A Freescale FRDM-K22F development board for Kinetis K22 microprocessors.  Pin compatible with Arduino R3 layout and devices.
Has a 120MHz MK22FN512VLH12 processor, based on ARM Cortex M4 architecture.  128kB of RAM, 512kB flash memory.

Full least of features can be found at this link:

https://os.mbed.com/platforms/FRDM-K22F/

  • NXP K22F Kinetis MCU (MK22FN512VLH12)
    • High performance ARM® Cortex™-M4 Core with FPU
    • 120MHz, 128kB RAM, 512kB FLASH
    • Crystal-less USB (Host/Device)
    • SPI (2)
    • I2C (2)
    • I2S (1)
    • UART (3)
    • PWM (16)
    • ADC (2x 16bit (w/ input mux))
    • DAC (2x 12bit)
    • GPIO (40)
    • Analog Comparator (2x w/ 6bit DAC)
  • FRDM-K22F Onboard Sensors
    • FXOS8700CQ - 3-axis accelerometer and 3-axis magetometer
    • Visible light sensor - ALS-PT19-315C/L177/TR8
    • 2 user push buttons
  • FRDM-K22F Optional Sensors
    • microSD card slot over SPI
    • header for RF module: nRF24L01+
    • header for Bluetooth module: JY-MCU BT (V1.05 BT)
  • Evalution Form factor
    • 81mm x 53mm
    • 5V USB or 4.5-9V supply
    • Built-in USB drag 'n' drop FLASH programmer
  • mbed HDK & SDK enabled
    • Drag-n-drop programming
    • USB Serial Port
    • CMSIS-DAP
    • Online development tools
    • Easy to use C/C++ SDK
    • Lots of published libraries and projects