1.1 Features

The following is a list of the main components and interfaces on the AT32UC3L-EK:

  • Main MCU: Atmel AVR UC3 32-bit AT32UC3L064 (TQFP48)

    • 64KB internal flash, 16KB internal RAM

    • Up to 50MHz operation

    • Very low power consumption

    • Capacitive touch module for support of QTouch and QMatrix capture from capacitive touch sensors

    • Peripheral event system

    • FlashVault™ allows pre-programmed, secure library support for end user applications

  • One touch rotor and five touch sensors

  • One 3-axis accelerometer (connected to channels 6, 7, and 8 of the ADCIFB module)

  • One serial data flash, 64Mb

  • One RTC 32kHz crystal

  • Four LEDs

  • One pushbutton

  • One reset pushbutton

  • Wireless expansion connector for the RZ600 AT86RF231 radio board PCBA or for y SPI-based, TWI-based, or USART-based external communication

  • 36-pin raw expansion header for GPIO access

  • JTAG connector for programming and debugging on the AT32UC3L064 MCU

  • Powered through the USB connector, through an external power supply (header), or through a 1.2V battery (header J3)

  • USB (2.0 Mini-AB receptacle) connected to the 32-bit AVR UC3 AT32UC3B1256

    • AT32UC3L064 and AT32UC3B1256 are connected through two pins

    • One of the pre-loaded firmware on the AT32UC3B1256 acts as a UART-USB CDC virtual com port gateway

    • One of the pre-loaded firmware on the AT32UC3B1256 acts as UART-to-USB HID QTouch Debug interface to AVR QTouch Studio

    • USB mode pushbutton: with the default pre-loaded firmware on the AT32UC3B1256, the USB mode button is used to select between the UART-USB CDC virtual com port gateway firmware (press the USB mode upon power up of the board) and the UART-to-USB HID QTouch Debug interface to AVR QTouch Studio

    • The J12 jumper can be used to set the AT32UC3B1256 in boot loader mode at power up

    • JTAG connector for programming and debugging the AT32UC3B1256 (J13)