November 2012

Doc ID 15267 Rev 5

1/17

AN2860

Application note

EMC guidelines for STM8 microcontrollers

Introduction

To meet the demand for higher performance, complexity and cost reduction, the

semiconductor industry develops microcontrollers with both high density design technology

and higher clock frequencies. This has intrinsically increased the potential noise emission

and noise sensitivity. Therefore, application developers must now apply electromagnetic

compatibility (EMC) “hardening” techniques in the design of hardware, PCB layout, firmware

and at system level.

This application note is intended for application designers who need to reach the optimum

level of EMC performance. It gives an overview of microcontroller EMC features and

compliance standards. This document focuses on STM8 features and behaviors, and on the

differences between the STM8 family members.

Table 1.

Applicable products

Product family

Part numbers

Microcontrollers

– STM8S003xx, STM8S005xx, STM8S007C8

– STM8S103xx, STM8S903xx, STM8S105xx, STM8S207xx, STM8S208xx,

– STM8AF6x26/4x/66/68, STM8AF5xxx, STM8AF6x69/7x/8x/9x/Ax

– STM8L05xxx

– STM8L101xx

– STM8L151C2/K2/G2/F2 and STM8L151C3/K3/G3/F3

– STM8L151x4, STM8L151x6, STM8L152x4, STM8L152x6

– STM8L151x8, STM8L152x8, STM8L151R6, STM8L152R6, STM8L162R8,

STM8L162M8

– STM8AL313x, STM8AL314x, STM8AL316x, STM8AL3L4x, STM8AL3L6x

– STM8TL5xxx

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