromagnetic compatibility, recycling (WEEE), FCC,
CE or UL (except as may be otherwise noted on the board/kit). Atmel supplied this board/kit "AS IS",
without any warranties, with all faults, at the 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 handling or use of the goods. Due to the open construction of the
product, it is the user's responsibility to take any and all appropriate precautions with regard to
electrostatic discharge and any other technical or legal concerns.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER USER NOR ATMEL
SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES.
No license is granted under any patent right or other intellectual property right of Atmel covering or
relating to any machine, process, or combination in which such Atmel products or services might be or
are used.
Mailing Address:
Atmel Corporation
1600 Technology Drive
San Jose, CA 95110
USA
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Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com
©
2016 Atmel Corporation. / Rev.: Atmel-42389B-SAM-G55-Xplained-Pro_User Guide-04/2016
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