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SMART ARM-based Microcontrollers
SAM4E Xplained Pro
USER GUIDE
Preface
The Atmel® SAM4E Xplained Pro evaluation kit is a hardware platform to
evaluate the ATSAM4E16E microcontroller.
Supported by the Atmel Studio integrated development platform, the kit
provides easy access to the features of the Atmel ATSAM4E16E 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 ATSAM4E16E.
The Xplained Pro extension series evaluation kits offers additional
peripherals to extend the features of the board and ease the development of
custom designs.
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Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................4
1.1. Features....................................................................................................................................... 4
1.2. Kit Overview................................................................................................................................. 4
2. Getting Started...........................................................................................................6
2.1. Xplained Pro Quick Start.............................................................................................................. 6
2.2. Design Documentation and Relevant Links................................................................................. 6
3. Xplained Pro.............................................................................................................. 7
3.1. Embedded Debugger................................................................................................................... 7
3.2. Hardware Identification System....................................................................................................7
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 LCD Extension Connector......................................................................10
3.4.3. Xplained Pro Power Header........................................................................................ 12
4. Hardware User Guide..............................................................................................13
4.1. Connectors................................................................................................................................. 13
4.1.1. Xplained Pro Extension Headers.................................................................................13
4.1.2. LCD Extension Connector........................................................................................... 15
4.1.3. Chip Erase Header...................................................................................................... 17
4.1.4. Current Measurement Header..................................................................................... 17
4.1.5. Other Headers............................................................................................................. 17
4.2. Peripherals................................................................................................................................. 18
4.2.1. SRAM.......................................................................................................................... 18
4.2.2. NAND Flash.................................................................................................................19
4.2.3. Ethernet....................................................................................................................... 20
4.2.4. SD Card Connector..................................................................................................... 21
4.2.5. CAN............................................................................................................................. 21
4.2.6. USB............................................................................................................................. 22
4.2.7. Crystals........................................................................................................................22
4.2.8. Mechanical Buttons..................................................................................................... 22
4.2.9. LED..............................................................................................................................23
4.3. Embedded Debugger Implementation........................................................................................23
4.3.1. Serial Wire Debug........................................................................................................23
4.3.2. Virtual COM Port..........................................................................................................23
4.3.3. Atmel Data Gateway Interface.....................................................................................24
5. Kit Specific Data...................................................................................................... 25
6. Hardware Revision History and Known Issues........................................................26
6.1. Identifying Product ID and Revision........................................................................................... 26
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6.2. Revision 3...................................................................................................................................26
6.2.1. 12MHz Crystal Selection............................................................................................. 26
7. Appendix..................................................................................................................27
7.1. Getting Started with IAR.............................................................................................................27
8. Document Revision History..................................................................................... 30
9. Evaluation Board/kit Important Notice..................................................................... 31
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1. Introduction
1.1. Features
• Atmel ATSAM4E16E 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
• Digital I/O
– Two mechanical buttons (user, reset and force wakeup button)
– One user LED
– Three extension headers
– Xplained Pro LCD extension connector
• One CAN-bus
• 10/100-T Ethernet
• 2Gb 8-bit NAND Flash
• Dual 512K 8-bit SRAM
• Target USB, device mode
• Three possible power sources:
– External power
– Embedded debugger USB
– Target USB
• 12MHz crystal
• 32kHz crystal
1.2. Kit Overview
The Atmel SAM4E Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel
ATSAM4E16E.
The kit offers a set of features that enables the ATSAM4E16E user to get started using the ATSAM4E16E
peripherals right away and to get an understanding of how to integrate the device in their own design.
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Figure 1-1 SAM4E Xplained Pro Evaluation Kit Overview
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2. Getting Started
2.1. Xplained Pro Quick Start
Three 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 Atmel SAM4E Xplained Pro 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, and Windows 8.
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 SAM4E
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 SAM4E Xplained Pro:
• Xplained Pro products - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation
kits for Atmel microcontrollers and other Atmel products. It consists of a series of low cost MCU
boards for evaluation and demonstration of features and capabilities of different MCU families.
• 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.
• Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings,
3D plots, layer plots, etc.
• Hardware Users Guide in PDF format - PDF version of this User Guide.
