STM32WB10CC datasheet(13/110 Pages) STMICROELECTRONICS

13 / 110 page

DS13259 Rev 2

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STM32WB10CC

Functional overview

3.1

Architecture

The STM32WB10CC multiprotocol wireless device embeds a BLE RF subsystem that

interfaces with a generic microcontroller subsystem using an Arm® Cortex®-M4 CPU (called

CPU1) on which the host application resides.

The RF subsystem is composed of an RF analog front end, BLE block as well as of a

dedicated Arm® Cortex®-M0+ microcontroller (called CPU2), plus proprietary peripherals.

The RF subsystem performs all of the BLE stack, reducing the interaction with the CPU1 to

high level exchanges.

Some functions are shared between the RF subsystem CPU (CPU2) and the Host CPU

(CPU1):



Flash memories



SRAM1, SRAM2a and SRAM2b (all can be retained in Standby mode)



Security peripherals (RNG, PKA)



Clock RCC



Power control (PWR)

The communication and the sharing of peripherals between the RF subsystem and the

Cortex®-M4 CPU is performed through a dedicated inter processor communication

controller (IPCC) and semaphore mechanism (HSEM).

3.2

Arm® Cortex®-M4 core with FPU

The Arm® Cortex®-M4 with FPU is a processor for embedded systems. It has been

developed to provide a low-cost platform that meets the needs of MCU implementation, with

a reduced pin count and low-power consumption, while delivering outstanding

computational performance and an advanced response to interrupts.

The Arm® Cortex®-M4 with FPU 32-bit RISC processor features exceptional



code-efficiency, delivering the high-performance expected from an Arm® core in the

memory size usually associated with 8- and 16-bit devices.

The processor supports a set of DSP instructions enabling efficient signal processing and

complex algorithm execution.

Its single precision FPU speeds up software development by using metalanguage

development tools, while avoiding saturation.

With its embedded Arm® core, the STM32WB10CC is compatible with all Arm® tools and

software.

Figure 1 shows the general block diagram of the device.

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