APPLICATION NOTE Atmel AVR32850: ATSAM4L-EK User Guide Atmel SAM4L Features • • • ATSAM4L-EK kit Board description Using the demonstration firmware Introduction The ATSAM4L-EK is a reference design and development system for the 32-bit ARM® Cortex™ -M4 ATSAM4LC4C microcontroller from Atmel® Corporation. The kit is equipped with a rich set of peripherals that make the ATSAM4L-EK a perfect evaluation platform. This guide shows the user how to quickly get started with this kit. 42026C−SAM4L−01/2013 1. SAM4L-EK Description 1.1 SAM4L-EK board features Characteristics Specifications MCU ATSAM4LC4C (256KB flash, 32KB RAM), powered in 3.3V Clock 12MHz crystal 32.768kHz crystal Connector 1x USB Micro AB for the main CPU ATSAM4LC4C 1x USB Micro B for embedded debugger Segger J-Link-OB 1x Audio jack connector (3.5mm) 1x Sensors Xplained board connector (2x 10-pin headers) 1x RS485 header (3-pin) Board power supply 5V DC from ATSAM4LC4C USB 5V DC from Segger J-Link-OB USB 5V DC from a 2-pin header Board monitor Dedicated MCU for power measurement of the ATSAM4LC4C (VDDIN, VDDIO, VDDANA) 1x OLED Display (128x64) 5x LEDs 1x joystick 1x USART connected to the ATSAM4LC4C MCU 1x TWI connected to the ATSAM4LC4C MCU 4x40 segment LCD Connected to the ATSAM4LC4C LCD interface Memory 1x serial flash AT25DF641A User interface for the ATSAM4LC4C 1x QTouch® button 1x QTouch slider 1x RESET button 1x push button (PB0) 1x LED (LED0) 1x light sensor Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 2 1.2 Board interface connection The following connections are supported by the board: • USB Micro B connector for the embedded debugger and serial debug COM port interface Segger J-Link OB (USB connector J1) • • • • • USB Micro AB connector for the ATSAM4LC4C USB interface (USB connector J305) 1x Wireless 10-pins interface (with support of both ATEXTBT and RF2xx interfaces) (10-pin headers J207) 1x audio jack connector 1x RS485 connector for industrial transmitter (RS485) 2-pin header for external power supply (5V DC) Figure 1-1. ATSAM4L-EK features overview. ATSAM4LC4C USB (J305) Board Monitor Program Selection (J7) 1x RS485 Segger J-Link OB USB connector (J1) 2-pin header for external power supply (5V) Power switch selector (USB or external) 1x OLED (board monitor) 5x LEDs (board monitor) 1x joystick (board monitor) 1x wireless interface (J207) 1x segment LCD 1x sensor Xplained connectors (J4-J5) 1x RESET push button 1x user input push button (PB0) 1x QTouch key (CS0) 1x LED 1x QTouch slider 1x audio jack 32kHz oscillator (12MHz oscillator on bottom side) Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 3 2. Board description 2.1 Hardware Figure 2-1. ATSAM4L-EK block diagram. External Memories QTouch LCD Segment User I/O Analog Jack Serial Flash SPI CATB VDDANA VDDIN VDDIO I/O Osc LCD ATSAM4LC4C System Controller 32KHz 12MHz Led USART TWI I/O ABDAC SPI DEBUG USART EIC Sensor Xplained Board USB USART USB RS485 Interface SWD SPI + IO Power PB0 Power Supply Board Monitor SAM4L power consumption Debugger (Segger J-Link OB) Wireless Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 4 2.2 Powering the board The ATSAM4L-EK offers three interfaces to power the board: • • • USB embedded debugger Segger J-Link OB (J1) USB ATSAM4LC4C (J305) External 5V (DC) source connected to the J303 2-pin header To select the USB or external power supply, a mechanical switch is used (SW300). The default kit configuration is using ATSAM4LC4C buck regulator configuration, where ATSAM4LC4C is powered at 3.3V (VDDIN, VDDIO, VDDANA). Figure 