====== Stm32f4-discovery ======


The STM32F4DISCOVERY helps you to discover the STM32F4 high-performance features and to develop your applications easily. It includes everything required for beginners and experienced users to get started quickly.

Based on the STM32F407VGT6, it includes an ST-LINK/V2 embedded debug tool, two ST MEMS, digital accelerometer and digital microphone, one audio DAC with integrated class D speaker driver, LEDs and push buttons and an USB OTG micro-AB connector. 


**Features**

      * STM32F407VGT6 microcontroller featuring 32-bit ARM Cortex-M4F core, 1 MB Flash, 192 KB RAM in an LQFP100 package

      * On-board ST-LINK/V2 with selection mode switch to use the kit as a standalone ST-LINK/V2 (with SWD connector for programming and debugging)

      * Board power supply: through USB bus or from an external 5 V supply voltage

      * External application power supply: 3 V and 5 V

      * LIS302DL, ST MEMS motion sensor, 3-axis digital output accelerometer

      * MP45DT02, ST MEMS audio sensor, omni-directional digital microphone

      * CS43L22, audio DAC with integrated class D speaker driver

      * Eight LEDs:
          - LD1 (red/green) for USB communication
          - LD2 (red) for 3.3 V power on
          - Four user LEDs, LD3 (orange), LD4 (green), LD5 (red) and LD6 (blue)
          - 2 USB OTG LEDs LD7 (green) VBus and LD8 (red) over-current

     *  Two push buttons (user and reset)

     *  USB OTG FS with micro-AB connector

     *  Extension header for all LQFP100 I/Os for quick connection to prototyping board and easy probing


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Reference: http://www.st.com/jp/evalboard/product/252419.jsp