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STM8T141 数据表(PDF) 6 Page - STMicroelectronics

部件名 STM8T141
功能描述  Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode
PDF  50 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM8T141 数据表(HTML) 6 Page - STMicroelectronics

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List of figures
STM8T141
6/50
Doc ID 15699 Rev 7
List of figures
Figure 1.
STM8T141 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2.
S08 pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3.
UFDFPN8 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4.
Coupling with hand increases the capacitance of the sensing electrode . . . . . . . . . . . . . . 10
Figure 5.
STM8T measuring circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6.
Conversion period examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7.
Environmental compensation filter (ECF) example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8.
Environmental compensation filter (ECF) example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 9.
Reference freeze timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 10.
Typical application shematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11.
Possible load configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 12.
Active mode output operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 13.
Toggle mode output operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14.
3-second latch mode output operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 15.
30-second latch mode output operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 16.
Charge cycle timing diagram in Normal Power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 17.
Charge cycle timing diagram in Low Power mode with Zoom . . . . . . . . . . . . . . . . . . . . . . 24
Figure 18.
Charge cycle timing diagram in Extreme Low Power mode with Zoom . . . . . . . . . . . . . . . 24
Figure 19.
Charge cycle timing diagram in Extreme Low Power mode . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 20.
Connecting the shield (coaxial cable implementation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 21.
Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 22.
IDD average current consumption vs RSHIELD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 23.
Sigma variation across VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 24.
SO8-lead plastic small outline - package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 25.
UFDFPN8-lead ultra thin fine pitch dual flat package (MLP) package outline . . . . . . . . . . 40
Figure 26.
STM8T141 ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 27.
STM8T141-EVAL evaluation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 28.
STM8T141 blank module box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 29.
STM8T141-EVAL programming tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47



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