Atmel SAM3N-EK User manual

11080C–ATARM–30-Mar-11
SAM3N-EK Development Board
....................................................................................................................
User Guide

SAM3N-EK Development Board User Guide 1-1
11080C–ATARM–30-Mar-11
Section 1
Introduction.................................................................................................................1-1
1.1 SAM3N Evaluation Kit........................................................................................................ 1-1
1.2 User Guide ......................................................................................................................... 1-1
1.3 References and Applicable Documents ............................................................................. 1-1
Section 2
Kit Contents ................................................................................................................2-1
2.1 Deliverables ....................................................................................................................... 2-1
2.2 Electrostatic Warning ......................................................................................................... 2-2
Section 3
Power Up....................................................................................................................3-1
3.1 Power up the Board ...........................................................................................................3-1
3.2 DevStart ............................................................................................................................. 3-1
3.3 Recovery Procedure .......................................................................................................... 3-1
3.4 Sample Code and Technical Support ................................................................................ 3-1
Section 4
Evaluation Kit Hardware .............................................................................................4-1
4.1 Board Overview.................................................................................................................. 4-1
4.2 Features List ...................................................................................................................... 4-2
4.3 Function Blocks.................................................................................................................. 4-2
4.3.1 Processor............................................................................................................. 4-2
4.3.2 Memory................................................................................................................ 4-2
4.3.3 Clock Circuitry...................................................................................................... 4-3
4.3.4 Reset Circuitry ..................................................................................................... 4-3
4.3.5 Power Supply and Management.......................................................................... 4-4
4.3.6 UART ................................................................................................................... 4-4
4.3.7 Display Interface .................................................................................................. 4-5
4.3.8 Backlight Control.................................................................................................. 4-5
4.3.9 JTAG/ICE............................................................................................................. 4-6
4.3.10 PWM Buzzer........................................................................................................ 4-6
4.3.11 SD/MMC Card ..................................................................................................... 4-6
4.3.12 Touch Elements .................................................................................................. 4-7
4.3.13 User Buttons ........................................................................................................ 4-7
4.3.14 LEDs .................................................................................................................... 4-8
4.3.15 ZigBee ................................................................................................................. 4-8
4.3.16 PIO Expansion ..................................................................................................... 4-8
4.4 Configuration...................................................................................................................... 4-9
4.4.1 PIO Usage ........................................................................................................... 4-9

SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
4.4.2 Jumpers ............................................................................................................. 4-12
4.4.3 Test Points......................................................................................................... 4-12
4.4.4 Assigned PIO Lines, Disconnection Possibility.................................................. 4-13
Section 5
QT600.........................................................................................................................5-1
5.1 Overview ............................................................................................................................ 5-1
5.2 System Description ............................................................................................................ 5-2
5.3 Features ............................................................................................................................. 5-2
5.4 Getting Started ................................................................................................................... 5-3
5.5 Hardware Description.........................................................................................................5-5
5.5.1 QT600 Interface Board ........................................................................................ 5-5
5.5.2 TOUCH DATA Connectors .................................................................................. 5-7
5.5.3 Target Voltage VTG............................................................................................. 5-8
5.5.4 VTG LED ............................................................................................................. 5-8
5.5.5 TOUCH DATA LED ............................................................................................. 5-8
5.5.6 STATUS LED....................................................................................................... 5-9
5.5.7 Touch ATx Firmware ........................................................................................... 5-9
5.6 Touch Debug...................................................................................................................... 5-9
5.7 Using QT600 and AVR QTouch Studio for Custom Applications....................................... 5-9
5.8 Troubleshooting and Support........................................................................................... 5-10
5.8.1 Technical Support.............................................................................................. 5-10
5.8.2 Force Firmware Upgrade................................................................................... 5-10
Section 6
Schematics .................................................................................................................6-1
6.1 Schematics......................................................................................................................... 6-1
Section 7
Troubleshooting..........................................................................................................7-1
7.1 Self-Test............................................................................................................................. 7-1
7.2 Board Recovery ................................................................................................................. 7-1
Section 8
Revision History..........................................................................................................8-1
8.1 Revision History ................................................................................................................. 8-1

SAM3N-EK Development Board User Guide 1-1
11080C–ATARM–30-Mar-11
Section 1
Introduction
1.1 SAM3N Evaluation Kit
The SAM3N Evaluation Kit (SAM3N-EK) allows the evaluation of the SAM3N series devices. It has
enough features to demonstrate most of the product's capabilities to the users. The SAM3N-EK also fea-
tures extension connectors to allow the users to add new interfaces in case they are not on-board.
1.2 User Guide
This guide focuses on the SAM3N-EK board as an evaluation platform. It is made up of 6 sections:
Section 1 includes references, applicable documents, acronyms and abbreviations.
Section 2 summarizes the kit contents.
Section 3 provides instructions to power up the SAM3N-EK and describes how to use it.
Section 4 describes the SAM3N-EK board design in more detail.
Section 5 provides schematics.
Section 6 describes the troubleshooting.
1.3 References and Applicable Documents
Table 1-1. References and Applicable Documents
Title Comment
SAM3N Datasheet http://atmel.com/dyn/products/devices.asp?family_id=605#2245

