Shown here is the fact that the KL03 device is smaller than a golf ball dimple and the device is 35% smaller than the nearest competition, but still offers more GPIO than the competition. With a tiny footprint package of 1.6 x 2.0mm² WLCSP, the KL03 device includes: Run power consumption as low as 50μA/MHz, Static power consumption as low as 2.2μA with 7.5μs wake-up time for full retention and lowest static mode down to 77nA in deep sleep, and Highly integrated peripherals, including boot ROM and high accurate internal voltage reference.