STM8T143 datasheet(22/65 Pages) STMICROELECTRONICS

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STM8T143 Arkusz danych(PDF) 22 Page - STMicroelectronics

Numer części	STM8T143

Szczegółowy opis	Single-channel capacitive sensor for touch and proximity detection

PDF	65 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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22 / 65 page

STM8T143 processing

STM8T143

22/65

DocID18315 Rev 6

5.5.2

ECS halt

As soon as a proximity detection is triggered, the ECS should be halted otherwise the ECS

considers the signal variation due to the user action as an environment change. In such a

case, the ECS adapts to the new conditions until the reference reaches the current signal

level generated by the user. This leads to a detection loss as described in Figure 13.

Figure 13. ECS halt

Note:

The dashed lines in Figure 13 represent the reference and thresholds if ECS is not halted.

In this case, detection is lost before the user exits the electrode detection area. The plain

lines represent normal device processing with the ECS stop.

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