SAM3N-EK Development Board User Guide 2-1
11080C–ATARM–30-Mar-11
Section 2
Kit Contents
2.1 Deliverables
The Atmel®SAM3N Evaluation Kit contains the following items:
a SAM3N-EK board
a universal input AC/DC power supply with US, Europe and UK plug adapters
one serial RS232 cable
a welcome letter
Figure 2-1. Unpacked SAM3N-EK
Unpack and inspect the kit carefully. Contact your local Atmel distributor, should you have issues con-
cerning the contents of the kit.

Kit Contents
2-2 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
2.2 Electrostatic Warning
The SAM3N-EK board must not be subjected to high electrostatic potentials. A grounding strap or similar
protective device should be worn when handling the board. Avoid touching the components or any other
metallic element of the board.

SAM3N-EK Development Board User Guide 3-1
11080C–ATARM–30-Mar-11
Section 3
Power Up
3.1 Power up the Board
Unpack the board taking care to avoid electrostatic discharge. Unpack the power supply, select the right
power plug adapter corresponding to that of your country, and insert it in the power supply.
Connect the power supply DC connector to the board and plug the power supply to an AC power plug.
The board LCD should light up and run a Touch demo (shows a screen animation that matches the
Touch devices operated on the PCB).
3.2 DevStart
The CDROM provided in the kit contains what we call a "DevStart" a.k.a. "Development Start". This bun-
dle guides you through the first steps of building and running a software application on the SAM3N-EK.
If the CD does not auto-play on your PC, just open it through the explorer and click the file welcome.html
to get started.
The SAM3N-EK DevStart guides you through the installation processes of IAR™ EWARM, Keil MDK
and GNU toolkits. Then, it gives you step-by-step instructions on how to rebuild a single example project
and how to program it into the SAM3N-EK. Optionally, if you have a SAM-ICE™, instructions are also
given about how to debug the code.
3.3 Recovery Procedure
The DevStart ends by giving step-by-step instructions on how to recover the SAM3N-EK to the state as it
was when shipped by Atmel.
SAM3N-EK Test Software, Chapter 3.1 "Flash Recovery" gives instructions if you deleted the contents of
the embedded Flash or the DataFlash®and want to recover from this situation.
3.4 Sample Code and Technical Support
After boot up, you can run some sample code or your own application on the development kit. You can
download sample code and get technical support from Atmel website
(http://support.atmel.no/bin/customer).

SAM3N-EK Development Board User Guide 4-1
11080C–ATARM–30-Mar-11
Section 4
Evaluation Kit Hardware
4.1 Board Overview
This section introduces the Atmel SAM3N Evaluation Kit design. It introduces system-level concepts,
such as power distribution, memory, and interface assignments.
The SAM3N-EK board is based on the integration of an ARM®Cortex®-M3 processor with on-board
Flash and a set of popular peripherals. It is designed to provide a high performance processor evaluation
solution with high flexibility for various kinds of applications.
Figure 4-1. SAM3N-EK Block Diagram

Evaluation Kit Hardware
4-2 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
4.2 Features List
Here is the list of the main board components and interfaces:
SAM3N4C QFP chip with optional socket footprint
12 MHz crystal
32.768 KHz crystal
32-Megabit Serial DataFlash
2.0 inch TFT color LCD display with backlight
UART port with level shifter IC
Micro SD interface
Reset buttons: NRST
User buttons: Left and Right
QTouch®buttons: Left, Right, and Slider
JTAG port
On-board power regulation
Two user LEDs
Power LED
ZigBee®connector
2x32 bit PIO connection interfaces (PIOA, PIOC) and 1x15 bit PIO connection interface (PIOB)
4.3 Function Blocks
4.3.1 Processor
The SAM3N-EK is equipped with a SAM3N4C device in LQFP100 package.
4.3.2 Memory
The SAM3N4 chip embeds:
256 Kbytes of embedded Flash
24 Kbytes of embedded SRAM with dual bank
16 Kbytes of ROM with embedded BootLoader routines (UART) and In-Application Programming
functions (IAP) routines.
The SAM3N-EK features an external DataFlash through SPI bus
Figure 4-2. DataFlash
NPCS3 chip select signal is used for DataFlash chip selection.
DATA FLASH
SPI MOSI
SPI MISO
SPI CLK
NPCS_DATAFLASH
PA12
PA13
PA14
PA22
+3V3
DGND
+3V3
+3V3
R32 0RR32 0R
R28 0RR28 0R
R29 10RR29 10R
MN7
AT25DF321
MN7
AT25DF321
NCS
1
SO
2
NWP
3
VCC 8
NHOLD
7
SCK
6
GND 4
SI
5
R27
47K
R27
47K
C35
100nF
C35
100nF
R31 0RR31 0R

