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STM8T141 bảng dữ liệu(PDF) 17 Page - STMicroelectronics

tên linh kiện STM8T141
Giải thích chi tiết về linh kiện  Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode
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STM8T141
Typical application diagram
Doc ID 15699 Rev 7
17/50
6
Typical application diagram
Figure 10.
Typical application shematic
1.
If the active shield is not used, The SHLDIN pin must be grounded, SHLDOUT should be left unconnected, and
RSHIELD
can be removed.
2.
Use COG or NPO or higher grade capacitor.
The smaller the value of the RSHIELD resistor, the better its effect but, the greater the device
consumption.
Pin TOUT/POUT can directly drive a HV FET (as shown in Figure 11) that, in turn, can drive
any load.
Figure 11.
Possible load configurations
A touch or proximity detection is defined as an actuation (high = logical '1' and
low = logical '0').
GND
A
LED
LED as Load
B
C
3
D
1G
2
S
R
Relay on Load
terminals to
Switch any High
Voltage Load
Low Voltage DC
Light Bulb as Load
K1
TOUT/POUT
Load
voltage
Load POS
Load NEG
Load POS
Load NEG
Load NEG
Load POS
Load POS
Load NEG
ai15523



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