• SAM4S Xplained Pro in the Atmel store - Atmel Store 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 SAM4E 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 ATSAM4E16E. On
SAM4E Xplained Pro, the SWD interface is connected between the EDBG and the ATSAM4E16E.
The Virtual COM Port is connected to a UART on the ATSAM4E16E 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 ATSAM4E16E must match the settings given in the terminal
software.
Note: If not set automatically, data terminal ready (DTR) must be set in the terminal software.
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
ATSAM4E16E 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 SAM4E Xplained Pro; a power LED and a status LED. Table 3-1 EDBG
LED Control on page 7 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.
Bootloader mode (firmware
upgrade)
For further documentation on the EDBG, see the EDBG User Guide.
The power LED and the status LED blinks in an alternating pattern.
Activity indicator, LED flashes
when any communication
happens to the EDBG.
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.
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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. Table 3-2 Xplained Pro ID Chip Content on page 8
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 SAM4E Xplained Pro kit can be powered by several power sources listed in Table 3-3 Power
Sources for SAM4E Xplained Pro on page 8.
Table 3-3 Power Sources for SAM4E Xplained Pro
Power input Voltage requirements Current requirements Connector marking
External power 5V ±2% (±100mV) for
USB host operation.
4.3V to 5.5V if USB host
operation is not
required.
Recommended
minimum is 1A to be
able to provide enough
current for connected
USB devices and the
PWR
board itself.
Recommended
maximum is 2A due to
the input protection
maximum current
specification.
Embedded debugger
USB
Target USB 4.4V to 5.25V (according
4.4V to 5.25V (according
to USB spec.)
to USB spec.)
500mA (according to
USB spec.)
500mA (according to
USB spec.)
DEBUG USB
TARGET USB
The kit will automatically detect which power sources are available and choose which one to use
according to the following priority:
1. External power.
2. Embedded Debugger USB.
3. Target USB.
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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 Table 3-4
Xplained Pro Standard Extension Header on page 9.
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
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
implemented, bus type.
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Pin number Name Description
17 SPI_MISO Master in slave out line of serial peripheral interface. Always
implemented, bus type.
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 LCD Extension Connector
The LCD connector provides the ability to connect to display extensions that have a parallel interface.
The connector implements signals for a MCU parallel bus interface and a LCD controller interface as well
as signals for a touch controller. The connector pin-out definition is shown in Table 3-5 Xplained Pro LCD
Connector on page 10. Note that usually only one display interface is implemented, either the LCD
controller or the MCU bus interface.
A FPC/FFC connector with 50 pins and 0.5mm pitch is used for the LCD connector. The connector
XF2M-5015-1A from Omron is used on several Xplained Pro designs and can be used as a reference.
Table 3-5 Xplained Pro LCD Connector
Pin number Name RGB interface description MCU interface description
1 ID Communication line to the ID chip on an extension board
2 GND Ground
3 D0 Data line
4 D1 Data line
5 D2 Data line
6 D3 Data line
7 GND Ground
8 D4 Data line
9 D5 Data line
10 D6 Data line
11 D7 Data line
12 GND Ground
13 D8 Data line
14 D9 Data line
15 D10 Data line
16 D11 Data line
17 GND Ground
18 D12 Data line
19 D13 Data line
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Pin number Name RGB interface description MCU interface description
20 D14 Data line
21 D15 Data line
22 GND Ground
23 D16 Data line
24 D17 Data line
25 D18 Data line
26 D19 Data line
27 GND Ground
28 D20 Data line
29 D21 Data line
30 D22 Data line
31 D23 Data line
32 GND Ground
33 PCLK / CMD DATA
SEL
Pixel clock Display RAM select. One
address line of the MCU for
displays where it is possible to
select either register or data
interface.
34 VSYNC / CS Vertical Synchronization Chip select
35 HSYNC / WE Horizontal Synchronization Write enable signal
36 DATA ENABLE /
Data enable signal Read enable signal
RE
37 SPI SCK Clock for serial peripheral interface
38 SPI MOSI Master out slave in of serial peripheral interface
39 SPI MISO Master in slave out of serial peripheral interface
40 SPI SS Slave select for serial peripheral interface. Preferably a dedicated
pin.