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-3
11080C–ATARM–30-Mar-11
4.3.3 Clock Circuitry
The clock generator of a SAM3N microcontroller is made up of:
A Low Power 32,768 Hz Slow Clock Oscillator with bypass mode
A Low Power RC Oscillator
A 3 to 20 MHz Crystal Oscillator, which can be bypassed
A factory programmed fast internal RC Oscillator. 3 output frequencies can be selected: 4 (default
value), 8 or 12 MHz.
A 60 to 130 MHz programmable PLL (input from 3.5 to 20 MHz), capable to provide the clock MCK to
the processor and to the peripherals.
The SAM3N-EK board is equipped with one 12 MHz crystal, and one 32.768 Hz crystal. An optional
12 MHz Piezoelectric Ceramic Resonator can be mounted in place of the 12 MHz crystal (for low cost
clocking option evaluation).
Figure 4-3. SAM3N MCU
4.3.4 Reset Circuitry
The on-board NRST button BP1 provides the SAM3N4C with external reset control.
Two User buttons BP2 and BP3, can be used to wake up the chip from low power modes.
The NRST pin is bidirectional. It is handled by the on-chip reset controller. It can be driven low to provide
a reset signal out to the external components. Conversely, it can be asserted low from the outside to
reset the microcontroller, its core and peripherals, with exception of the backup region (RTC, RTT and
DNP
XIN
PB2
PB3
PB10
PB11
PB4
PB6
PB7
PB5
NRST
PB1
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PA16
PA17
PA18
PA19
PA20
PA21
PA22
PA23
PA24
PA25
PA26
PA27
PA28
PA29
PA30
PA31
PC0
PC1
PC2 PC3 PC4
PC5
PC6
PC7
PC8
PC9
PC10 PC11
PC12
PC13
PC14
PC15
PC16
PC17
PC18 PC19
PC20 PC21
PC22 PC23
PC24
PC25 PC26 PC27
PC28
PC29
PC30
PC31
XOUT
XOUT32
PB0
JTAGSEL
XIN32
PB0
PB6
PB7
PB10
PB11
PB1
PB2
PB12
PB3
PB14
PB13
PB4
PB5
PB13
PB14
PB12
XIN32
XOUT32
PA7
PA8
ADVREF
DGND
DGND
VDDIO
DGND
DGND
DGND VDDPLLVDDCORE DGND
VDDINVDDOUT
DGND
DGND
+3V3
+3V3
+3V3
PA[0..31]
PC[0..31]
PB[0..14]
NRST
R1 DNPR1 DNP
C22 4.7uFC22 4.7uF
C13 100nFC13 100nF
R9 DNPR9 DNP
C7 100nFC7 100nF
C3
7pF
C3
7pF
R2 0RR2 0R
C21 4.7uFC21 4.7uF C10 100nF C10 100nF
C4
7pF
C4
7pF
C20 100nF C20 100nF C15 100nF C15 100nF
Y1Y1
1
2
3
C19 100nF C19 100nF
JP3JP3
JP2JP2
C12 100nF C12 100nF
Y3
32.768KHz
Y3
32.768KHz
1 2
3
4
C18 100nFC18 100nF
R7 DNPR7 DNP
C9 2.2uF C9 2.2uF
C17 100nF C17 100nF
C5
100nF
C5
100nF
SAM3N - LQFP100
MN1
SAM3N4C-AU
SAM3N - LQFP100
MN1
SAM3N4C-AU
PA0_PWM0_TIOA0 74
PA1_PWM1_TIOB0 72
PA2_PWM2_SCK0_DATRG 67
PA3_TWD0_NPCS3 66
PA4_TWCK0_TCLK0 55
PA5_RXD0_NPCS3 53
PA6_TXD0_PCKO 52
PA7_RTS0_PWM3 49
PA8_CTS0_ADTRG 48
PA9_URXD0_NPCS1 46
PA10_UTXD0_NPCS2 44
PA11_NPCS0_PWM0 42
PA12_MISO_PWM1 41
PA13_MOSI_PWM2 33
PA14_SPCK_PWM3 31
PA15_TIOA1 30
PA16_TIOB1 28
PA17_PCK1_AD0 12
PA18_PCK2_AD1 14
PA19_AD2 18
PA20_AD3 24
PA21_RXD1_PCK1_AD8 15
PA22_TXD1_NPCS3_AD9 20
PA23_SCK1_PWM0 22
VDDCORE
85
JTAGSEL
77
GND
45
GND
95
GND
70
GND
26
VDDIO
27
VDDIO
69
VDDIO
91
PB8_XOUT
96
PB9_XIN
97
PB0_PWM0_AD4
3
NRST
60
VDDCORE
56
ADVREF 1
PA25_CTS1_PWM2 38
PA24_RTS1_PWM1 34
PB2_URXD1_NPCS2_AD6
7
PB3_UTXD1_PCK2_AD7
9
PB6_TMS_SWDIO
79 PB4_TWD1_PWM2_TDI
51
PB5_TWCK1_TDO_TACESWO
76 PB7_TCK_SWCLK
83
TEST
61
PB12_ERASE
87 PB14_NPCS1_PWM3 99
VDDOUT
11
PB1_PWM1_AD5
5
PA26_TIOA2 39
PA27_TIOB2 57
PA28_TCLK1 59
PA29_TCLK2 63
PA30_NPCS2 64
PA31_NPCS1_PCK2 81
VDDIN
10
PB10_DDM
88
PB11_DDP
89
PB13_PCK0_DAC0 93
VDDIO
98
VDDCORE
36
VDDCORE
16
VDDPLL
100
VDDIO
50
GND
2
PC0 25
PC1 47
PC2 43
PC3 40
PC4_NPCS1 37
PC5 35
PC6 32
PC7_NPCS2 29
PC8_PWM0 58
PC9_PWM1 62
PC10_PWM2 65
PC11_PWM3 68
PC12_AD12 23
PC13_AD10 21
PC14_PCK2 71
PC15_AD11 19
PC16_PCK0 73
PC17_PCK1 75
PC18_PWM0 78
PC19_PWM1 80
PC20_PWM2 82
PC21_PWM3 84 PC22_PWM0 86
PC23_TIOA3 90
PC24_TIOB3 92
PC25_TCLK3 94
PC26_TIOA4 13
PC27_TIOB4 17
PC28_TCLK4 54
PC29_TIOA5_AD13 4
PC30_TIOB5_AD14 6
PC31_TCLK5_AD15 8
R5
0R
R5
0R
C14 DNPC14 DNP
C8 100nFC8 100nF
Y2 12MHzY2 12MHz
C1 15pFC1 15pF
C16 100nFC16 100nF
R4 DNPR4 DNP
R3 0RR3 0R
R10
0R
R10
0R
JP1
DNP
JP1
DNP
C2 15pFC2 15pF
C11 100nFC11 100nF

