STMicroelectronics STM32WB15CCU7E, 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 v5.2. 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.

Programmable output power up to +5.5 dBm with 1 dB steps
Integrated balun to reduce BOM
Support for 2 Mbps
Ultra low power platform
Supply and reset management