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MPR121QR2 датащи(PDF) 27 Page - Freescale Semiconductor, Inc

номер детали MPR121QR2
подробное описание детали  Proximity Capactive touch Senosr controller
PDF  57 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPR121QR2 датащи(HTML) 27 Page - Freescale Semiconductor, Inc

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MPR121
Sensors
Freescale Semiconductor
27
NOISE HALF DELTA (NHD)
Figure 25. Noise Half Delta Register
NOISE COUNT LIMIT (NCL)
Figure 26. Noise Count Limit Register
7
6
543210
R0
0
NHD
W
Reset:
0
0
000000
= Unimplemented
Table 23. Noise Half Delta Register Field Descriptions
Field
Description
5:0
NHD
Noise Half Delta – The Noise Half Delta determines the incremental change when
non-noise drift is detected.
000000 DO NOT USE THIS CODE
000001 Encoding 1 – Sets the Noise Half Delta to 1
~
111111 Encoding 63 – Sets the Noise Half Delta to 63
7
6
543210
R
NCL
W
Reset:
0
0
000000
= Unimplemented
Table 24. Noise Count Limit Register Field Descriptions
Field
Description
7:0
NCL
Noise Count Limit – The Noise Count Limit determines the number of samples consecutively greater
than the Max Half Delta necessary before it can be determined that it is non-noise.
00000000 Encoding 0 – Sets the Noise Count Limit to 1 (every time over Max Half Delta)
00000001 Encoding 1 – Sets the Noise Count Limit to 2 consecutive samples over Max Half Delta
~
11111111 Encoding 255 – Sets the Noise Count Limit to 255 consecutive samples over Max Half Delta



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