AN4299 Datasheet, PDF (1/20 Pages) STMicroelectronics – Immunity of touch sensing systems to conducted RF voltage is required

AN4299
Application note
Guidelines to improve conducted noise robustness on STM32F0,
STM32F3 and STM32L0 series touch sensing applications
Note:
Introduction
Immunity of touch sensing systems to conducted RF voltage is required at different level
depending on applications (home appliances, automotive, health care, …). Moreover, touch
sensing systems are often designed with the requirement to meet industry standards,
especially in the EMC compliance domain.
It is important to understand the environment in which the touch application will be used,
and apply adapted techniques to address the effects of unwanted noise disturbances.
This application note provides basic overview of conducted immunity testing and some
guidelines to keep the system reliable when it is exposed to conducted noise.
STMicroelectronics is providing free STMTouch touch sensing firmware libraries which are
available either as standalone packages (STM8L-TOUCH-LIB) or directly integrated into the
corresponding STM32Cube package (STM32CubeL0, STM32CubeF0, …).
Type
Microcontrollers
Table 1. Applicable products
Applicable products
STM32F0 series, STM32F3 series, STM32L0 series.
June 2014
DocID024663 Rev 2
1/20
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