Evaluation Kit Hardware
4-4 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
Supply Controller). The NRST pin integrates a permanent pull-up resistor of about 100 kOhm to VDDIO.
On the SAM3N-EK board, the NRST signal is connected to the JTAG port.
4.3.5 Power Supply and Management
The SAM3N-EK board is supplied with an external 5V DC block through the J1 socket. It is protected by
a PolyZen diode MN3. The PolyZen protects the board in the case of an incorrect power supply
connection.
The LDO regulator MN4 is used for the 3.3V main supply. It powers all the 3.3V components on the
board.
Figure 4-4. Power Block
The SAM3N4/2/1 product series has different types of power supply pins:
VDDIN pin: Power for the internal voltage regulator, ADC, DAC, and analog comparator power
supplies. This voltage ranges from 1.8V to 3.6V.
VDDIO pin: Powers the Peripheral I/O lines, Backup part, 32 kHz crystal oscillator and oscillator pads.
This voltage ranges from 1.62V to 3.6V.
VDDOUT pin: Output of the internal voltage regulator.
VDDCORE pin: Powers the core, including the processor, the embedded memories and the
peripherals. This voltage ranges from 1.62V to 1.95V.
VDDPLL pin: Powers the PLL, the Fast RC and the 3 to 20 MHz oscillators. This voltage ranges from
1.62V to 1.95V.
4.3.6 UART
The Universal Asynchronous Receiver Transmitter features a two-pin UART that can be used for com-
munication and trace purposes. It offers an ideal channel for in-situ programming solutions. This UART
is associated with two PDC channels to reduce the processor time on packet handling.
The two-pin UART (TXD and RXD only) is buffered through an RS232 Transceiver MN8 and brought to
the DB9 male connector J4.
+3V3+5V
DGND
C25
1uF
C25
1uF
C29
10uF 0805
C29
10uF 0805
J1
MP179P 2.1mm
J1
MP179P 2.1mm
1
2
3
+
C28
22uF
+
C28
22uF
MN4
LP38692MP-3.3
MN4
LP38692MP-3.3
VIN
4VOUT 3
VEN
1NC 2
GND
5
MN3
ZEN056V130A24LS
MN3
ZEN056V130A24LS
1
2
3
C27
100nF
C27
100nF
C26
10uF 0805
C26
10uF 0805