41 ENABLE Display enable
42 I2C SDA I2C data
43 I2C SCL I2C clock
44 IRQ1 Interrupt 1
45 IRQ2 Interrupt 2
46 PWM Backlight control
47 RESET Extension reset
48 VCC 3.3V power supply for extension board
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Pin number Name RGB interface description MCU interface description
49 VCC 3.3V power supply for extension board
50 GND Ground
3.4.3. Xplained Pro Power Header
The power header can be used to connect external power to the SAM4E 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 3-6 Xplained Pro Power Header
Pin number Pin name Description
1 VEXT_P5V0 External 5V input
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 SAM4E Xplained
Pro and their connection to the ATSAM4E16E. 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 Extension Headers
The SAM4E Xplained Pro headers EXT1, EXT2, and EXT3 offers access to the I/O of the microcontroller
in order to expand the board e.g. by connecting extensions to the board. These headers all comply with
the standard extension header specified in Xplained Pro Standard Extension Header on page 9. All
headers have a pitch of 2.54mm.
Table 4-1 Extension Header EXT1
Pin on EXT1 SAM4E pin Function Shared functionality
1 - Communication
2 - GND
3 PB2 AFE AD0
line to ID chip on
extension board
4 PB3 AFE AD1
5 PA24 GPIO
6 PA25 GPIO
7 PA15 TIOA1
8 PA16 TIOB1
9 PA11 WKUP7
10 PD25 GPIO
11 PA3 TWD0 EXT2, EXT3, LCD connector, and
EDBG
12 PA4 TWCK0 EXT2, EXT3, LCD connector, and
EDBG
13 PA21 RXD1
14 PA22 TXD1
15 PB14 NPCS1
16 PA13 MOSI EXT2 and EXT3
17 PA12 MISO EXT2 and EXT3
18 PA14 SPCK EXT2 and EXT3
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Pin on EXT1 SAM4E pin Function Shared functionality
19 - GNC
20 - VCC
Table 4-2 Extension Header EXT2
Pin on EXT2 SAM4E pin Function Shared functionality
1 - Communication
line to ID chip on
extension board
2 - GND
3 - -
4 - -
5 PE2 GPIO VBUS Sense and EDBG DGI
6 PB5 GPIO EDBG TRACESWO
7 PD21 PWMHI1
8 - -
9 PD29 GPIO ETHERNET
10 PB4 GPIO
11 PA3 TWD0 EXT1, EXT3, LCD connector, and
EDBG
12 PA4 TWCK0 EXT1, EXT3, LCD connector, and
EDBG
13 PA5 URXD1 EXT3
14 PA6 UTXD1 EXT3
15 PD23 GPIO
16 PA13 MOSI EXT1 and EXT3
17 PA12 MISO EXT1 and EXT3
18 PA14 SPCK EXT1 and EXT3
19 - GND
20 - VCC
Table 4-3 Extension Header EXT3
Pin on EXT3 SAM4E pin Function Shared functionality
1 - Communication
line to ID chip on
extension board
2 - GND
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Pin on EXT3 SAM4E pin Function Shared functionality
3 PA17 AD0
4 PC13 AD6
5 PD28 GPIO
6 PD17 GPIO
7 PD20 PWMH0
8 PD24 PWML0
9 PE1 GPIO
10 PD26 GPIO
11 PA3 TWD0 EXT1, EXT2, LCD connector, and
EDBG
12 PA4 TWCK0 EXT1, EXT2, LCD connector, and
EDBG
13 PA5 URXD1 EXT2
14 PA6 UTXD1 EXT2
15 PD30 GPIO
16 PA13 MOSI EXT1 and EXT2
17 PA12 MISO EXT1 and EXT2
18 PA14 SPCK EXT1 and EXT2
19 - GND
20 - VCC
4.1.2. LCD Extension Connector
Extension connector EXT4 is a special connector for LCD displays. The physical connector is a TE
Connectivity 5-1734839-0 FPC connector.
