STM8T141 STMicroelectronics, STM8T141 Datasheet - Page 14

• Manufacturer Part Number: STM8T141
• Description: Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode
• Manufacturer: STMicroelectronics

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