SX8644I05AWLTRT Semtech, SX8644I05AWLTRT Datasheet - Page 37
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SX8644I05AWLTRT
Manufacturer Part Number
SX8644I05AWLTRT
Description
12-ch Capacitive Touch Solution (Button & Slider)
Manufacturer
Semtech
Datasheets
1.SX8644.pdf
(76 pages)
2.SX8644I05AWLTRT.pdf
(76 pages)
3.SX8644I05AWLTRT.pdf
(76 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SX8644I05AWLTRT
Manufacturer:
SEMTECHCORPORATION
Quantity:
20 000
ADVANCED COMMUNICATIONS & SENSING
VANA, VDIG
The SX8644 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 44 shows a simplified diagram of the VANA and VDIG pin.
4.5 General purpose IO pins
The SX8644 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 GPI, GPO or GPP.
Figure 45 shows a simplified diagram of the GPIO pins.
Revision 7_3, January 10
Figure 44
Cvana
Cvdig
Figure 45
GND
GND
Simplified diagram of VANA and VDIG
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2009 Semtech Corp.
VANA
VDIG
Simplified diagram of GPIO pins
SX8644
37
Ultra Low Power, Capacitive Button and Slider
VDD
VDD
VDIG
VANA
DATASHEET
www.semtech.com
SX8644