Capacitive Touch Controllers
  • SX8663
    • Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output
  • SX8661
    • Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output
  • SX8660
    • Ultra Low Power, Capacitive Button Touch Controller (8 sensors) with Enhanced LED Drivers and Analog
  • SX8649
    • Ultra Low Power, Capacitive Button and Wheel Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8648
    • Ultra Low Power, Capacitive Button and Slider Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8647
    • Ultra Low Power, Capacitive Wheel Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8646
    • Ultra Low Power, Capacitive Button Touch Controller (8 sensors) with Enhanced LED Drivers
  • SX8645
    • Ultra Low Power, Capacitive Button and Wheel Touch Controller (12 sensors) with Enhanced LED Drivers
Semtech SX8662

Semtech SX8662

Capacitive Button Matrix (up to 36) Controller with Individual LED Drivers and Buzzer Output

The SX8662 is an ultra low power, fully integrated 12-channel solution for capacitive touch-button matrix applications (up to 36 keys). Unlike many capacitive touch solutions, the SX8662 features dedicated capacitive sense inputs (that requires no external components) in addition to 8 general purpose I/O ports (GPIO) which can be used to drive up to 36 matrix LEDs (i.e. one per key). Each of the on-chip GPIO/LED driver is equipped with independent PWM source for enhanced visual effect such as dimming, and breathing.

Features


  • Complete Capacitive Touch-Button Solution
    • Up to 36 Matrix Buttons
    • Up to 36 LEDs Control for individual Visual Feedback with Auto Lightening
    • Configurable Single or Continuous Fading Mode
    • 256 steps PWM Linear and Logarithmic control
  • High Resolution Capacitive Sensing
    • Up to 100pF of Offset Cap. Compensation at Full Sensitivity
    • Capable of Sensing up thru 5mm thick Overlay Materials
  • Support of buzzer for audible feedback
  • User-selectable Button Reporting Configuration
  • Extremely Low Power
    • 8uA (typ) in Sleep Mode
    • 100uA (typ) in Doze Mode (195ms)
    • 460uA (typ) in Active Mode (30ms)
  • Programmable Scanning Period from 15ms to several seconds
  • Auto Offset Compensation
    • Eliminates false triggers due to environmental factors (temperature, humidity)
    • Initiated on power-up and configurable intervals
  • Multi-Time In-Field Programmable Firmware Parameters for Ultimate Flexibility
    • On-chip user programmable memory for fast, self contained start-up
  • No External Components per Sensor Input
  • Internal Clock Requires No External Components
  • Differential Sensor Sampling for Reduced EMI
  • Optional 400 KHz I²C Interface with Programmable Address
  • -40°C to +85°C Operation

Applications


  • Home Automation
  • White Goods
  • Printers
  • Notebook/Netbook/Portable/Handheld computers
  • Consumer Products, Instrumentation, Automotive
  • Mechanical Button Replacement

Packaging

  • MLPQ-W32

Order Codes

  • SX8662I08AWLTRT - Lead Free, RoHS/WEEE compliant and Halogen Free