USER GUIDE
Atmel SAM4E Xplained Pro
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 .............................................................................. 3
1.1. Features .... .... ....... .... .... ........... .... .... ........... .... .... ....... .... .... .. 3
1.2. Kit Overview ......... .... .... ........... .... .... ....... .... .... ........... .... .... ... 3
2. Getting Started ........................................................................ 5
2.1. Quick-start ........... .... .... ........... .... .... ....... .... .... ........... .... .... ... 5
2.2. Connecting the Kit ......... .... .... ........... .... .... ....... .... .... ........... ... 5
2.3. Design Documentation and Related Links ... ........... .... .... ........... . 5
3. Xplained Pro ............................................................................ 6
3.1. Embedded Debugger ....... .... .... ........... .... .... ........... .... .... ....... . 6
3.2. Hardware Identification System . .... .... ........... .... .... ....... .... .... ..... 6
3.3. Power Supply ..... .... .... ....... .... .... ........... .... .... ........... .... .... ..... 7
3.3.1. Measuring SAM4E Power Consumption .. .... ........... .... ... 7
3.4. Standard Headers and Connectors ... .... .... ........... .... .... ........... .. 7
3.4.1. Xplained Pro Standard Extension Header ... .... .... ....... .... 7
3.4.2. Xplained Pro LCD Connector .... ........... .... .... ....... .... .... 8
3.4.3. Xplained Pro Power Header .... ....... .... .... ........... .... .... 10
4. Hardware User Guide ........................................................... 11
4.1. Connectors ....... .... .... ........... .... .... ........... .... .... ....... .... .... ..... 11
4.1.1. I/O Extension Headers ...... .... .... ........... .... .... ....... .... . 11
4.1.2. LCD Extension Connector . .... .... ....... .... .... ........... .... .. 12
4.1.3. Chip Erase Header .... ........... .... .... ....... .... .... ........... . 14
4.1.4. Other Headers .... .... .... ........... .... .... ....... .... .... .......... 14
4.2. Peripherals ....... .... .... ........... .... .... ........... .... .... ....... .... .... ..... 14
4.2.1. SRAM .... .... ....... .... .... ........... .... .... ........... .... .... ...... 14
4.2.2. NAND Flash . .... ........... .... .... ....... .... .... ........... .... .... . 15
4.2.3. Ethernet ........... .... .... ........... .... .... ....... .... .... ........... . 16
4.2.4. SD Card Connector ........... .... .... ....... .... .... ........... .... 17
4.2.5. CAN .... .... .... ....... .... .... ........... .... .... ........... .... .... ..... 17
4.2.6. USB .... .... .... ........... .... .... ....... .... .... ........... .... .... ..... 17
4.2.7. Crystals .... ....... .... .... ........... .... .... ........... .... .... ....... . 17
4.2.8. Mechanical Buttons ... .... ....... .... .... ........... .... .... ......... 18
4.2.9. LED .... .... .... ........... .... .... ....... .... .... ........... .... .... ..... 18
4.3. Embedded Debugger Implementation ...... .... .... ........... .... .... ..... 18
4.3.1. Serial Wire Debug .... .... .... ....... .... .... ........... .... .... ..... 18
4.3.2. Virtual COM Port .... ........... .... .... ....... .... .... ........... .... 18
4.3.3. Atmel Data Gateway Interface .......... .... .... ........... .... .. 19
5. Kit Specific Data ................................................................... 20
6. Hardware Revision History and Known Issues ..................... 21
6.1. Identifying Product ID and Revision .. ........... .... .... ........... .... .... . 21
6.2. Revision 3 .. ........... .... .... ........... .... .... ....... .... .... ........... .... .... 21
7. Document Revision History ................................................... 22
8. Evaluation Board/Kit Important Notice .................................. 23
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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 Quick-start
3 Steps to start exploring the Atmel Xplained Pro Platform
● Download and install Atmel Studio
● Launch Atmel Studio
● Connect a Micro-B cable to the DEBUG USB port
2.2 Connecting the Kit
When connecting Atmel SAM4E Xplained Pro to your computer for the first time, the operating system will do a
driver software installation. The driver file supports both 32-bit and 64-bit versions of Microsoft® Windows® XP
and Windows 7.