2-2. Power supply sources. (J1) USB Segger J-Link OB (J305) USB ATSAM4LC4C (J303) 5V external source Power switch (SW300) Power supply LED ATSAM4LC4C regulator configuration: Buck (default) or Linear (J107) By-pass Buck inductor (J108) when LDO regulator is used Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 5 2.3 Buttons / LED The ATSAM4L-EK is equipped with one user push button and one LED. The push buttons consist of momentary push button switches mounted directly to the board. When any switch is pressed it will cause a low (zero) to appear at the associated input pin. Table 2-1. 2.4 User I/O mapping. GPIO Feature PC03 Push button PB0 PC10 LED0 QTouch The ATSAM4L-EK is equipped with one QTouch button and one QTouch slider using three channels. Table 2-2. 2.5 QTouch I/O mapping. GPIO Feature PB04 QTouch Button PB02 QTouch Slider Channel 0 PA04 QTouch Slider Channel 1 PA05 QTouch Slider Channel 2 PB03 QTouch Discharge Pin RS485 The ATSAM4L-EK is equipped with a RS485 interface. To enable the RS485 connector: • • Close J200 and J203 jumpers Open J600 and J601 jumpers Table 2-3. 2.6 RS485 I/O mapping. GPIO Feature Jumper PA06 USART_RTS PA08 USART_CTS J104.2 to J104.3 PC02 USART_RXD Close J200 and J203 PA07 USART_TXD Open J600 and J601 Light Sensor (ADC) The ATSAM4L-EK is equipped with one light sensor connected to one of the ADC channel. To enable it, close the jumper J101.2 to J101.3. Table 2-4. Light sensor I/O mapping. GPIO Feature Jumper PB05 ADC Channel Close J101.2 to J101.3 Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 6 2.7 Serial Flash The ATSAM4L-EK is equipped with one serial flash AT25DF641, connected through SPI. Table 2-5. 2.8 Serial Flash I/O mapping. GPIO Feature PC04 SPI_MISO PC05 SPI_MOSI PC06 SPI_SCK PC00 SPI_CS Audio The ATSAM4L-EK is equipped with one audio amplifier. To enable it, close J105.2 to J105.3 jumper. Table 2-6. 2.9 Audio I/O mapping. GPIO Feature Jumper PC09 Audio ABDAC Channel 0 Close J105.2 to J105.3 PC13 Audio ABDAC Channel 1 Close J105.2 to J105.3 SAM4LC4C USB The ATSAM4L-EK is equipped with one USB connector for the SAM4LC4C USB. Table 2-7. 2.10 USB I/O mapping. GPIO Feature Jumper PA25 USB DM PA26 USB DP PB05 USB ID pin (GPIO) Close J101.1 to J101.2 PC07 USB Over current Detected (GPIO) Close J103.1 to J103.2 PC08 USB Over current Enabled (GPIO) Close J104.1 to J104.2 Wireless The ATSAM4L-EK is equipped with one 10-pin Wireless extension connector, to connect other Atmel boards like ATEXTBT or AT86RF2xxx. Table 2-8. Wireless I/O mapping. GPIO Feature PC04 SPI_MISO PC05 SPI_MOSI PC06 SPI_SCK PA02 SPI_CS Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 7 2.11 Sensors Xplained connection The ATSAM4L-EK is equipped with one Sensor Xplained extension connector. To enable it, close J102.2 to J102.3 jumpers. Table 2-9. 2.12 Sensors Xplained I/O mapping. GPIO Feature PC04 SPI_MISO PC05 SPI_MOSI PC06 SPI_SCK PC01 SPI_CS Jumper Close J102.2 to J102.3 Embedded Debugger The embedded debugger J-Link OB Module is provided by Segger, featuring: • • • 1x JTAG interface to the ATSAM4LC4C 1x UART interface to the ATSAM4LC4C 1x USB interface for a PC host The USART connection between the ATSAM4LC4C and the J-Link OB Module is configured as follow: Table 2-10. Embedded Debugger I/O mapping. 2.13 GPIO Feature PC11 USART_RX PC12 USART_TX Custom Glass Display This board is equipped with a 4x40 segment LCD, connected to the ATSAM4LC4C device through the LDCA controller. Figure 2-3. ATSAM4LC4C on-board custom glass display. Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 8 2.14 Board Monitor The board monitor features: • • • • • 1x OLED Display (128x64) 5x LEDs 1x joystick 1x USART connected to the ATSAM4LC4C MCU 1x TWI connected to the ATSAM4LC4C MCU The USART connection between ATSAM4L and the board monitor is configured as: Table 2-11. Board Monitor I/O mapping. GPIO Feature Jumper PC02 USART_RX Close J600.1 to J600.2 PA07 USART_TX Close J601.1 to J601.2 Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 9 3. Using the preloaded firmware The SAM4L-EK firmware demo features: • • • Low power architecture: • Display ATSAM4LC4C power consumption on the board monitor OLED display • Use of the Power Save Mode • Use of the Power Scaling Mode (PS0 or PS1) Segment LCD controller: • Text display text and text scrolling • Hardware automatic animations Hardware touch (QTouch) support: • 3.1 One capacitive button and one slider Power-on the board • Power the board through the USB connector J1. The board starts the embedded debugger J-Link-OB USB enumerations • If you do not have installer Atmel Studio 6, install the Segger J-Link OB driver available here: http://www.segger.com/jlink-software.html Caution: Do not plug any USB cable on USB connector J305 as it will increase power consumption figures for the demo. Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 10 3.2 Running the Demonstration Firmware 3.2.1 Mode 1: “startup, RUN mode” (after power-on reset) • ATSAM4LC4C is in active mode (12MHz on RC4M) with segment LCD and QTouch enabled. The ATSAM4LC4C starts with power scaling enabled (PS1) • ATSAM4LC4C displays on the segment LCD: • A scrolling text message “SAM4L-EK Demo” • Scrolling animation to show SAM4L is in active mode • ATSAM4LC4C sends through the USART its internal status to the board monitor (power save mode, voltage scaling, CPU frequency and clock source) • The board monitor displays on the OLED display the power consumption, power save mode, power scaling mode, CPU frequency and clock source of ATSAM4LC4C ATSAM4LC4C Status Voltage scaling Powersave mode • CPU frequency Clock source After 5 seconds, the demo moves to mode 2 Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 11 3.2.2 3.2.3 Mode 2 “RUN mode with all features” • The ATSAM4LC4C is in RUN mode. ATSAM4LC4C displays the voltage scaling mode (PS1 or PS0) on the segment LCD and its active mode (RUN) • • • Using QTouch capacitive button CS0 will change voltage scaling configuration (PS1 or PS0) • Using PB0 button will disable QTouch and segment LCD, the demo move to mode 3 The QTouch slider position will be displayed (0 … 255) if QTouch slider event is detected The ATSAM4LC4C sends its internal status through USART to the board monitor (power save mode, voltage scaling, CPU frequency and clock source) each time it changes Mode 3 “RUN mode with no features” • The ATSAM4LC4C in active mode (12MHz on RC4M) with power scaling mode PS1. QTouch and LCD are disabled. The AST is still running with external OSC32K oscillator • • The ATSAM4LC4C is executing the Fibonacci algorithm Using PB0 button will enter the WAIT Power Save Mode and move the demo to mode 4 Segment LCD OLED Display 10 1mA LCD is off 100uA 10 1uA RUN 100 uA/MHz 1.20 mA RC4M 12MHz PS1 12MHz RC4M Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 12 3.2.4 3.2.5 Mode 4 “WAIT mode” • The ATSAM4LC4C is in WAIT mode with power scaling mode PS1. The AST is still running with external OSC32K oscillator • The ATSAM4LC4C sends its new internal status through USART to the board monitor (power save mode, voltage scaling, CPU