Table 4-4 LCD Display Connector EXT4
Pin on EXT4 SAM4E pin Function Shared functionality
1 [ID] - Communication
2 [GND] - GND
3 [D0] PC0 D0 SRAM, NAND, and EBI spare header
4 [D1] PC1 D1 SRAM, NAND, and EBI spare header
line to ID chip on
extension board
5 [D2] PC2 D2 SRAM, NAND, and EBI spare header
6 [D3] PC3 D3 SRAM, NAND, and EBI spare header
7 [GND] - GND
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Pin on EXT4 SAM4E pin Function Shared functionality
8 [D4] PC4 D4 SRAM, NAND, and EBI spare header
9 [D5] PC5 D5 SRAM, NAND, and EBI spare header
10 [D6] PC6 D6 SRAM, NAND, and EBI spare header
11 [D7] PC7 D7 SRAM, NAND, and EBI spare header
12 [GND] - GND
13 [D8] - -
14 [D9] - -
15 [D10] - -
16 [D11] - -
17 [GND] - GND
18 [D12] - -
19 [D13] - -
20 [D14] - -
21 [D15] - -
22 [GND] - GND
23 [D16] - -
24 [D17] - -
25 [D18] - -
26 [D19] - -
27 [GND] - GND
28 [D20] - -
29 [D21] - -
30 [D22] - -
31 [D23] - -
32 [GND] - GND
33 [PCLK /
PE5 GPIO
CMD_DATA_SEL]
34 [VSYNC / CS] PA23 GPIO EBI spare header
35 [HSYNC / WE] PC8 NWE SRAM and EBI spare header
36 [DATA
PC11 NRD SRAM and EBI spare header
ENABLE / RE]
37 [SPI SCK] - -
38 [SPI MOSI] - -
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Pin on EXT4 SAM4E pin Function Shared functionality
39 [SPI MISO] - -
40 [SPI SS] - -
41 [DISP ENABLE] PE3 GPIO EDBG DGI and EBI spare header
42 [TWI SDA] PA3 TWD0 EXT1, EXT2, EXT3, and EDBG
43 [TWI SCL] PA4 TWCK0 EXT1, EXT2, EXT3, and EDBG
44 [IRQ1] PE4 IRQ1 IRQ2 and EDBG DGI
45 [IRQ2] PE4 IRQ2 IRQ1 and EDBG DGI
46 [PWM] PD27 PWML3 EDBG DGI
47 [RESET] PE0 GPIO
48 [VCC] - VCC_P3V3
49 [VCC] - VCC_P3V3
50 [GND] - GND
4.1.3. Chip Erase Header
There is a 1x2 pin-header that is connected to the SAM4E chip erase pin (PB12) and 3V3 marked
ERASE as shown in Figure 1-1 SAM4E Xplained Pro Evaluation Kit Overview on page 5. This header
can be used to chip erase the SAM4E by placing a jumper on the header and toggle the power to the
board. After the power is toggled the jumper should be removed. Using the chip erase jumper is the only
way to erase a chip with the security bit set, an application that immediately sets invalid clock options or
goes into deep sleep without any wake-up sources.
4.1.4. Current Measurement Header
An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of
the SAM4E Xplained Pro. All power to the ATSAM4E16E 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
ATSAM4E16E to be powered through its I/O pins. This may cause permanent damage to the
device.
4.1.5. Other Headers
In addition to the Xplained Pro standard connectors, SAM4E Xplained Pro has one header with spare
signals that offers access to the I/O of the microcontroller which are otherwise not easily available
elsewhere or might be favourable to have collected toghether. The headers has a pitch of 2.54mm.
Table 4-5 EBI Spare Signal Header
Pin on header SAM4E pin Function Shared functionality
1 PC0 Data line 0 SRAM, NAND, and LCD connector
2 PC1 Data line 1 SRAM, NAND, and LCD connector
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Pin on header SAM4E pin Function Shared functionality
3 PC2 Data line 2 SRAM, NAND, and LCD connector
4 PC3 Data line 3 SRAM, NAND, and LCD connector
5 PC4 Data line 4 SRAM, NAND, and LCD connector
6 PC5 Data line 5 SRAM, NAND, and LCD connector
7 PC6 Data line 6 SRAM, NAND, and LCD connector
8 PC7 Data line 7 SRAM, NAND, and LCD connector
9 PA23 CS LCD connector
10 PE3 DISPLAY ENABLE EDBG DGI and LCD connector
11 PC11 RE SRAM and LCD connector
12 PC8 WE SRAM and LCD connector
13 - GND
14 - VCC
4.2. Peripherals
4.2.1. SRAM
The SAM4E Xplained Pro features two external ISSI IS61WV5128BLL-10TLI, 512Kx8, 10ns, SRAMs,
SRAM0 and SRAM1. SRAM0 is connected to chip select NCS1 and SRAM1 is connected to chip select
NCS3. SRAM access can be configured in the Static Memory Controller in the SAM4E.
