STM32WBA50KG datasheet(29/110 Pages) STMICROELECTRONICS

Part #	STM32WBA50KG

Description	Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M33 with FPU, Bluetooth® 5.4 radio solution

PDF	110 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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29 / 110 page

DS14688 Rev 1

29/110

STM32WBA50KG

Functional overview

•

Peripheral clock sources: several peripherals have their own independent kernel clock

whatever the system clock. The PLL has three independent outputs allowing the

highest flexibility and can generate clocks for the ADC and the RNG.

•

Startup clock: after reset, the microcontroller restarts by default with the HSI16. The

prescaler ratio and clock source can be changed by the application program as soon

as the code execution starts.

•

CSS (Clock security systems): these features can be enabled by software.

–

If a HSE32 clock failure occurs, the system clock automatically switches to HSI16

and a software interrupt is generated if enabled.

–

LSE failure can also be detected and generates an interrupt, in this case the clock

switches to LSI.

•

Clock-out capability:

–

MCO (microcontroller clock output): outputs one of the internal clocks for external

use by the application. (only available in Run, Sleep and Stop mode)

–

LSCO (low-speed clock output): outputs LSI or LSE in all operating modes.

Several prescalers allow AHB and APB frequencies configuration. The maximum frequency

of the AHB and the APB clock domains is 100 MHz, except for AHB5 domain, limited to

32 MHz.

STM32WBA50KG Datasheet(PDF) 29 Page - STMicroelectronics