sx8661 Semtech Corporation, sx8661 Datasheet - Page 42

• 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
VANA, VDIG
The SX8661 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 50 shows a simplified diagram of the VANA and VDIG pin.
4.5 General purpose IO pins
The SX8661 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 51 shows a simplified diagram of the GPIO pins.
Revision v3.2, January 2011
Figure 50
Cvana
Cvdig
Figure 51
GND
GND
Low Power, Capacitive Button Touch and Proximity Controller
Simplified diagram of VANA and VDIG
© 2011 Semtech Corp.
VANA
Simplified diagram of GPIO pins
VDIG
SX8661
42
(8 sensors) with LED Drivers and Analog Output
VDD
VDD
VDIG
VANA
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SX8661