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STM8T141 数据表(PDF) 14 Page - STMicroelectronics

部件名 STM8T141
功能描述  Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode
PDF  50 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM8T141 数据表(HTML) 14 Page - STMicroelectronics

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STM8T processing
STM8T141
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Doc ID 15699 Rev 7
Figure 8.
Environmental compensation filter (ECF) example 2
Detection
Reference - DTh
Environment changing
Number of counts
Reference
Signal
Zone 1
Zone 2
Zone 3
Zone 4
ai17429
t
Table 4.
Explanation of ECF example 2
Zone 1
Zone 2
Zone 3
Zone 4
Event description
The system
environment
changes and the
device adapts its
reference according
to this environment
change.
An object (finger) is
detected. The
environment continues
to change.
The object is still under
detection but, the
environment is not
changing anymore.
The object exits
from detection.
Detection operation
No detection
Detection
No detection
ECF state
Active
Halt
Active
Reference
Adapting
Frozen
Adapting
Surrounding
environment
Changing
Stable



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