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STM8T143AU62TTR Datasheet(PDF) 6 Page - STMicroelectronics

Part # STM8T143AU62TTR
Description  Single-channel capacitive sensor for touch and proximity detection
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8T143AU62TTR Datasheet(HTML) 6 Page - STMicroelectronics

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STM8T143
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List of figures
Figure 1.
STM8T143 block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2.
SO8 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3.
UFDFPN8 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4.
Coupling with hand increases the capacitance of the sensing electrode . . . . . . . . . . . . . . 11
Figure 5.
STM8T143 measuring circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6.
Signal monitored on CX pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 7.
Automatic electrode tuning (AET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8.
Signal reference and detection threshold (not detailed) . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9.
DYCAL general operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10.
DYCAL operation with water residue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11.
No DYCAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 12.
IIR filter formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 13.
ECS halt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 14.
Unwanted detection managed by the reference freeze timeout . . . . . . . . . . . . . . . . . . . . . 23
Figure 15.
ECS filter K constant management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 16.
Data streaming frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 17.
Typical application schematic for Control mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 18.
Typical application schematic for Dual output mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 19.
Typical application schematic for Data streaming mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 20.
Pin loading conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 21.
Data streaming timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 22.
SO8-lead plastic small outline - package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 23.
SO8 narrow recommended footprint (dimensions in mm) . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 24.
UFDFPN8-lead ultra thin fine pitch dual flat package (MLP) package outline . . . . . . . . . . 50
Figure 25.
UFDFPN 2 x 3 mm recommended footprint (dimensions in mm) . . . . . . . . . . . . . . . . . . . . 51
Figure 26.
STM8T143 ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 27.
SO8 package marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 28.
UFDFPN8 package marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 29.
STM8T143 programming tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59


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