Table 4-6 SRAM Connections on page 18 lists all I/O-lines connected to the SRAMs.
Table 4-6 SRAM Connections
Pin on SAM4E Function SRAM function Shared functionality
PC0 D0 Data line 0 NAND, LCD connector, and EBI spare
PC1 D1 Data line 1 NAND, LCD connector, and EBI spare
PC2 D2 Data line 2 NAND, LCD connector, and EBI spare
PC3 D3 Data line 3 NAND, LCD connector, and EBI spare
PC4 D4 Data line 4 NAND, LCD connector, and EBI spare
PC5 D5 Data line 5 NAND, LCD connector, and EBI spare
header
header
header
header
header
header
PC6 D6 Data line 6 NAND, LCD connector, and EBI spare
header
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Pin on SAM4E Function SRAM function Shared functionality
PC7 D7 Data line 7 NAND, LCD connector, and EBI spare
header
PC18 A0 Address line 0
PC19 A1 Address line 1
PC20 A2 Address line 2
PC21 A3 Address line 3
PC22 A4 Address line 4
PC23 A5 Address line 5
PC24 A6 Address line 6
PC25 A7 Address line 7
PC26 A8 Address line 8
PC27 A9 Address line 9
PC28 A10 Address line 10
PC29 A11 Address line 11
PC30 A12 Address line 12
PC31 A13 Address line 13
PA18 A14 Address line 14
PA19 A15 Address line 15
PA20 A16 Address line 16
PA0 A17 Address line 17
PA1 A18 Address line 18
PD18 NCS1 #Chip Enable (on
PD19 NCS3 #Chip Enable (on
PC8 NWE #Write Enable LCD Connector and EBI spare header
PC11 NRD #Output Enable LCD Connector and EBI spare header
4.2.2. NAND Flash
The SAM4E Xplained Pro kit has one external Micron MT29F2G08ABAEAWP:E 2Gb NAND flash
connected to the external bus interface of the SAM4E. The NAND flash is connected to chip select NCS0.
NAND flash access can be configures in the Static Memory Controller in the SAM4E.
The R/B (read/busy) signal from the NAND flash is connected to PB12, which is configured as SAM4E
chip erase by default. In order to utilize the R/B signal PB12 must be configured as a normal I/O pin in the
CCFG_SYSIO register located in the MATRIX module and the internal pull-up has to be enabled. For
more information see the SAM4E datasheet.
SRAM0)
SRAM1)
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Table 4-7 NAND Flash Connections on page 20 lists all I/O-lines connected to the NAND flash.
Table 4-7 NAND Flash Connections
SAM4E pin Function NAND Flash
Shared functionality
function
PC0 D0 SRAM, LCD connector, and EBI spare
header
PC1 D1 SRAM, LCD connector, and EBI spare
header
PC2 D2 SRAM, LCD connector, and EBI spare
header
PC3 D3 SRAM, LCD connector, and EBI spare
header
PC4 D4 SRAM, LCD connector, and EBI spare
header
PC5 D5 SRAM, LCD connector, and EBI spare
header
PC6 D6 SRAM, LCD connector, and EBI spare
header
PC7 D7 SRAM, LCD connector, and EBI spare
header
PC17 NANDCLE CLE
PC16 NANDALE ALE
PC10 NANDWE #Write Enable
PC9 NANDOE #Read Enable
PC14 NCS0 #Chip Enable
PB12 GPIO Ready/#Busy ERASE pin
4.2.3. Ethernet
The ATSAM4E16E has a built in 10/100Mbps Ethernet IEEE® 802.3 MAC with an MII interface. SAM4E
Xplained Pro connects the MAC to a Micrel KSZ8081MNXIA physical-layer transceiver, which is
connected to one RJ45 Ethernet connector.