frequency and clock source). The Board monitors displays a splash screen indicating the new Power Save Mode (WAIT here) • Using PB0 button will enter the RETENTION Power Save Mode and move the demo to mode 5 Mode 5 “RETENTION mode” • The ATSAM4LC4C in RET mode with power scaling configuration PS1. The external OSC32K oscillator is still running • The ATSAM4LC4C sends its new internal status through USART to the board monitor (power save mode, voltage scaling, CPU frequency and clock source) • Using PB0 button will enter the BACK-UP Power Save Mode and move the demo to mode 6 Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 13 3.2.6 Mode 6 “BACKUP mode” • The ATSAM4LC4C is in backup mode with power scaling mode PS1. The external OSC32K oscillator is still running • The ATSAM4LC4C sends its new internal status through USART to the board monitor (power save mode, voltage scaling, CPU frequency and clock source) • Using PB0 button will go back to mode 1 in RUN mode Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 14 4. Board Monitor 4.1 Measurement Stage The board monitor is in charge of current consumption measurement of the ATSAM4LC4C (VDDIN, VDDIO, VDDANA). The current measurement stage works in the range 1µA to 50mA. The sampling rate of the current measurement stage is 8kHz. Each current measure is filtered at 50Hz. The accuracy is: - 10% of error on the measure in the range 1µA to 10µA - 1% of error on the measure in the range 10µA to 50mA 4.2 Commands between SAM4L and Board Monitor 4.2.1 Register Map Offset Name 0x01 BM_POINTER_CTRL 0x02 Description Confirm available in firmware version W Enable/disable the board monitor mouse-like pointer 1.2 and above BM_POINTER_MOVE W Send new mouse pointer position 1.2 and above 0x03 BM_CTRL W Enable/disable the board monitor 1.2 and above 0x04 BM_LED_SET W Turn-on a LED of the board monitor 1.2 and above 0x05 BM_LED_CLR W Turn-off a LED of the board monitor 1.2 and above 0x06 BM_LED_TGL W Toggle a LED of the board monitor 1.2 and above 0x07 BM_MCU_STATUS W Send MCU power saving information to the board monitor, in order to get them displayed on the OLED screen 1.2 and above 0x08 BM_PULLUP_TWI W Enable/disable the pull-up on TWI lines 1.3* and above 0x09 BM_PICOUART_SEND W Send PicoUart Frame 1.3* and above 0x0A BM_MCU_GET_CURRENT W Send Current Consumption Measured Request 1.3* and above 0x0B BM_TGL_BUTTON W Force Toggle of Button Line 1.3* and above 0x0C BM_MCU_RET_CURRENT R Return Current Consumption Measured 1.3* and above 0x0D BM_MCU_GET_FIFO_FREE_SIZE W Send free size (in byte) of the board monitor command fifo request 1.3* and above 0x0E BM_MCU_RET_FIFO_FREE_SIZE R Return the free size (in byte) of the board monitor command fifo 1.3* and above 0x0F BM_PRINT_TEXT W Print Text On Board Monitor 1.3* and above 0x10 BM_PRINT_CLEAR W Clear Print Text Area 1.3* and above 0x11 BM_GET_FIRMWARE_VERSION W Send Firmware Version Request 1.3* and above 0x12 BM_RET_FIRMWARE_VERSION R Return Firmware Version value 1.3* and above Note: Type Board Monitor firmware 1.3 is available from ASF release 3.6. Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 15 4.2.2 APIs available for SAM4L 188.8.131.52 BM_POINTER_CTRL – Board Monitor Pointer Control Prototype: void bm_mouse_pointer_ctrl(bool state); Parameter(s): state true to enable, false to disable. Return Value: None. 184.108.40.206 BM_POINTER_MOVE – Board Monitor Pointer Move Prototype: void bm_mouse_pointer_move(uint32_t x, uint32_t y); Parameter(s): x x position. Range is [0; 127]. y y position range is [0; 63]. Return Value: None. 220.127.116.11 BM_CTRL – Board Monitor Control Prototype: void bm_ctrl(bool state); Parameter(s): state true to enable, false to disable. Return Value: None. 18.104.22.168 BM_LED_SET – Board Monitor Led Set Prototype: void bm_led_set(uint32_t led); Parameter(s): led led number. Range is [0; 3]. Return Value: None. 22.214.171.124 BM_LED_CLR – Board Monitor Led Clear Prototype: void bm_led_clr(uint32_t led); Parameter(s): led led number. Range is [0; 3]. Return Value: None. 126.96.36.199 BM_LED_TGL – Board Monitor Led Toggle Prototype: void bm_led_tgl(uint32_t led); Parameter(s): led led number. Range is [0; 3]. Return Value: None. Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 16 188.8.131.52 BM_MCU_STATUS – Board Monitor Status Prototype: void bm_send_mcu_status(uint32_t voltage_scaling, uint32_t sleep_mode, uint32_t cpu_freq, uint32_t cpu_src); Parameter(s): voltage_scaling Voltage scaling. sleep_mode Sleep mode. cpu_freq CPU frequency. CPU source clock. Return Value: None. 184.108.40.206 BM_PULLUP_TWI – Board Monitor Pull-up TWI Prototype: void bm_pullup_twi(bool state); Parameter(s): voltage_scaling Voltage scaling. sleep_mode Sleep mode. cpu_freq CPU frequency. CPU source clock. Return Value: None. 220.127.116.11 BM_PICOUART_SEND – Board Monitor PicoUart Send Prototype: void bm_send_picouart_frame(uint8_t frame, uint32_t timeout_ms); Parameter(s): frame Frame to be sent. timeout timeout_ms Value in ms. Return Value: None. 18.104.22.168 BM_MCU_GET_CURRENT – Board Monitor Get Current Prototype: bool bm_get_mcu_current(uint32_t* sleep_mode, float* current); Parameter(s): sleep_mode Sleep Mode Desired. current Current Value Measured. Return Value: True: Current Value is available. 22.214.171.124 BM_TGL_BUTTON – Board Monitor Toggle Button Prototype: bool bm_get_mcu_current(uint32_t* sleep_mode, float* current); Parameter(s): sleep_mode Sleep Mode Desired. current Current Value Measured. Return Value: True: Current Value is available. Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 17 126.96.36.199 BM_MCU_GET_FIFO_FREE_SIZE – Board Monitor Get Free Fifo Size Prototype: bool bm_get_fifo_free_size(uint16_t* free_size); Parameter(s): free_size free size in byte. Return Value: True: Current Fifo Size is available. 188.8.131.52 BM_PRINT_TEXT – Board Monitor print text Prototype: void bm_print_txt(uint8_t* str, uint8_t str_length); Parameter(s): str String pattern. str_length String length pattern. Return Value: None. 184.108.40.206 BM_PRINT_CLEAR – Board Monitor clear Prototype: void bm_print_clear(void); Parameter(s): None. Return Value: None. 220.127.116.11 BM_GET_FIRMWARE_VERSION – Board Monitor get firmware version Prototype: void bm_get_firmware_version(uint8_t *fw_version_minor, uint *fw_version_major); Parameter(s): fw_version_minor Minor number of firmware version. fw_version_major Major number of firmware version. Return Value: None. 4.3 Re-program the board monitor 1. 2. 3. 4. 5. Open dos command Go into <Atmel Studio Installation Path>/ avrdbg Unzip ATSAM4L-EK_BoardMonitor.zip in this folder Close J7 header to select Board Monitor programming (see Figure 1-1) Type: atprogram –t samice –i swd –d ATSAM3N4A program –c –f sam.applications.sam4l_ek_demo.board_monitor.sam3n_ek_vx.y.bin –o 0x400000 Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 18 5. Errata Bug Description Errata Impacted version #1 Audio jack connection is wrong (J202). Rework J202 connection by cutting off the connection of J202.5: connect J202.1 to left side of C202 and connect