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MPR121 데이터시트(PDF) 25 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) 25 Page - Freescale Semiconductor, Inc

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MPR121
Sensors
Freescale Semiconductor
25
Figure 23. Average Supply Current
The output data is the Filtered Data High and Low is the data coming out of the second stage filter. This means that the
response time of the output is the SFI times the ESI. This usually results in 16 ms and 4 iterations being used to get 64 ms
response time while still optimizing the power consumption. At each 64 ms, a decision would be made regarding touch by com-
paring the Baseline with the filtered data output, resulting in a a worst case of the full 64 ms plus half the previous cycle, equalling
96 ms.
SAMPLE RATE (ms)
1
10
29
μA
17
μA
100
400
300
200
2
4
8
16
32
64
128
102
μA
54
μA
393
μA
199
μA
11
μA
8
μA



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