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SX8639 Datasheet(PDF) 5 Page - Semtech Corporation

Part # SX8639
Description  Low Power, Capacitive Button and Wheel Touch Controller
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8639 Datasheet(HTML) 5 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision 7_8, September 10
© 2010 Semtech Corp.
www.semtech.com
5
SX8639
Low Power, Capacitive Button and Wheel Touch Controller
(8 sensors) with Enhanced LED Drivers and Proximity Sensing
1.3
Pin Description
Number
Name
Type
Description
1
CAP1
Analog
Capacitive Sensor 1
2
CAP2
Analog
Capacitive Sensor 2
3
CAP3
Analog
Capacitive Sensor 3
4
CAP4
Analog
Capacitive Sensor 4
5
CAP5
Analog
Capacitive Sensor 5
6
CAP6
Analog
Capacitive Sensor 6
7
CAP7
Analog
Capacitive Sensor 7
8
CN
Analog
Integration Capacitor, negative terminal (1nF between CN and CP)
9
CP
Analog
Integration Capacitor, positive terminal (1nF between CN and CP)
10
VDD
Power
Main input power supply
11
INTB
Digital Output
Interrupt, active LOW, requires pull up resistor (on host or external)
12
SCL
Digital Input
I2C Clock, requires pull up resistor (on host or external)
13
SDA
Digital Input/Output
I2C Data, requires pull up resistor (on host or external)
14
GPIO0
Digital Input/Output
General Purpose Input/Output 0
15
GPIO1
Digital Input/Output
General Purpose Input/Output 1
16
GND
Ground
Ground
17
GPIO2
Digital Input/Output
General Purpose Input/Output 2
18
GPIO3
Digital Input/Output
General Purpose Input/Output 3
19
GPIO4
Digital Input/Output
General Purpose Input/Output 4
20
GPIO5
Digital Input/Output
General Purpose Input/Output 5
21
GND
Ground
Ground
22
GPIO6
Digital Input/Output
General Purpose Input/Output 6
23
GPIO7
Digital Input/Output
General Purpose Input/Output 7
24
VDIG
Analog
Digital Core Decoupling, connect to a 100nF decoupling capacitor
25
GND
Ground
Ground
26
RESETB
Digital Input
Active Low Reset. Connect to VDD if not used.
27
VANA
Analog
Analog Core Decoupling, connect to a 100nF decoupling capacitor
28
CAP0
Analog
Capacitive Sensor 0
bottom plate
GND
Ground
Exposed pad connect to ground
Table 1
Pin description


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