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Semtech SX8644

Semtech SX8644

Ultra Low Power, Capacitive Button and Slider Touch Controller (12 sensors) with Enhanced LED Drivers

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Not Recommended for New Designs. Datasheet is for information purposes only.

Features


  • Complete 12 Sensors Capacitive Touch Controller for
    • Buttons and Slider
      • Pre-configured for 6 Buttons and a Slider
      • 8 LED Drivers with Individual Intensity, Fading Control and Autolight Mode
      • 256 steps PWM Linear and Logarithmic control
  • High Resolution Capacitive Sensing
    • Up to 100pF of Offset Capacitance Compensation at Full Sensitivity
    • Capable of Sensing through Overlay Materials up to 5mm thick
  • Extremely Low Power Optimized for Portable Application
    • 8uA (typ) in Sleep Mode
    • 80uA (typ) in Doze Mode (Scanning Period 195ms)
    • 220uA (typ) in Active Mode (Scanning Period 30ms)
  • Programmable Scanning Period from 15ms to 1500ms
  • 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
  • "Smart" Wake-up Sequence for Easy Activation from Doze
  • No External Components per Sensor Input
  • Internal Clock Requires No External Components
  • Differential Sensor Sampling for Reduced EMI
  • 400 KHz Fast-Mode I²C Interface with Interrupt
  • AEC-Q100 Qualified Part
  • -40°C to +85°C Operation
I²C logo is a trademark of NXP B.V.

Applications


  • Notebook/Netbook/Portable/Handheld computers
  • Cell phones, PDAs
  • Consumer Products, Instrumentation, Automotive
  • Mechanical Button Replacement

Packaging

  • MLPQ-W32

Order Codes

  • SX8644I05AWLTR- 3000 units/reel - Lead free, RoHS/WEEE compliant and Halogen Free
  • SX8644EVK: Evaluation Kit
 
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