Atmel: ATSAM3S-EK2 Evaluation Kit

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Kit Overview

The Atmel ATSAM3S-EK2ATSAM3S-EK2 Evaluation Kit lets designers quickly evaluate and develop code for applications running on Atmel SAM3S microcontrollers. The Atmel® SAM3S Cortex™ M3 Flash MCU integrates features to simplify system design and reduce power consumption down to 2.3 mW at 1 MHz, 1.45mW/MHz at 64 MHz operation and 1.6 uA in backup mode with the RTC running. Inspired by the best-selling SAM7S series, the SAM3S is the ideal migration path to a more powerful and feature-rich MCU. A renewed peripheral set provides system control, sensor interfaces, an optional external parallel bus interface, connectivity and user interface support.


The SAM3S is the first ARM® MCU with parallel data capture mode on PIOs and DMA support. The parallel data capture mode on the PIOs complements the external bus interface for data collection from external devices that are not compliant with standard memory read protocols, such as low-cost image sensors. Integrated serial resistors eliminate the need for external resistors to preserve signal integrity, resulting in reduced BOM cost, real estate savings and simplified system design.


The SAM3S series is touch-ready, offering native support for Atmel QTouch® technology for easy implementation of buttons, sliders and wheels in your application. Memory protection unit improves code protection and secures multi-application/task execution. Unique 128-bit ID and scrambled external bus interface ensure software confidentiality while the hardware CRC checks memory integrity.


Key Applications: Building Automation, Home Entertainment, Industrial Automation, Metering, Mobile Electronics and PC Peripherals.

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Development Tools


Software Development Tools:


Tool TypeSupplierSupported FamilyMPNDescription

ARM Cortex-M


Atmel Studio 6 IDE

Atmel Studio 6 Integrated Development Environment (IDE) is the integrated development environment (IDE) for developing and debugging Atmel ARM® Cortex™-M and Atmel AVR® microcontroller (MCU) based applications. The Atmel Studio 6 IDE gives you a seamless and easy-to-use environment to write, build and debug your applications written in C/C++ or assembly code. Learn More


The ARM Development Studio 5 (DS-5) tool enable developers to get the best from their ARM technology-based systems. Whether implementing an ARM processor-based SoC or writing software for an Application Specific Standard Product (ASSP), ARM tools enable you to deliver the best solution with the highest performance and lowest power. Learn More


The MDK-ARM (Microcontroller Development Kit) is the complete software development environment for ARM7, ARM9, Cortex-M, and Cortex-R4 processor-based devices. Learn More

RTOSMicriumARM7 / AMR9 / AVR / AVR32Micrium uc/OSIII

μC/OS-III is Micrium’s newest RTOS, designed for developers who need to save time on their current and next embedded sytem projects. Learn More


The Keil RTX is a royalty-free, deterministic Real-Time Operating System designed for microcontrollers based on ARM7™TDMI, ARM9™, and Cortex™-M CPU cores. Learn More


SEGGER embOS (Real Time Operating System) follows strict, yet efficient coding and documentation standards. embOS is a priority-controlled real time operating system, designed to be used as foundation for the development of embedded real-time applications. Learn More


Hardware Development Tools:


Tool TypeSupplierSupported Family MPNDescription
Debuggers, Emulators & JTAG ToolsAtmelARMAT91SAM-ICEAT91SAM-ICEUSB JTAG In-Circuit Emulator for SAM3, SAM7 and SAM9 ARM-based microcontrollers
Debuggers, Emulators & JTAG ToolsARMALL ARMDSTRM-KT-0181ADSTRM-KT-0181ADSTREAM Debug and Trace Unit
Debuggers, Emulators & JTAG ToolsARMALL ARMULINK2ULINK2USB Debugger
Debuggers, Emulators & JTAG ToolsARMALL ARMULINKProULINKProHigh-Speed Debug and Trace Unit
Debuggers, Emulators & JTAG ToolsSeggerARM / CORTEX-M/A/RJ-LinkJ-LinkUSB JTAG Emulator
Debuggers, Emulators & JTAG ToolsSeggerALL ARM Cortex-MJ-Trace for Cortex-MJ-Trace for Cortex-MUSB JTAG Emulator
Debuggers, Emulators & JTAG ToolsSeggerALL ARMJ-Trace for ARMJ-Trace for ARMUSB JTAG Emulator
FlasherSeggerALL ARMFlasher ARMFlasher ARMARM & Cortex M Flash Programmer

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Technical Documents

Learning Center
User GuideAtmel: User Guide for ATSAM3S-EK2 Evaluation Kit
DatasheetAtmel: Datasheet for SAM3S16 series
Application NoteAtmel: Application note for  SAM3S Microcontroller Series Schematic Check List
Revision NoteAtmel: Demo Release Notes for ATSAM3S-EK2 Evaluation Kit


Design Elements
SchematicsAtmel: Schematics File for ATSAM3S-EK2 Dev Kit
LayoutAtmel: PCB Layout File for ATSAM3S-EK2 Dev Kit
BOMAtmel: BOM File for ATSAM3S-EK2 Dev Kit
Application LibraryAtmel: Design & Manufacturing Files For ATSAM3S-EK2 Evaluation Kit

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Kit Features



  • SAM3SD8SAM3SD8 LQFP100 chip with optional socket footprint
  • 12 MHz crystal
  • 32.768 KHz crystal
  • Optional SMB connector for external system clock input
  • NAND Flash
  • 2.8 inch TFT color LCD display with touch panel and backlight
  • UART port with level shifter circuit
  • USART port with level shifter circuit multiplexed with RS485 port with level shifter circuit
  • Microphone input and mono/stereo headphone jack output
  • SD/MMC interface
  • Reset button: NRST
  • User buttons: Left and Right
  • QTouch® buttons: Up, Down, Left, Right, Valid and Slider
  • Full Speed USB device port
  • JTAG/ICE port
  • On-board power regulation
  • Two user LEDs
  • Power LED
  • BNC connector for ADC input
  • BNC connector for DAC output
  • User potentiometer connected to the ADC input
  • ZigBEE connector
  • 2x32 bit PIO connection interfaces (PIOA, PIOC) and 1x16 bit PIO connection interface (PIOB)



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Kit Contents


The Atmel ATSAM3S-EK2ATSAM3S-EK2 evaluation kit supplied with below contents:

  • ATSAM3S-EK2 Evaluation Kit
  • Universal input AC/DC power supply with US, Europe and UK plug adapters
  • One serial RS232 cable
  • One micro A/B-type USB cable



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