SX8661I07AULTRT Semtech, SX8661I07AULTRT Datasheet - Page 83
SX8661I07AULTRT
Manufacturer Part Number
SX8661I07AULTRT
Description
IC, Capacitive Button Touch And Proximity Controller, 8 SENSOR, MLPQ-28
Manufacturer
Semtech
Datasheet
1.SX8661I07AULTRT.pdf
(88 pages)
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
- Current page: 83 of 88
- Download datasheet (2Mb)
1. No finger
=> No proximity detected
=> All LEDs OFF
ADVANCED COMMUNICATIONS & SENSING
7.3 Example of Touch+Proximity Module
7.3.1
To demonstrate the proximity sensing feature of the SX8661/SX863x family, a module has been designed and is
illustrated in figure below.
The touch button controller is running in stand-alone (i.e. without host) and uses the Autolight mode to turn LEDs
ON/OFF accordingly to the touch buttons and proximity sensing status.
7.3.2
Module operation can be seen as 5 steps which are described in figure below
Notes:
- For better user experience, bicolor LEDs have been used here but one could decide to design a module with
normal unicolor LEDs. In this case, step 3 above would simply consist in a higher (blue) intensity for the LED of
the button touched.
- For obvious demonstration purposes the overlay used here is transparent but in typical applications (TV,
Monitor, Set-top box, etc) the overlay would be opaque enough so that when LEDs are OFF (i.e. no proximity
detected) the PCB is not visible to the user.
Revision v3.2, January 2011
Overview
Operation
2. Finger approaches
=> Proximity detected
=> Blue LEDs turned ON
Figure 66
Figure 65
Low Power, Capacitive Button Touch and Proximity Controller
Touch+Proximity Module Operation
Touch+Proximity Module Overview
© 2011 Semtech Corp.
3. Button touch
=> Orange LED turned ON
(blue+orange = pink)
83
(8 sensors) with LED Drivers and Analog Output
4. Button release
=> Orange LED turned
OFF
www.semtech.com
5. Finger removed
=> No proximity detected
=> Blue LEDs turned OFF
DATASHEET
SX8661
Related parts for SX8661I07AULTRT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
EVALUATION BOARD
Manufacturer:
Semtech
Datasheet:
Part Number:
Description:
EVALUATION BOARD
Manufacturer:
Semtech
Datasheet:
Part Number:
Description:
VOLTAGE SUPPRESSOR, TRANSIENT SEMTECH
Manufacturer:
Semtech
Datasheet:
Part Number:
Description:
HIGH VOLTAGE CAPACITORS MONOLITHIC CERAMIC TYPE
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
EZ1084CM5.0 AMP POSITIVE VOLTAGE REGULATOR
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
RailClamp Low Capacitance TVS Diode Array
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Semtech Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Semtech Corporation
Datasheet: