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SX8663 Datasheet(PDF) 31 Page - Semtech Corporation

Part # SX8663
Description  Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output
PDF  64 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8663 Datasheet(HTML) 31 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
Rev5 4
th August 2011
© 2011 Semtech Corp.
www.semtech.com
31
SX8663
Capacitive Button Matrix (up to 36) and Proximity Controller
with Individual LED Drivers and Buzzer Output
Figure 35
Simplified diagram of CN and CP
4.3
Host interface pins
The host interface consists of the interrupt pin INTB, a reset pin RESETB and the standard I2C pins: SCL and
SDA.
INTB
The INTB pin is an open drain output that requires an external pull-up resistor (1..10 kOhm). The INTB pin is
protected to VDD using dedicated devices. The INTB pin has diode protected to GROUND.
Figure 36 shows a simplified diagram of the INTB pin.
Figure 36
Simplified diagram of INTB
SX8663
ASI
CP
VANA
CN
VANA
VDD
R_INT
INTB
SX8663
INT
to host



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