STMicroelectronics, 32bit ARM Cortex M33, STM32 Microcontroller, 100MHz, 1024 Kbyte Flash, 48-Pin UFQFPN

The STMicroelectronics Microcontroller devices belong to multiprotocol wireless and ultra low power devices embed a powerful and ultra low power radio compliant with the Bluetooth SIG Low Energy specification 5.4. They operate at a frequency of up to 100 MHz. The devices integrate a 2.4 GHz RADIO supporting Bluetooth Low Energy, and make possible to use proprietary protocols.

Packet traffic arbitration
Integrated balun to reduce BOM
Single crystal operation
HASH hardware accelerator
Secure data storage with root hardware unique key