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SX8645 Datasheet(PDF) 5 Page - Semtech Corporation

Part # SX8645
Description  Ultra Low Power, Capacitive Button and Wheel Touch Controller (12 sensors) with Enhanced LED Drivers
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8645 Datasheet(HTML) 5 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision 7_5, February 10
© 2010 Semtech Corp.
www.semtech.com
5
SX8645
Ultra Low Power, Capacitive Button and Wheel
Touch Controller (12 sensors) with Enhanced LED Drivers
1.3
Pin Description
Number
Name
Type
Description
1
CAP2
Analog
Capacitive Sensor 2
2
CAP3
Analog
Capacitive Sensor 3
3
CAP4
Analog
Capacitive Sensor 4
4
CAP5
Analog
Capacitive Sensor 5
5
CAP6
Analog
Capacitive Sensor 6
6
CAP7
Analog
Capacitive Sensor 7
7
CAP8
Analog
Capacitive Sensor 8
8
CAP9
Analog
Capacitive Sensor 9
9
CAP10
Analog
Capacitive Sensor 10
10
CAP11
Analog
Capacitive Sensor 11
11
CN
Analog
Integration Capacitor, negative terminal (1nF between CN and CP)
12
CP
Analog
Integration Capacitor, positive terminal (1nF between CN and CP)
13
VDD
Power
Main input power supply
14
INTB
Digital Output
Interrupt, active LOW, requires pull up resistor (on host or external)
15
SCL
Digital Input
I2C Clock, requires pull up resistor (on host or external)
16
SDA
Digital Input/Output
I2C Data, requires pull up resistor (on host or external)
17
GPIO0
Digital Input/Output
General Purpose Input/Output 0
18
GPIO1
Digital Input/Output
General Purpose Input/Output 1
19
GND
Ground
Ground
20
GPIO2
Digital Input/Output
General Purpose Input/Output 2
21
GPIO3
Digital Input/Output
General Purpose Input/Output 3
22
GPIO4
Digital Input/Output
General Purpose Input/Output 4
23
GPIO5
Digital Input/Output
General Purpose Input/Output 5
24
GND
Ground
Ground
25
GPIO6
Digital Input/Output
General Purpose Input/Output 6
26
GPIO7
Digital Input/Output
General Purpose Input/Output 7
27
VDIG
Analog
Digital Core Decoupling, connect to a 100nF decoupling capacitor
28
GND
Ground
Ground
29
RESETB
Digital Input
Active Low Reset. Connect to VDD if not used.
30
VANA
Analog
Analog Core Decoupling, connect to a 100nF decoupling capacitor
31
CAP0
Analog
Capacitive Sensor 0
32
CAP1
Analog
Capacitive Sensor 1
bottom plate
GND
Ground
Exposed pad connect to ground
Table 1
Pin description


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