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-5
11080C–ATARM–30-Mar-11
Figure 4-5. UART
4.3.7 Display Interface
The SAM3N-EK carries a TFT Transmissive LCD module with touch panel, TM020GDZ18. Its integrated
driver IC is ILI9225B. The LCD display area is 2.0 inches diagonally measured, with a native resolution
of 176x220 pixels.
The LCD module gets reset from GPIO PA29. The LCD chip select signal is connected to NPCS2. The
SAM3N communicates with the LCD through the SPI bus.
Figure 4-6. LCD
4.3.8 Backlight Control
The LCD backlight is made of four integrated white chip-LEDs arranged in parallel. These are driven by
an AAT3193 charge pump, MN5. The AAT3193 is controlled by the SAM3N through a single PIO line
interface (PC13); the 0 Ohm resistor R17 is mounted in series on this line, which permits to use it for
other custom purposes. In that case, the pull-up resistor R64 maintains the charge pump permanently
enabled by default.
On the anode drive line, a 0 Ohm resistor R21 is implemented in series for an optional current limitation.
UART
PA10
PA9
+3V3
DGND
DGND
+3V3 +3V3
FGND
C39
100nF
C39
100nF
C40
100nF
C40
100nF
TP6
SMD
TP6
SMD
J4J4
5
4
3
2
1
9
8
7
6
10
11
R36
100K
R36
100K
R39 0RR39 0R
C38
100nF
C38
100nF
TP7
SMD
TP7
SMD
C41
100nF
C41
100nF
R40 0RR40 0R
R41 0RR41 0R
C42
100nF
C42
100nF
MN8
MAX3232CSE
MN8
MAX3232CSE
T1IN
11
T2IN
10 R1OUT
12
R2OUT
9
T1OUT 14
T2OUT 7
R1IN 13
R2IN 8
V+
2
C1+ 1
C1- 3
C2+ 4
C2- 5
V-
6
VCC
16
GND
15
R35
100K
R35
100K
LCD
SPI MOSI
SPI CLK
NPCS_LCD
LED_A
PA14
PA13
PA29
LED_K3
PA28
LED_K2
LED_K1
PA30
DGND
+3V3
DGND
R19 0RR19 0R
R60
47K
R60
47K
MN6
TM020GDZ18
MN6
TM020GDZ18
1
ID
NCS
2
SCL
3
SDA
4
RS
5
NREST
6
GND
7
IOVDD
8
VDD
9
LEDA
10
LEDK1
11
LEDK2
12
LEDK3
13
Y+
14
Y-
15
X+
16
X-
17
NC
18
C31
100nF
C31
100nF R18
47K
R18
47K
R21 0RR21 0R
+
C30
10uF
+
C30
10uF

Evaluation Kit Hardware
4-6 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
Figure 4-7. Backlight
4.3.9 JTAG/ICE
A standard 20-pin JTAG/ICE connector is implemented on the SAM3N-EK for the connection of a com-
patible ARM JTAG emulator interface, such as the SAM-ICE from Segger.
Notes: 1. The NRST signal is connected to BP1 system button. The 0 ohm resistor R30 may be
removed in order to isolate the JTAG port from this system reset signal.
2. The TDO pin is in input mode with the pull-up resistor disabled when the Cortex M3 is
not in debug mode. To avoid current consumption on VDDIO and/or VDDCORE due to
floating input, the internal pull-up resistor corresponding to this PIO line must be
enabled.
Figure 4-8. JTAG Connector
4.3.10 PWM Buzzer
A small, magnetic audio transducer connects through a MOSFET to PWM, allowing a range of options
for generating simple and complex tones.
Figure 4-9. PWM Buzzer
4.3.11 SD/MMC Card
The SAM3N has a high-speed 4-bit multimedia MMC interface, which is connected to a 4-bit SD/MMC
micro card slot featuring a card detection switch.
LCD BACKLIGHT
LED_A
PC13
LED_K1
LED_K2
LED_K3
+3V3
+3V3
DGND
DGND
R16
47K
R16
47K
R20
19.1k, 1%
R20
19.1k, 1%
C34
1uF
C34
1uF
C32
1uF
C32
1uF
MN5
AAT3193IJQ-1-T1
MN5
AAT3193IJQ-1-T1
C+ 4
C- 3
EN/SET
6
RSET
7OUT 2
IN
5
GND
8
D1 1
D2 10
D3 9
R17
0R
R17
0R
C33
4.7uF
C33
4.7uF
B1
BN03K314S300R
B1
BN03K314S300R
ICE INTERFACE
PB5
PB7
PB6
PB4
+3V3
DGND
PB[0..14]
NRST
R26
100K
R26
100K
R24
100K
R24
100K
R22
100K
R22
100K J2J2
VTref
1Vsupply 2
nTRST
3GND1 4
TDI
5GND2 6
TMS
7GND3 8
TCK
9GND4 10
RTCK
11 GND5 12
TDO
13 GND6 14
nSRST
15 GND7 16
DBGRQ
17 GND8 18
DBGACK
19 GND9 20
R25
100K
R25
100K
R23
100K
R23
100K
R30 0RR30 0R
PA1
DGND
+3V3
D5D5
B2
BN03K314S300R
B2
BN03K314S300R
R59
22R
R59
22R
MN9
SMD-050020F-03640
MN9
SMD-050020F-03640
+
1
-
2
Q2
IRLML2502
Q2
IRLML2502
1
32
R58
10K
R58
10K

