March 2015

DocID027335 Rev 2

1/19

1

AN4640

Application note

Peripherals interconnections on STM32F405/7xx, STM32F415/7xx,

STM32F42xxx, STM32F43xxx and STM32F446xx

Introduction

This application note describes how peripherals of the microcontrollers listed in Table 1 can

communicate autonomously without any intervention from the CPU via a network known as

Peripherals interconnect matrix.

This feature enhances the CPU real-time performance, while at the same time substantially

reducing its power consumption.

The document begins with the description of the Peripherals interconnect matrix features,

then it provides an overview of the peripherals configuration and their interconnections. An

example is presented and described in detail.

This application note has to be read in conjunction with reference manuals RM0090 and

RM0390, available at www.st.com/stm32.

Table 1. Applicable devices

Type

Product lines

Microcontrollers

STM32F405/415

STM32F407/417

STM32F427/437

STM32F429/439

STM32F446

www.st.com