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STM8T141 Datasheet(PDF) 34 Page - STMicroelectronics

Part # STM8T141
Description  Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8T141 Datasheet(HTML) 34 Page - STMicroelectronics

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Electrical characteristics
STM8T141
34/50
Doc ID 15699 Rev 7
Figure 23.
Sigma variation across VDD
Table 17.
Response times (1)
1.
Values guaranteed by design.
Mode
tSAMPLING = 10 ms
tSAMPLING = 20 ms
Unit
Min.
Max.
Min.
Max.
Normal Power mode
30
50
60
100
ms
Low Power with Zoom mode
30
100
60
200
Extreme Low Power with Zoom mode
30
250
60
500
Extreme Low Power mode
510
850
1020
1700
Table 18.
External sensing component characteristics
Symbol
Parameter
Min.
Typ.
Max.
Unit
CS
Sampling capacitor (COG or NPO type)(1)
1. For more information about capacitors, please refer to Application note: AN2966.
47
214 x CX
nF
CX
Equivalent electrode capacitance
100
pF
CT
Equivalent touch capacitance
5
RX
Electrode serial resistance
2
22
kOhm
RSHIELD Shield pull-up resistance
1
1000



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