Once connected the green power LED will be lit and Atmel Studio will autodetect which Xplained Pro
evaluation- and extension kit(s) that's connected. You'll be presented with relevant information like datasheets
and kit documentation. You also have the option to launch Atmel Software Framework (ASF) example
applications. The target device is programmed and debugged by the on-board Embedded Debugger and
no external programmer or debugger tool is needed. Refer to the Atmel Studio user guide2 for information
regarding how to compile and program the kit.
1
2.3 Design Documentation and Related Links
The following list contains links to the most relevant documents and software for SAM4E Xplained Pro.
1. Xplained Pro products 3 - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kits
for 8- and 32-bit Atmel microcontrollers. It consists of a series of low cost MCU boards for evaluation and
demonstration of features and capabilities of different MCU families.
2. SAM4E Xplained Pro User Guide 4 - PDF version of this User Guide.
3. SAM4E Xplained Pro Design Documentation 5 - Package containing schematics, BOM, assembly
drawings, 3D plots, layer plots etc.
4. EDBG User Guide 6 - User guide containing more information about the onboard Embedded Debugger.
5. Atmel Studio 7 - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
6.
IAR Embedded Workbench® 8 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.
7. Atmel sample store 9 - Atmel sample store where you can order samples of devices.
1
http://www.atmel.com/atmelstudio
2
http://www.atmel.com/atmelstudio
3
http://www.atmel.com/XplainedPro
4
http://www.atmel.com/Images/Atmel-42216-SAM4E-Xplained-Pro_User-Guide.pdf
5
http://www.atmel.com/Images/Atmel-42216-SAM4E-Xplained-Pro_User-Guide.zip
6
http://www.atmel.com/Images/Atmel-42096-Microcontrollers-Embedded-Debugger_User-Guide.pdf
7
http://www.atmel.com/atmelstudio
8
http://www.iar.com/en/Products/IAR-Embedded-Workbench/ARM/
9
http://www.atmel.com/system/samplesstore
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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 that 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 that are connected through
a set of standardized headers and connectors. Each extension board has an identification (ID) chip to uniquely
identify which boards are mounted on a Xplained Pro MCU board. This information is used to present relevant
user guides, application notes, datasheets and example code through Atmel Studio. Available Xplained Pro
MCU and extension boards can be purchased in the Atmel Web Store1.
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 Data Gateway
Interface (DGI).
In conjunction with Atmel Studio, the EDBG debugger interface can program and debug the ATSAM4E16E. On
the SAM4E Xplained Pro, the SWD interface is connected between the EDBG and the ATSAM4E16E.
The Virtual COM Port is connected to a UART port on the ATSAM4E16E (see section “Embedded Debugger
Implementation” on page 18 for pinout), and provides an easy way to communicate with the target
application through simple terminal software. It offers variable baud rate, parity and stop bit settings. Note that
the settings on the target device UART must match the settings given in the terminal software.
The DGI consists of several physical data interfaces for communication with the host computer. See section
“Embedded Debugger Implementation” on page 18 for available interfaces and pinout. Communication
over the interfaces are 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. The
DGI uses a proprietary protocol, and is thus only compatible with Atmel Studio.
The EDBG controls two LEDs on SAM4E Xplained Pro, a power LED and a status LED. Table 3-1, “EDBG LED
Control” on page 6 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
The power LED and the status LED blinks in an alternating pattern.
upgrade)
For further documentation on the EDBG, see the EDBG User Guide2.
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 board 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 6 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’
Activity indicator, LED flashes
every time something happens on
the EDBG.
1
http://store.atmel.com/CBC.aspx?q=c:100113
2
http://www.atmel.com/Images/Atmel-42096-Microcontrollers-Embedded-Debugger_User-Guide.pdf
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Data Field Data Type Example Content
Minimum Voltage [mV] uint16_t 3000
Maximum Voltage [mV] uint16_t 3600
Maximum Current [mA] uint16_t 30
3.3 Power Supply
The SAM4E Xplained Pro kit can be powered either by USB or by an external power source through the 4pin power header, marked PWR. This connector is described in “Xplained Pro Power Header” on page 10.
The available power sources and specifications are listed in Table 3-3, “Power Sources for SAM4E Xplained
Pro” on page 7.