Every SAM4E Xplained Pro kit is assigned a unique MAC48 address that can be used in an application.
This address is printed on the label on the bottom side of the kit and stored in the EDBG. For more
information, see Identifying Product ID and Revision on page 26 and Kit Specific Data on page 25.
Table 4-8 Ethernet Connections on page 20 lists all I/O-lines connected to the Ethernet PHY.
Table 4-8 Ethernet Connections
SAM4E pin Function Ethernet function Shared functionality
PD0 GTXCK TXC
PD1 GTXEN TXEN
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SAM4E pin Function Ethernet function Shared functionality
PD2 GTX0 TXD0
PD3 GTX1 TXD1
PD4 GRXDV RXDV/CONFIG2
PD5 GRX0 RXD0/DUPLEX
PD6 GRX1 RXD1/PHYAD2
PD7 GRXER RXER/ISO
PD8 GMDC MDC
PD9 GMDIO MDIO
PD10 GCRS CRS/CONFIG1
PD11 GRX2 RXD2/PHYAD1
PD12 GRX3 RXD3/PHYAD0
PD13 GCOL COL/CONFIG0
PD14 GRXCK RXC/B-CAST_OFF
PD15 GTX2 TXD2
PD16 GTX3 TXD3
PD29 GPIO INTRP/
PD31 GPIO #RST
4.2.4. SD Card Connector
The SAM4E Xplained Pro kit has one SD card connector which is connected to High Speed Multimedia
Card Interface (HSMCI) of the SAM4E
Table 4-9 SD Card Connections on page 21 lists all I/O-lines connected to the SD card connector.
Table 4-9 SD Card Connections
SAM4E pin Function SD card function Shared functionality
PA30 MCDA0 DAT0
PA31 MCDA1 DAT1
PA26 MCDA2 DAT2
PA27 MCDA3 DAT3
PA29 MCCK CLK
PA28 MCCDA CMD
EXT2 GPIO
#NAND_TREE
4.2.5. CAN
The SAM4E Xplained Pro kit has CAN1 connected to the an Infineon TLE7250GVIOXUMA1 high speed
CAN transceiver.
Table 4-10 CAN Connections on page 22 lists the I/O-lines connected to the CAN transceiver.
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Table 4-10 CAN Connections
SAM4E pin Function CAN function Shared functionality
PC12 CANRX1 CAN RX
PC15 CANTX1 CAN TX
4.2.6. USB
The SAM4E Xplained Pro has a Micro-USB receptable for use with the SAM4E USB device module
labeled "target usb" on the board. To be able to detect when a USB cable is connected, a GPIO (PE2) is
used to detect the VBUS voltage on the connector.
Table 4-11 USB Connections on page 22 lists all I/O-lines connected to the USB connector.
Table 4-11 USB Connections
SAM4E pin Function USB function Shared functionality
PE2 GPIO VBUS detection EXT2 GPIO
PB10 DFSD_N USB D-
PB11 DFSD_P USB D+
4.2.7. Crystals
The SAM4E Xplained Pro kit contains two crystals that can be used as clock sources for the SAM4E
device. Each crystal has a cut-strap next to it 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 can be found in the Atmel application note AVR4100: Selecting and testing
32kHz crystal oscillators for Atmel AVR microcontrollers.
Table 4-12 External 32.768kHz Crystal
Pin on SAM4E Function
PA7 XIN32
PA8 XOUT32
Table 4-13 External 12MHz Crystal
Pin on SAM4E Function
PB9 XIN
PB8 XOUT
Important: Load capacitor calculation, selection and verification was done wrong in the design
of the SAM4E Xplained Pro evaluation kit, see the errata section for more information.
Related Links
12MHz Crystal Selection on page 26
4.2.8. Mechanical Buttons
SAM4E Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the
SAM4E reset line and the other is a generic user configurable button. When a button is pressed it will
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drive the I/O line to GND. Note that in order to read the button status the internal pull-up must be enabled
on PA2.
