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SX8661Z Datasheet(PDF) 32 Page - Semtech Corporation

Part # SX8661Z
Description  Low Power, Capacitive Button Touch and Proximity Controller with LED Drivers and Analog Output
PDF  87 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661Z Datasheet(HTML) 32 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision v4.0, February 2016
© 2012 Semtech Corp.
www.semtech.com
32
SX8661Z
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
fading-in
OFF intensity
ON intensity
delay_off
fading-out
OFF intensity
ON
OFF
OFF
Figure 35
Single Fading Mode
ii) Continuous Fading Mode:
The GPO pin fades in and fades out continuously when the associated button is touched. The fading in and out
stops when the button is released. This is shown in Figure 36.
fading-in
OFF intensity
ON intensity
fading-out
OFF intensity
ON
OFF
Figure 36
Continuous Fading Mode
3.17.4 Intensity index vs PWM pulse width
Tables below are used to convert all intensity indexes parameters GpioIntensityOff, GpioIntensityOn and
GppIntensity but also to generate fading in GPO mode
During fading in(out), the index is automatically incremented(decremented) at every Inc(Dec)Time x
Inc(Dec)Factor until it reaches the programmed GpioIntensityOn(Off) value.
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
Index
Lin/Log
0
0/0
32
33/5
64
65/12
96
97/26
128
129/48
160
161/81
192
193/125
224
225/184
1
2/0
33
34/5
65
66/13
97
98/27
129
130/49
161
162/82
193
194/127
225
226/186
2
3/0
34
35/5
66
67/13
98
99/27
130
131/50
162
163/83
194
195/129
226
227/188
3
4/0
35
36/5
67
68/13
99
100/28
131
132/51
163
164/84
195
196/130
227
228/190
4
5/0
36
37/5
68
69/14
100
101/29
132
133/52
164
165/86
196
197/132
228
229/192
5
6/2
37
38/6
69
70/14
101
102/29
133
134/53
165
166/87
197
198/133
229
230/194
6
7/2
38
39/6
70
71/14
102
103/30
134
135/54
166
167/88
198
199/135
230
231/197
7
8/2
39
40/6
71
72/15
103
104/30
135
136/55
167
168/89
199
200/137
231
232/199
8
9/2
40
41/6
72
73/15
104
105/31
136
137/55
168
169/91
200
201/139
232
233/201



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