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
Embedded debugger
USB
4.4V to 5.25V
(according to USB spec)
Target USB 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)
500mA (according to
USB spec)
PWR
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
Note
External power is required when the 500mA through the USB connector is not enough to power a
connected USB device in a USB host application.
3.3.1 Measuring SAM4E Power Consumption
As part of an evaluation of the SAM4E it can be of interest to measure its power consumption. Because the
device has a separate power plane (VCC_MCU_P3V3) on this board it is possible to measure the current
consumption by measuring the current that is flowing into this plane. The VCC_MCU_P3V3 plane is connected
via a jumper to the main power plane (VCC_TARGET_P3V3) and by replacing the jumper with an ammeter it is
possible to determine the current consumption. To locate the current measurement header, refer to Figure 1-1,
“SAM4E Xplained Pro Evaluation Kit Overview” on page 4.
Warning
Do not power the board without having the jumper or an ampere meter mounted. This can cause
the SAM4E to be powered through its I/O pins and cause undefined operation of the device.
3.4 Standard 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 headers. Xplained Pro MCU boards
have male headers while Xplained Pro extensions have their female counterparts. Note that all pins are not
always connected. However, all the connected pins follow the defined pin-out described in Table 3-4, “Xplained
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Pro Extension Header” on page 8. The extension headers can be used to connect a wide variety of
Xplained Pro extensions to Xplained Pro MCU boards and to access the pins of the target MCU on Xplained
Pro MCU board directly.
Table 3-4. Xplained Pro Extension Header
Pin number Name Description
1 ID Communication line to the ID chip on 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 positive part of
differential PWM.
9 IRQ/GPIO Interrupt request line and/or general purpose I/O.
10 SPI_SS_B/GPIO Slave select for SPI and/or general purpose I/O.
11 TWI_SDA Data line for two-wire interface. Always implemented, bus
type.
12 TWI_SCL Clock line for two-wire interface. Always implemented, bus
type.
13 USART_RX Receiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter.
14 USART_TX Transmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter.
15 SPI_SS_A Slave select for SPI. Should be unique if possible.
16 SPI_MOSI Master out slave in line of Serial peripheral interface. Always
implemented, bus type.
17 SPI_MISO Master in slave out line of Serial peripheral interface. Always
implemented, bus type.
18 SPI_SCK Clock for Serial peripheral interface. Always implemented,
bus type.
19 GND Ground.
20 VCC Power for extension board.
3.4.2 Xplained Pro LCD 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 touchcontroller. The connector pin-out definition is shown in Table 3-5, “Xplained Pro LCD
Connector” on page 8. Note that usually only one display interface is implemented, either 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 designs and can be used as a reference.
Table 3-5. Xplained Pro LCD Connector
Pin number Name RGB interface
1 ID Communication line to ID chip on extension board.
2 GND Ground
3 D0 Data line
MCU interface
description
description
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Pin number Name RGB interface
description
MCU interface
description
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 D12 Data line
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 the register or the
data interface.
34 VSYNC / CS Vertical synchronization Chip select
35 HSYNC / WE Horizontal
Write enable signal
synchronization
36 DATA ENABLE / RE Data enable signal Read enable signal
37 SPI SCK Clock for Serial peripheral interface
38 SPI MOSI Master out slave in line of Serial peripheral interface
39 SPI MISO Master in slave out line of Serial peripheral interface
40 SPI SS Slave select for SPI. Should be unique if possible
41 ENABLE Display enable signal
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Pin number Name RGB interface
42 TWI SDA
43 TWI SCL I2C clock line (maXTouch)
44 IRQ1 maXTouch interrupt line
45 IRQ2 Interrupt line for other I2C devices
46 PWM Backlight control
47 RESET Reset for both display and maxTouch
48 VCC 3.3V power supply for extension board
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 the 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 for the 3.3V regulated output. To locate the current measurement header, refer to
Figure 1-1, “SAM4E Xplained Pro Evaluation Kit Overview” on page 4
Table 3-6. Power header PWR
Pin number PWR header Pin name Description
1 VEXT_P5V0 External 5V input
2 GND Ground
3 VCC_P5V0 Unregulated 5V (output, derived
4 VCC_P3V3 Regulated 3.3V (output, used as
description
MCU interface
description
I2C data line (maXTouch®)
from one of the input sources)
main power for the kit)
Note
If the board is powered from a battery source it is recommended to use the PWR header. If there
is a power source connected to EDBG USB, the EDBG is activated and it will consume more
power.
