sx8638 Semtech Corporation, sx8638 Datasheet - Page 42

• Manufacturer Part Number: sx8638
• Description: Low Power, Capacitive Button And Slider Touch Controller 8 Sensors With Enhanced Led Drivers And Proximity
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
5.3 Capacitive Sensors Parameters
Revision 7_6, September 10
Capacitive Sensors Parameters
Address
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
Name
CapModeMisc
Reserved
CapMode7_4
CapMode3_0
CapSensitivity0_1
CapSensitivity2_3
CapSensitivity4_5
CapSensitivity6_7
Reserved
Reserved
CapThresh0
CapThresh1
CapThresh2
CapThresh3
CapThresh4
CapThresh5
CapThresh6
CapThresh7
Reserved
Reserved
Reserved
Reserved
Bits
7:3
2:0
7:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:4
3:0
7:4
3:0
7:4
3:0
7:4
3:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
Description
Reserved
IndividualSensitivity
Reserved
CAP7 Mode
CAP6 Mode
CAP5 Mode
CAP4 Mode
CAP3 Mode
CAP2 Mode
CAP1 Mode
CAP0 Mode
CAP0 Sensitivity - Common Sensitivity
CAP1 Sensitivity
CAP2 Sensitivity
CAP3 Sensitivity
CAP4 Sensitivity
CAP5 Sensitivity
CAP6 Sensitivity
CAP7 Sensitivity
Reserved
Reserved
CAP0 Touch Threshold
CAP1 Touch Threshold
CAP2 Touch Threshold
CAP3 Touch Threshold
CAP4 Touch Threshold
CAP5 Touch Threshold
CAP6 Touch Threshold
CAP7 Touch Threshold
Reserved
Reserved
Reserved
Reserved
© 2010 Semtech Corp.
Low Power, Capacitive Button and Slider Touch Controller
(8 sensors) with Enhanced LED Drivers and Proximity
42
Defines common sensitivity for all sensors or individual
sensor sensitivity.
001: Common settings (CapSensitivity0_1[7:4])
100: Individual CAP sensitivity settings (CapSensitivityx_x)
Else : Reserved
Defines the mode of
the CAP pin.
00: Disabled
01: Button
10: Slider
11: Reserved
Defines the sensitivity.
0x0: Minimum (default)
0x7: Maximum
0x8…0xF: Reserved
Defines the Touch Threshold ticks.
0x00: 0,
0x01: 4,
…
0xA0: 640 (default),
…
0xFF: 1020
DATASHEET
www.semtech.com
Default
SX8638
Slider
Slider
Slider
Slider
Slider
Slider
Button
Button