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-7
11080C–ATARM–30-Mar-11
Figure 4-10. SD Card
4.3.12 Touch Elements
QTouch keys consist of a series of sensors formed by the association of a copper area and the capaci-
tive effect of human fingers approaching it.
Figure 4-11. QTouch Elements
Keys
The SAM3N-EK implements two individual capacitive touch keys (RIGHT, LEFT) using two pairs of
PIOs.
Slider
A group of channels forms a Slider. A Slider is composed of three channels for a QTouch acquisition
method using three pairs of PIOs. Such a sensor is used to detect a linear finger displacement on a sen-
sitive area. A typical slider implementation is volume control.
4.3.13 User Buttons
There are two mechanical user buttons on the SAM3N-EK, which are connected to PIO lines and
defined to be "left" and "right" buttons by default.
In addition, a mechanical button controls the system reset, signal NRST.
Micro SD CARD in SPI Mode
NPCS_MicroSD
SPI MOSI
SPI MISO
SPI CLK
PA14
PA11
PA13
PA19
PA12
DGND
+3V3
DGND
DGND
R37 0RR37 0R
R34
10K
R34
10K
R33
10K
R33
10K
C37
100nF
C37
100nF
R38 10RR38 10R
J3
TF01A
J3
TF01A
RSV(DAT2)
1
CS(DAT3)
2
DI(CMD)
3
VCC
4
CLK
5
VSS
6
DO(DAT0)
7
RSV(DAT1)
8
GND
10
CD
9
Sh1 11
Sh2 12
Sh3 13
RA1
47KX4
RA1
47KX4
1
2
3
4
5
6
7
8
+
C36
10uF
+
C36
10uF
QTOUCH
PC9
PC11
PC8
PC10
PC0
PC1
PC3
PC2
PC4
PC5
R55 1KR55 1K
S1
DNP
S1
DNP
SL
SM
SR
SR
K1
DNP
K1
DNP
C50
22nF
C50
22nF
C46
22nF
C46
22nF
R57 1KR57 1K
R54 1KR54 1K
C47
22nF
C47
22nF
K2
DNP
K2
DNP
C48
22nF
C48
22nF
R53 1KR53 1K
C49
22nF
C49
22nF
R56 1KR56 1K

Evaluation Kit Hardware
4-8 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
Figure 4-12. User Buttons
4.3.14 LEDs
There are four LEDs on the SAM3N-EK board:
A blue LED (D1), a green LED (D2), and an amber LED (D3) which are user-defined and controlled by
the GPIO.
A red LED (D4), which is a power LED indicating that the 3.3V power rail is active. It is also controlled
by the GPIO and can be treated as a user LED as well. The only difference with the three others is that
it is controlled through a MOS transistor. By default, the PIO line is disabled; a pull-up resistor controls
the MOS to light the LED when the power is ON.
Figure 4-13. LEDs
4.3.15 ZigBee
SAM3N-EK has a 10-pin male connector for the RZ600 ZigBEE module.
Note: 0 Ohm resistors have been implemented in series with the PIO lines that are used else-
where in the design, thereby enabling their individual disconnection, should a conflict occur
in your application.
Figure 4-14. ZigBee
4.3.16 PIO Expansion
The SAM3N product features three PIO controllers, PIOA, PIOB and PIOC, which are multiplexed with
the I/O lines of the embedded peripherals. Each PIO Controller controls up to 32 lines (15 for PIOB).
Expansion ports J5, J6 provide PIO lines access for customer defined usage.
BUT TONS
PA15
PA16
DGND
NRST
BP1BP1
1
42
3
BP3BP3
1
42
3
BP2BP2
1
42
3
PB14
PA25
PA0
PA23
+3V3
DGND
R44
470R
R44
470R
R42
470R
R42
470R
D4 Red-ledD4 Red-led
Q1
IRLML2502
Q1
IRLML2502
1
32
R45 100KR45 100K
D3 Amber-ledD3 Amber-led
R46
470R
R46
470R
D2 Green-ledD2 Green-led
D1 Blue-ledD1 Blue-led
R43
470R
R43
470R
IRQ0_ZBEE
IRQ1_ZBEE
CS
MISO
MOSI
SPCK
SLP_TR
ZB_RSTN
PA13
PC24
PA31
PA12 PA14
PC26PC25
PC23
DGND
+3V3
C43
18pF
C43
18pF
R52 0RR52 0R
R49 0RR49 0R
J7J7
1 2
3 4
5 6
7 8
910
R48 0RR48 0R
R47 0RR47 0R
R50 0RR50 0R
C44
2.2nF
C44
2.2nF
C45
2.2uF
C45
2.2uF
R51 10RR51 10R

