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SX8661Z Datasheet(PDF) 40 Page - Semtech Corporation

Part # SX8661Z
Description  Low Power, Capacitive Button Touch and Proximity Controller with LED Drivers and Analog Output
PDF  87 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661Z Datasheet(HTML) 40 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision v4.0, February 2016
© 2012 Semtech Corp.
www.semtech.com
40
SX8661Z
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
VANA, VDIG
The SX8661Z has on-chip regulators for internal use (pins VANA and VDIG).
VANA and VDIG have protection to VDD and to GND.
The output of the regulators needs to be de-coupled with a small 100nF capacitor to ground.
Figure 48 shows a simplified diagram of the VANA and VDIG pin.
Figure 48
Simplified diagram of VANA and VDIG
4.5
General purpose IO pins
The SX8661Z has 8 General purpose input/output (GPIO) pins.
All the GPIO pins have protection to VDD and GND.
The GPIO pins can be configured as GPO, SPO or GPP.
Figure 49 shows a simplified diagram of the GPIO pins.
SX8661Z
VDD
Rup
ctrl
Rdown
GPIO7...0
ctrl
GPO,
GPP,
SPO
VDD
GPOdata
PWM
ctrl
GPO,
GPP,
SPO
VDD
Figure 49
Simplified diagram of GPIO pins
VDD
SX8661Z
GND
VDIG
VDD
GND
VANA
VANA
VDIG
Cvdig
Cvana



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