J202.2, J202.3 and J202.5 to GND. Rev 2 #2 Q301 is mounted in the wrong way. None. Rev 2 #3 USART CTS/RTS signals are not correctly routed to RS485 transceiver (U200). Follow this connection to make RS485 connection works: - PA06 (USART0_RTS), - PC08 (USART0_CTS), - PC02 (USART0_RXD), - PA07 (USART0_TXD). To do so: - Connect J100.2 to J103.3 with a wire, - Close J104.2 to J104.3, - Close J200, - Close J203, - Open the J600 and J601. Rev 2 #4 J4 and J5 connectors must be swapped in order to correctly follow Xplained Board Pinout. In order to use Sensors Xplained board, plug J1 header of Sensors Xplained board on J4 header of SAM4L-EK. All #5 Vbus monitor through PA06 can not be used. None. All Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 19 6. References and further information 6.1 Device datasheet The device datasheet contains block diagrams of the peripherals and details about implementing firmware for the device. It also contains the electrical specifications and expected characteristics of the device. The datasheet is available on http://www.atmel.com/ in the Datasheets section of the product page. 6.2 Detailed hardware references (and associated errata) More detailed hardware information for this kit can be found in the file ATSAM4L-EK_Hardware-References.zip available on the Atmel web page dedicated to this kit: www.atmel.com/ The ATSAM4L family of devices is specified in the SAM4L Series datasheet. Always use this document as a reference throughout the development life cycle of an application destined to run on a SAM4L device. 6.3 Tools To be able to develop applications for 32-bit ARM devices and build binaries for ARM targets and program a 32-bit ARM device, Atmel and its partners provide several tools supported on multiple host targets. • Atmel Studio 6 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. http://www.atmel.com/microsite/atmel_studio6/default.aspx • IAR Embedded Workbench®: IAR™ Embedded Workbench with its optimizing C and C++ compiler provides full support and generates very compact and efficient code for ARM device. http://www.iar.com/en/Products/IAR-Embedded-Workbench/ARM/ Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 20 7. Revision history Doc. Rev. Date Comments 42026C 01/2013 Errata added. 42026B 12/2012 -“sleep mode” has been replaced by “power save mode” Section 3.2 is updated: -Updated OLED display screenshots -Added comment for QTouch slider management in the demo Chapter 4 is added. 42026A 09/2012 Initial document release Atmel AVR32850: ATSAM4L-EK User Guide [APPLICATION NOTE] 42026C−SAM4L−01/2013 21 Atmel Corporation Atmel Asia Limited Atmel Munich GmbH Atmel Japan G.K. 1600 Technology Drive Unit 01-5 & 16, 19F Business Campus 16F Shin-Osaki Kangyo Building San Jose, CA 95110 BEA Tower, Millennium City 5 Parkring 4 1-6-4 Osaki USA 418 Kwun Tong Road D-85748 Garching b. Munich Shinagawa-ku, Tokyo 141-0032 Tel: (+1)(408) 441-0311 Kwun Tong, Kowloon GERMANY JAPAN Fax: (+1)(408) 487-2600 HONG KONG Tel: (+49) 89-31970-0 Tel: (+81)(3) 6417-0300 www.atmel.com Tel: (+852) 2245-6100 Fax: (+49) 89-3194621 Fax: (+81)(3) 6417-0370 Fax: (+852) 2722-1369 © 2013 Atmel Corporation. All rights reserved. / Rev.: 42026C−SAM4L−01/2013 Atmel®, Atmel logo and combinations thereof, AVR®, DataFlash®, Enabling Unlimited Possibilities®, QTouch®, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. ARM®, Cortex™ are registered trademarks or trademarks of ARM Ltd. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 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