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-9
11080C–ATARM–30-Mar-11
Note: All PIO lines are available on these expansion connectors, except those that are used for
the QTouch elements.
Figure 4-15. PIO Expansion
4.4 Configuration
This section describes the PIO usage, the jumpers, the test points and the solder drops of a SAM3N-EK
board.
4.4.1 PIO Usage
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PA19
PA17
PA21
PA16
PA20
PA18
PA27
PA29
PA26
PA30
PA31
PA28
PA25
PA24
PA23
PA22 PC12
PC13
PC14
PC15
PC16
PC17
PC18
PC19
PC20
PC21
PB10
PB11
PB12
PC6
PB14
PB13
PC24
PC23
PC22
PC25
PC27
PC26
PC29
PC30
PC31
PC28
PB2
PB1
PB4
PB5
PB6
PB3
PB0 PB7
+3V3 +3V3 +3V3+3V3
DGND DGND DGND DGND
+3V3 +5V +5V+3V3
PA[0..31]
PB[0..14]
PC[0..31]
JP9JP9
1
2
3
JP8JP8
1
2
3
J6J6
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
J5J5
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
Table 4-1. PIO Port A Assignment
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
PA0 PWM0 TIOA0 WKUP00 POWER LED Led Red
PA1 PWM1 TIOB0 WKUP01 CMD_SOUND BUZZER
PA 2 P W M 2 S C K 0 DAT R G W K U P 0 2
PA 3 T W D 0 N P C S 3 W K U P 0 3
PA 4 T W C K 0 T C L K 0
PA5 RXD0 NPCS3 WKUP04
PA 6 T X D 0 P C K 0
PA7 RTS0 PWM3 XIN32 32K Crystal
PA8 CTS0 ADTRG WKUP05 XOUT32 32K Crystal
PA9 URXD0 NPCS1 WKUP06 RX_UART0 UART
PA10 UTXD0 NPCS2 TX_UART0 UART
PA11 NPCS0 PWM0 WKUP07 SPI_NPCS0# MicroSD

Evaluation Kit Hardware
4-10 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
PA12 MISO PWM1 SPI_MISO
LCD
MicroSD
DataFlash
Zigbee
PA13 MOSI PWM2 SPI_MOSI
LCD
MicroSD
DataFlash
Zigbee
PA14 SPCK PWM3 WKUP08 SPI_SPCK
LCD
MicroSD
DataFlash
Zigbee
PA15 TIOA1 WKUP14 PB_LEFT# Push Button Left
PA16 TIOB1 WKUP15 PB_RIGHT# Push Button Right
PA17 PCK1 AD0
PA18 PCK2 AD1
PA19 AD2/ WKUP09 MicroSD_CD MicroSD
PA20 AD3/ WKUP10
PA21 RXD1 PCK1 AD8
PA22 TXD1 NPCS3 AD9 SPI_NPCS3# DataFlash
PA23 SCK1 PWM0 USR_LED1# Led Blue
PA24 RTS1 PWM1
PA25 CTS1 PWM2 USR_LED3# Led Amber
PA 2 6 T I O A 2
PA 2 7 T I O B 2
PA28 TCLK1 RS_LCD LCD
PA29 TCLK2 RST_LCD LCD
PA30 NPCS2 WKUP11 SPI_NPCS2# LCD
PA31 NPCS1 PCK2 SPI_NPCS1# ZigBee
Table 4-1. PIO Port A Assignment (Continued)
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
Table 4-2. PIO Port B Assignment
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
PB0 PWM0 AD4
PB1 PWM1 AD5
PB2 URXD1 NPCS2 AD6/ WKUP12
PB3 UTXD1 PCK2 AD7
PB4 TWD1 PWM2 TDI JTAG
PB5 TWCK1 WKUP13 TDO/
TRACESWO JTAG

