The Kinetis KW41Z/31Z/21Z is built on ARM’s Cortex-M0+ core. With up to 512Kb of Flash and up to 128Kb of SRAM, its low-power, highly-integrated connectivity, security and analog capabilities make it an ideal solution for portable, battery powered applications. The KW41Z MCU features are shown on this slide. The complementary families to the KW41Z have all the same features, but support a single wireless protocol. The KW31Z has only Bluetooth connectivity, and the KW21Z has only 802.15.4 MAC/PHY and Simple MAC.