sx8645 Semtech Corporation, sx8645 Datasheet - Page 5

• Manufacturer Part Number: sx8645
• Description: Ultra Low Power, Capacitive Button And Wheel Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

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