5.5 Sensors
• It is recommended to use the same shape for all electrodes.
• The touchkeys can be customized by the drawing on the panel. TSL compensates capacitance differences.
• Acquisition time and processing parameters can be optimized when electrodes have similar capacitance.
Sensor size example
Figure 8. Sensor size
5.5.1 Key
• Key sensors are used in common application
• You can get deeper key information in following documents:
Table 7. Key documentation gives a list of documents containing information about the key.
Table 7. Key documentation
Id Title Chapters
UM1913
Developing applications on STM32Cube with
STMTouch
®
touch sensing library
Touchkey sensor
AN4312
Guidelines for designing touch sensing applications
with surface sensors
Touchkey sensor
AN5105
Sensors
AN5105 - Rev 1
page 11/52
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