SX8661I07AULTRT Semtech, SX8661I07AULTRT Datasheet - Page 36

• Manufacturer Part Number: SX8661I07AULTRT
• Description: IC, Capacitive Button Touch And Proximity Controller, 8 SENSOR, MLPQ-28
• Manufacturer: Semtech

Specifications of SX8661I07AULTRT

• Controller Type: Capacitive Touch Screen
• Ic Interface Type: I2C
• Supply Voltage Range: 2.7V To 3.6V
• Operating Temperature Range: -40°C To +85°C

SX8661
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
LEDs in triple reporting mode proximity
Figure 39
Figure 39 shows an example of proximity detection and the reporting on LEDs. As soon as proximity is detected
all LEDs (2 LEDs are shown for simplicity) will fade in and stop at the proximity intensity level. In case proximity is
not detected anymore then the LEDs remain at the proximity intensity for a configurable time and then the fading
out will start.
LEDs in triple reporting mode proximity and touch
Figure 40
Figure 40 shows an example of proximity detection followed by a rapid touch on the sensor sd1.
The LEDs d1 and d2 will fade in as soon as proximity is detected (using the Inc_Prox parameter).
As soon as the finger touches the sensor sd1 the fading in of d1 will go to the ON intensity (using the touch
increment parameter).
The LED d2 remains at the proximity intensity level as sensors sd2 is not touched.
If the finger is removed rapidly the fading out of d1 will first use the touch decrement parameter to the proximity
intensity level. If the finger leaves the proximity region d1 and 2 will fade out simultaneously using the proximity
delay and decrement parameters.
Revision v3.2, January 2011
© 2011 Semtech Corp.
www.semtech.com
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