SX8645I05AWLTRT Semtech, SX8645I05AWLTRT Datasheet - Page 30

• Manufacturer Part Number: SX8645I05AWLTRT
• Description: 12-ch Capacitive Touch Solution (Button & Wheel)
• Manufacturer: Semtech

ADVANCED COMMUNICATIONS & SENSING
3.16.5 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.
Recommended/default settings are inverted polarity (to take advantage from high sink current capability) and
logarithmic mode (due to the non-linear response of the human eye).
Revision 7_5, February 10
Index
Index
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
Lin/Log
Lin/Log
256/256
255/256
254/256
253/256
252/256
251/254
250/254
249/254
248/254
247/254
246/254
245/254
244/254
243/254
242/253
241/253
240/253
239/253
238/253
237/253
236/253
235/253
234/253
233/252
232/252
231/252
230/252
229/252
228/252
227/252
226/252
225/251
10/2
11/2
12/2
13/2
14/2
15/3
16/3
17/3
18/3
19/3
20/3
21/3
22/3
23/3
24/4
25/4
26/4
27/4
28/4
29/4
30/4
31/4
32/5
0/0
2/0
3/0
4/0
5/0
6/2
7/2
8/2
9/2
Index
Index
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Lin/Log
Lin/Log
224/251
223/251
222/251
221/251
220/251
219/250
218/250
217/250
216/250
215/250
214/249
213/249
212/249
211/249
210/249
209/248
208/248
207/248
206/248
205/247
204/247
203/247
202/247
201/246
200/246
199/246
198/246
197/245
196/245
195/245
194/244
193/244
56/10
57/10
58/10
59/10
60/11
61/11
62/11
63/12
64/12
Table 11
Table 10 Intensity index vs. PWM pulse width (normal polarity)
33/5
34/5
35/5
36/5
37/5
38/6
39/6
40/6
41/6
42/6
43/7
44/7
45/7
46/7
47/7
48/8
49/8
50/8
51/8
52/9
53/9
54/9
55/9
Index
Index
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
Intensity index vs. PWM pulse width (inverted polarity)
Lin/Log
Lin/Log
192/244
191/243
190/243
189/243
188/242
187/242
186/242
185/241
184/241
183/241
182/240
181/240
180/240
179/239
178/239
177/238
176/238
175/237
174/237
173/236
172/236
171/235
170/235
169/234
168/234
167/233
166/233
165/232
164/232
163/231
162/231
161/230
65/12
66/13
67/13
68/13
69/14
70/14
71/14
72/15
73/15
74/15
75/16
76/16
77/16
78/17
79/17
80/18
81/18
82/19
83/19
84/20
85/20
86/21
87/21
88/22
89/22
90/23
91/23
92/24
93/24
94/25
95/25
96/26
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2010 Semtech Corp.
Index
Index
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
96
97
98
99
96
97
98
99
Lin/Log
Lin/Log
160/230
159/229
158/229
157/228
156/227
155/227
154/226
153/226
152/225
151/224
150/224
149/223
148/223
147/222
146/221
145/221
144/220
143/219
142/218
141/218
140/217
139/216
138/216
137/215
136/214
135/213
134/212
133/212
132/211
131/210
130/209
129/208
100/28
101/29
102/29
103/30
104/30
105/31
106/32
107/32
108/33
109/33
110/34
111/35
112/35
113/36
114/37
115/38
116/38
117/39
118/40
119/40
120/41
121/42
122/43
123/44
124/44
125/45
126/46
127/47
128/48
97/26
98/27
99/27
30
Ultra Low Power, Capacitive Button and Wheel
Index
Index
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
Lin/Log
Lin/Log
128/208
127/207
126/206
125/205
124/204
123/203
122/202
121/201
120/201
119/200
118/199
117/198
116/197
115/196
114/195
113/194
112/193
111/192
110/191
109/190
108/189
107/188
106/187
105/185
104/184
103/183
102/182
101/181
100/180
129/48
130/49
131/50
132/51
133/52
134/53
135/54
136/55
137/55
138/56
139/57
140/58
141/59
142/60
143/61
144/62
145/63
146/64
147/65
148/66
149/67
150/68
151/69
152/71
153/72
154/73
155/74
156/75
157/76
158/77
159/78
160/80
99/179
98/178
97/176
Index
Index
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
Lin/Log
176/100
177/101
178/103
179/104
180/106
181/107
182/109
183/110
184/111
185/113
186/114
187/116
188/117
189/119
190/121
191/122
192/124
Lin/Log
161/81
162/82
163/83
164/84
165/86
166/87
167/88
168/89
169/91
170/92
171/93
172/95
173/96
174/97
175/99
96/175
95/174
94/173
93/172
92/170
91/169
90/168
89/167
88/165
87/164
86/163
85/161
84/160
83/159
82/157
81/156
80/155
79/153
78/152
77/150
76/149
75/147
74/146
73/145
72/143
71/142
70/140
69/139
68/137
67/135
66/134
65/132
Index
Index
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
DATASHEET
www.semtech.com
Lin/Log
193/125
194/127
195/129
196/130
197/132
198/133
199/135
200/137
201/139
202/140
203/142
204/144
205/146
206/147
207/149
208/151
209/153
210/155
211/156
212/158
213/160
214/162
215/164
216/166
217/168
218/170
219/172
220/174
221/176
222/178
223/180
224/182
Lin/Log
64/131
63/129
62/127
61/126
60/124
59/123
58/121
57/119
56/117
55/116
54/114
53/112
52/110
51/109
50/107
49/105
48/103
47/101
46/100
45/98
44/96
43/94
42/92
41/90
40/88
39/86
38/84
37/82
36/80
35/78
34/76
33/74
SX8645
Index
Index
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
Lin/Log
225/184
226/186
227/188
228/190
229/192
230/194
231/197
232/199
233/201
234/203
235/205
236/208
237/210
238/212
239/215
240/217
241/219
242/221
243/224
244/226
245/229
246/231
247/233
248/236
249/238
250/241
251/243
252/246
253/248
254/251
255/253
256/256
Lin/Log
32/72
31/70
30/68
29/66
28/64
27/62
26/59
25/57
24/55
23/53
22/50
21/48
20/46
19/44
18/41
17/39
16/37
15/35
14/32
13/30
12/27
11/25
10/23
9/20
8/18
7/15
6/13
5/10
4/8
3/5
2/3
0/0