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STM8T143 Fiches technique(PDF) 25 Page - STMicroelectronics

No de pièce STM8T143
Description  Single-channel capacitive sensor for touch and proximity detection
PDF  65 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8T143 Fiches technique(HTML) 25 Page - STMicroelectronics

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STM8T143
STM8T143 processing
64
5.6
Debounce filter
The purpose of the debounce filter mechanism is to reduce the effects of noise on the touch
and proximity detection. Debouncing is applied to acquisition samples to filter undesired
abrupt changes. The principle is to wait for several consecutive acquisitions with the signal
on the same side of a threshold before reporting the change in detection state induced by
this threshold crossing.
The number of consecutive detection debounce counts (DDC) and end of detection
debounce counts (EDDC) needed to identify a proximity/touch detection are defined in
Section 9.5: Capacitive sensing characteristics on page 42.



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