Freescale has just introduced the worlds smallest ARM Cortex powered microcontroller unit (MCU), the Kinetis KL02. As compared with the nearest competing MCU, the Kinetis consumes 25% less board area yet provides 60% more general purpose input-output (GPIO). Freescale has not identified the customer driver for this chip but a quick look at the datasheet may give us rough idea -- and it may be closer than you think.