sx8661 Semtech Corporation, sx8661 Datasheet - Page 38

• Manufacturer Part Number: sx8661
• Description: Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
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 43 shows a simplified diagram of the INTB pin.
Revision v3.2, January 2011
to host
R_INT
Figure 42
VDD
Figure 43
Low Power, Capacitive Button Touch and Proximity Controller
© 2011 Semtech Corp.
Simplified diagram of CN and CP
SX8661
Simplified diagram of INTB
CN
CP
SX8661
INTB
38
(8 sensors) with LED Drivers and Analog Output
VANA
VANA
INT
ASI
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SX8661