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STM8T143 Datasheet(PDF) 3 Page - STMicroelectronics

Part # STM8T143
Description  Single-channel capacitive sensor for touch and proximity detection
PDF  65 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8T143 Datasheet(HTML) 3 Page - STMicroelectronics

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DocID18315 Rev 6
3/65
STM8T143
Contents
4
7
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8
Design guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.1
Sensitivity adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.1.1
PCB layout and construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1
Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1.1
Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1.2
Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1.3
Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.1.4
Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.3
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.3.1
General operating conditions and supply characteristics . . . . . . . . . . . 38
9.3.2
Average current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.3.3
I/O pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
9.4
Regulator and reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.5
Capacitive sensing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.6
Streaming mode characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.7
EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.7.1
Functional EMS (electromagnetic susceptibility) . . . . . . . . . . . . . . . . . . 45
9.7.2
Prequalification trials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.7.3
Electromagnetic interference (EMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.7.4
Absolute maximum ratings (electrical sensitivity) . . . . . . . . . . . . . . . . . 46
9.7.5
Electrostatic discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.7.6
Static latchup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
10
Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10.1
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1.1
SO8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1.2
UFDFPN8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
10.2
Package thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
10.2.1
Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
11
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53



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