Table 4-14 Mechanical Buttons
Pin on SAM4E Silkscreen text
NRST RESET
PA2 SW0
4.2.9. LED
There is one yellow LED available on the SAM4E Xplained Pro board that can be turned on and off. The
LED can be activated by driving the connected I/O line to GND.
Table 4-15 LED Connections
Pin on SAM4E LED
PD22 Yellow LED0
4.3. Embedded Debugger Implementation
SAM4E Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug
the ATSAM4E16E using Serial Wire Debug (SWD). The Embedded Debugger also include a Virtual Com
port interface over UART, an Atmel Data Gateway Interface over SPI and TWI and it monitors four of the
SAM4E GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.
4.3.1. Serial Wire Debug
The Serial Wire Debug (SWD) use two pins to communicate with the target. For further information on
how to use the programming and debugging capabilities of the EDBG, see the EDBG User Guide.
Table 4-16 SWD Connections
Pin on SAM4E Function
PB7 SWD clock
PB6 SWD data
PB5 SWD trace output
PB12 Erase
4.3.2. Virtual COM Port
The Embedded Debugger act as a Virtual Com Port gateway by using one of the ATSAM4E16E UARTs.
For further information on how to use the Virtual COM port, see Embedded Debugger on page 7.
Table 4-17 Virtual COM Port Connections
Pin on SAM4E Function
PA9 URXD0 (SAM4E RX line)
PA10 UTXD0 (SAM4E TX line)
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4.3.3. Atmel Data Gateway Interface
The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either a USART or
TWI port. The DGI can be used to send a variety of data from the SAM4E to the host PC. For further
information on how to use the DGI interface, see Embedded Debugger on page 7.
Table 4-18 DGI Interface Connections when using USART
Pin on SAM4E Function
PB0 RXD0
PB1 TXD0
PB13 SCK0
Table 4-19 DGI Interface Connections when using TWI
Pin on SAM4E Function
PA3 SDA (Data line)
PA4 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 makes it possible to accurately time stamp events in the SAM4E
application code. For further information on how to configure and use the GPIO monitoring features, see
Embedded Debugger on page 7.
Table 4-20 GPIO Lines Connected to the EDBG
Pin on SAM4E Function
PD27 GPIO0
PE3 GPIO1
PE4 GPIO2
PE2 GPIO3
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5. Kit Specific Data
One of the user pages in the EDBG is programmed with data specific to the SAM4E Xplained Pro. The
data can be read through the I2C interface connected to the EDBG. For detailed information, see the
EDBG User Guide . All data is stored as little endian.
Table 5-1 MAC48Register, Offset: 0x00
Name Description Size [bits]
MAC48 Unique address assigned to the kit. 48
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6. Hardware Revision History and Known Issues
6.1. Identifying Product ID and Revision
The revision and product indentifier 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 indentifier for SAM4E Xplained Pro is A09-2081.
6.2. Revision 3
Revision 3 is the initially released revision.
6.2.1. 12MHz Crystal Selection
The selected 12MHz crystal FQ5032B-12-C-C-C-200-1 has a load of 20pF, this is outside the
recommended range of 12.5pF to 17.5pF in the ATSAM4E16E datasheet. Using a crystal with loads
outside the recommended range can cause instability when operating the device close to maximum/
minimum parameters for supply voltage and temperature.
Fix/Workaround: None, any new design should select a crystal within the limits specified in the
datasheet.
Related Links
Crystals on page 22
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7. Appendix
7.1. Getting Started with IAR
IAR Embedded Workbench® for ARM® is a propriatory 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 intial 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 checkbox 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 7-1 Select Target Device
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Figure 7-2 Select Debugger
Figure 7-3 Configure Flash Loader
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Figure 7-4 Configure Reset
Figure 7-5 Configure Interface
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8. Document Revision History
Doc. rev. Date Comment
42216B 09/2015 Added ERRATA about 12MHz crystal and IAR getting started guide.
42216A 02/2013 Initial document release.
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9. 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
©
2015 Atmel Corporation. / Rev.: Atmel-42216B-SAM4E-Xplained-Pro_User Guide-09/2015
Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, AVR®, and others are registered trademarks or trademarks of Atmel Corporation in
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