SX8660I06AULTRT datasheet(10/75 Pages) SEMTECH

Part #	SX8660I06AULTRT

Description	Ultra Low Power, Capacitive Button Touch Controller (8 sensors) with Enhanced LED Drivers and Analog Output

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Manufacturer	SEMTECH [Semtech Corporation]

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v2.3, June 2010

www.semtech.com

10

SX8660

Ultra Low Power, Capacitive Button Touch Controller

(8 sensors) with Enhanced LED Drivers and Analog Output

3

FUNCTIONAL DESCRIPTION

3.1

Quickstart Application

The SX8660 is preconfigured (Quickstart Application) for an application with eight buttons, one Analog Output

Interface, one Buzzer output and five LED drivers using various modes of PWM fading. The different fading

modes are discussed in later chapters. Table 7 summarises the default configuration of the eight GPIOs available

on the SX8660 Quickstart application.

GPIO

Function

Fading Mode

Comments

0

LED

Single Fading Mode

Autolight, mapped on Btn0

1

LED

Single Fading Mode

Autolight, mapped on Btn1

2

LED

Continuous Fading Mode

Autolight, mapped on Btn2

3

LED

Continuous Fading Mode

Autolight, mapped on Btn3

4

LED

Repeat Fading Mode

Autolight, mapped on Btn4

5

BUZZER

Not applicable

Buzzer output, 30ms buzzing period, 4KHz for approx. 15ms, 8KHz for

approx. 15ms.

6

LED

Repeat Fading Mode

Autolight, mapped on Btn6

7

AOI-A

Not applicable

Analog Output Interface A (VDD=3.3V)

Btn0: 0.3V

Btn1: 0.6V

Btn2: 0.9V

Btn3: 1.2V

Btn4: 1.5V

Btn5: 1.8V

Btn6: 2.1V

Btn7: 2.4V

Table 7 Quickstart Application GPIO configuration

Implementing a schematic based on Figure 6 will be immediately operational after powering without programming

the SX8660 (even without host).

The default sensitivity is set to 0x03 for all sensors (assumed sensor area approximately 1 cm

2 covered by 2mm

thick acrylic overlay material).

Figure 6

Quickstart Application

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SX8660I06AULTRT Datasheet(PDF) 10 Page - Semtech Corporation

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