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MPR121 데이터시트(PDF) 17 Page - Freescale Semiconductor, Inc

부품명 MPR121
상세설명  Proximity Capactive touch Senosr controller
PDF  57 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPR121 데이터시트(HTML) 17 Page - Freescale Semiconductor, Inc

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MPR121
Sensors
Freescale Semiconductor
17
AUTO-CONFIG USL REGISTER
Figure 12. AUTO-CONFIG USL Register
As this register represents the upper limit for the auto-configuration the value can be calculated by:
Equation 8
For the 1.8 V system, this value is 156 or 0x9C.
AUTO-CONFIG TARGET LEVEL REGISTER
Figure 13. AUTO-CONFIG Target Level Register
7
6
543210
R
USL
W
Reset:
0
0
000000
= Unimplemented
Table 14. AUTO-CONFIG USL Register Field Descriptions
Field
Description
7:0
USL
Upper Limit – The Upper Limit for the auto-configuration baseline search is set to
this value.
00000000 – Upper Limit set to 0
00000001 – Upper Limit set to 1
~
11111111 – Upper Limit set to 255
7
6
543210
R
T_L
W
Reset:
0
0
000000
= Unimplemented
VSL
V
DD
0.7
–
V
DD
-------------------------- 256
⋅
=



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