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MPR121 数据表(PDF) 32 Page - Freescale Semiconductor, Inc

部件名 MPR121
功能描述  Proximity Capactive touch Senosr controller
PDF  57 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

MPR121 数据表(HTML) 32 Page - Freescale Semiconductor, Inc

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MPR121
Sensors
32
Freescale Semiconductor
Case 8
This case can also prevent keys from being stuck due to misuse. For example, if a metal pen touches a button, this may initially
engage the button but the pen is calibrated out over time and, normal function resumes. The same applies to water, food humid
environments and other instances that generate capacitance change.
A. Valid normal touch
B. False touch filtered out
C. Touch from new adjusted baseline
Figure 36.
Baseline
Data
A
C
B



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