https://www.nxp.com/products/KW20Z?tab=Buy_Parametric_Tab
Arm Cortex-M0+|Kinetis KW20Z 2.4 GHz 32-bit MCUs | NXP Semiconductors
Wireless communication MCU combining 2.4 GHz radio with ARM Cortex-M0+ core for energy-efficient IoT and personal area network applications