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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 I/O 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 7. All headers have a
pitch of 2.54 mm.
Table 4-1. Extension Header EXT1
Pin on EXT1 SAM4E pin Function Shared functionality
1 - Communication
line to ID chip on
extension board.
2 - GND
3 PB2 AFE AD0
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
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 - -
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Pin on EXT2 SAM4E pin Function Shared functionality
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
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
line to ID chip on
extension board.
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Pin on EXT4 SAM4E pin Function Shared functionality
2 [GND] - GND
3 [D0] PC0 D0 SRAM, NAND and EBI spare header
4 [D1] PC1 D1 SRAM, NAND and EBI spare header
5 [D2] PC2 D2 SRAM, NAND and EBI spare header
6 [D3] PC3 D3 SRAM, NAND and EBI spare header
7 [GND] - GND
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 ENABLE / RE] PC11 NRD SRAM and EBI spare header
37 [SPI SCK] - -
38 [SPI MOSI] - -
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
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Pin on EXT4 SAM4E pin Function Shared functionality
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 4. This header can be used to
chip erase the SAM4E by place 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 immediatly sets invalid clock options or goes into deep sleep withouth any
wake-up sources.
4.1.4 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
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 14 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
header
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Pin on SAM4E Function SRAM function Shared functionality
PC1 D1 Data line 1 NAND, LCD connector and EBI spare
header
PC2 D2 Data line 2 NAND, LCD connector and EBI spare
header
PC3 D3 Data line 3 NAND, LCD connector and EBI spare
header
PC4 D4 Data line 4 NAND, LCD connector and EBI spare
header
PC5 D5 Data line 5 NAND, LCD connector and EBI spare
header
PC6 D6 Data line 6 NAND, LCD connector and EBI spare
header
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
SRAM0)
PD19 NCS3 #Chip Enable (on
SRAM1)
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 utulize 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.
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Table 4-7, “NAND Flash Connections” on page 16 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 10/100 Mbps 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
“Hardware Revision History and Known Issues” on page 21 and “Kit Specific Data” on page 20.
Table 4-8, “RJ45 Connections” on page 16 lists all I/O-lines connected to the Ethernet PHY.
Table 4-8. RJ45 Connections
SAM4E pin Function Ethernet function Shared functionality
PD0 GTXCK TXC
PD1 GTXEN TXEN
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
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SAM4E pin Function Ethernet function Shared functionality
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/
EXT2 GPIO
#NAND_TREE
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 17 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
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 17 lists the I/O-lines connected to the CAN transceiver.
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 17 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
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cutting the strap and adding a resistor across the strap. More information about oscillator allowance and safety
factor can be found in appnote AVR41001.
Table 4-12. External 32.768kHz Crystals
Pin on SAM4E Function
PA7 XIN32
PA8 XOUT32
Table 4-13. External 12MHz Crystals
Pin on SAM4E Function
PB9 XIN
PB8 XOUT
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 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 “Embedded Debugger” on page 6.
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 6.
1
http://www.atmel.com/images/doc8333.pdf
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Table 4-17. Virtual COM Port Connections
Pin on SAM4E Function
PA9 URXD0 (SAM4E RX line)
PA10 UTXD0 (SAM4E TX line)
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 6.
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 6.
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 on page 5. 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 identifier of Xplained Pro boards can be found in two ways, through Atmel Studio or
by looking at the sticker on the bottom side of the PCB.
By connecting a 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 Kits
window.
The same information can be found on the sticker on the bottom side of the PCB. The sticker on SAM4E
Xplained Pro shows the identifier and revision plain text as A09-nnnn\rr where nnnn is the identifier and rr is the
revision. There is also printed a uniqly assigned MAC48 address in hex. A serial number string is embedded in
the matrix-barcode located on the sticker.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The kit identifier for SAM4E Xplained Pro is 2081.
6.2 Revision 3
Revision 3 is the initially released revision, there are no known issues.
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7. Document Revision History
Document
Date Comment
revision
42216A 02/2013 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.
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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
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