AN3307 Datasheet, PDF (1/37 Pages) STMicroelectronics – Guidelines for obtaining IEC 60335 Class B certification for any STM32 application

AN3307
Application note
Guidelines for obtaining IEC 60335
Class B certification for any STM32 application
Introduction
The role of safety has become very important for electronics applications. The level of safety
requirements for components used in electronic designs is steadily increasing. The
manufacturers of electronic devices include many new technical solutions in the design of
new components. Software techniques for improving safety are continuously being
developed.
The current safety recommendations and requirements are specified at worldwide level by
recognized international standards bodies such as IEC (International Electrotechnical
Commission) and come under the compliance, verification and certification process of
testing houses and authorities like VDE (Association for Electrical, Electronic and
Information Technologies). The certification process is closely associated with
ElectroMagnetic Compatibility (EMC) tests when the robustness of the system against noise
emission and noise sensitivity is tested for compliance with international standards.
The main purpose of this application note and its associated software^(a) is to facilitate and
accelerate user software development and certification processes for appliances which are
subject to these requirements and certifications and are based on some of the ST 32-bit
family of microcontrollers.
There are three packages certified by VDE for 32-bit ST microcontrollers covering
STM32F0xx, STM32F1xx and STM32F3xx microcontroller families, referred to in this
document by STM32F. All certified packages are based on dedicated CMSIS and Standard
peripheral libraries and all of them use similar principles described by this document, with
focus on main differences. While using hardware and firmware compatibility between ST
families, these packages can also be adapted for some other ST 32-bit microcontrollers not
yet certified (for example, STM32F2xx, STM32F4xx, STM32Lxx or STM32Wxx families)^(b).
a. All the Class B firmware packages are available upon request only, please contact your nearest ST sales
office.
b. STMicroelectronics is developing derivative firmware supporting new products step by step. Please, contact
your local ST sales office to obtain the latest information about available packages and plans for their
certification.
April 2013
Doc ID 18186 Rev 4
1/37
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