STMicroelectronics STM32WB15CCU7, 32bit ARM Cortex M0+, ARM Cortex M4 Microcontroller, STM32WB, 64MHz, 320 kB Flash,

The STMicroelectronics STM32WB15CC microcontroller is multiprotocol wireless and ultra-low-power device embeds a powerful and ultra-low-power radio compliant with the Bluetooth low energy SIG specification 5.2. It contains a dedicated arm cortex -M0+ for performing all the real-time low layer operation. The device embeds high-speed memories and an extensive range of enhanced I/Os and peripherals.

Support for external PA
Ultra-low-power platform
High speed internal 16 MHz factory trimmed RC
Programmable voltage detector
Supply and reset management