Microcontroller 32-Bit ARM Cortex M4 1024KByte Flash 1.7V to 3.6V 100-Pin BGA
STM32WB Series 1 MB Flash memory 256 kB SRAM Programmable Bluetooth - UFBGA-129
Ultra-low-power dual core Arm Cortex-M4 MCU 64 MHz, Cortex-M0+ 32MHz with 1 Mbyte of Flash memory, Bluetooth LE 5.0, 802.15.4, Zigbee, Thread, USB, LCD, AES-256, -40°C to 85°C, UFBGA 7X7 129 B P 0.5, RoHS