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STM8T143 Datasheet(PDF) 22 Page - STMicroelectronics

Part # STM8T143
Description  Single-channel capacitive sensor for touch and proximity detection
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8T143 Datasheet(HTML) 22 Page - STMicroelectronics

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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:
1
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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