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-11
11080C–ATARM–30-Mar-11
PB6 TMS/SWDIO JTAG
PB7 TCK/SWCLK JTAG
PB8 XOUT_12M 12M Crystal
PB9 XIN_12M 12M Crystal
PB10
PB11
PB12 ERASE JUMPER
PB13 PCK0 DAC0
PB14 NPCS1 PWM3 USR_LED2# Led Green
Table 4-2. PIO Port B Assignment (Continued)
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
Table 4-3. PIO Port C Assignment
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
PC0 QT_SL_SNS QTOUCH_SLIDER
PC1 QT_SL_SNSK QTOUCH_SLIDER
PC2 QT_SM_SNS QTOUCH_SLIDER
PC3 QT_SM_SNSK QTOUCH_SLIDER
PC4 NPCS1 QT_SR_SNS QTOUCH_SLIDER
PC5 QT_SR_SNSK QTOUCH_SLIDER
PC6
PC7 NPCS2
PC8 PWM0 QT1_ SNS QTOUCH_KEY_Left
PC9 PWM1 QT1_ SNSK QTOUCH_KEY_Left
PC10 PWM2 QT2_ SNS QTOUCH_KEY_Right
PC11 PWM3 QT2_ SNSK QTOUCH_KEY_Right
PC12 AD12
PC13 AD10 EN_LCD LCD
PC14 PCK2
PC15 AD11
PC16 PCK0
PC17 PCK1
PC18 PWM0
PC19 PWM1
PC20 PWM2
PC21 PWM3
PC22 PWM0 AD16
PC23 TIOA3 ZB_RSTN ZigBee

Evaluation Kit Hardware
4-12 SAM3N-EK Development Board User Guide
11080C–ATARM–30-Mar-11
4.4.2 Jumpers
The SAM3N-EK board jumpers are used for many purposes such as internal Flash Memory reinitializa-
tion, power current measurement and other configurations.
4.4.3 Test Points
Some test points have been placed on the SAM3N-EK board for the verification of important signals.
PC24 TIOB3 ZB_IRQ0 ZigBee
PC25 TCLK3 ZB_IRQ1 ZigBee
PC26 TIOA4 ZB_SLPTR ZigBee
PC27 TIOB4
PC28 TCLK4
PC29 TIOA5 AD13
PC30 TIOB5 AD14
PC31 TCLK5 AD15
Table 4-3. PIO Port C Assignment (Continued)
I/O Line Peripheral A Peripheral B Peripheral C Extra Function EK Usage Device
Table 4-4. Jumpers
Designation Label
Default
Setting Feature
JP1 JTAGSEL OPEN
Close it to reinitialize the Flash content and some
of its NVM bits.
This jumper must be closed for more than 220 ms
at power-up to perform the reinitialization.
JP2 ADVREF CLOSE Analog reference voltage selection, access for
external reference voltage
JP3 PB12 OPEN ERASE, Close to reinitialize the Flash contents and
some of its NVM bits
JP4 VDDIO CLOSE Access for current measurement on VDDIO
JP5 VDDIN CLOSE Access for current measurement on VDDIN
JP6 VDDPLL CLOSE Access for current measurement on VDDPLL
JP7 VDDCORE CLOSE Access for current measurement on VDDCORE
JP8 +3V3 1-2 DC voltage selection between 3.3V and 5V on PIO
expansion ports, default for 3.3V
JP9 +3V3 1-2 DC voltage selection between 3.3V and 5V on PIO
expansion ports, default for 3.3V
Table 4-5. Test Points
Designation Part Description
TP1 Ring Hook +5V
TP2 Ring Hook +3V3
TP3 Ring Hook GND
TP4 Ring Hook GND

Evaluation Kit Hardware
SAM3N-EK Development Board User Guide 4-13
11080C–ATARM–30-Mar-11
4.4.4 Assigned PIO Lines, Disconnection Possibility
As pointed out in previous interface descriptions, 0-Ohm resistors have been inserted on the PIO lines
receiver path of the SAM3N-EK. Some PIO lines are connected to an external driver on the board. The
0-Ohm resistors allow disconnecting each of these for custom usage (through PIO expansion connec-
tors, for example). This feature gives the user an added level of versatility for prototyping a system of his
own. See the table below.
TP5 Ring Hook GND
TP6 Pad UTXD0
TP7 Pad URXD0
Table 4-5. Test Points (Continued)
Designation Part Description
Table 4-6. Disconnection Possibility
Designation Default Assignment PIO
R2 XIN PB9
R3 XOUT PB8
R9, R5 XIN32 PA7
R4, R10 XOUT32 PA8
R17 EN_LCD PC13
R39 URXD0 PA9
R40 UTXD0 PA10
R47 ZB_RSTN PC23
R48 IRQ1_ZBEE PC25
R49 IRQ0_ZBEE PC24
R50 SLP_TR PC26