Freedom KL25Z development board

Freedom KL25Z is an ultra -ow-cost development board based on the Freescale MKL25Z128VLK4 processor (ARM Cortex M0+ core)

FRDM-KL25Z Features
KL25Z128VLK4-Cortex-M0+ MCU with:
128KB flash, 16KB SRAM
Up to 48MHz operation
USB full-speed controller
OpenSDA-sophisticated USB debug interface
Tri-color LED
Capacitive touch "slider"
Freescale MMA8451QR1 accelerometer
Flexible power supply options
Power from either on-board USB connector
Coin cell battery holder (optional population option)
5-12V Vin from IO header
5V provided to IO header
3.3V to or from IO header
Reset button
Expansion IO compatible with the Arduino Uno form factor