4 X 44 Automotive LCD Driver with Integrated Charge Pump


Product Details


  • AEC-Q100 compliant for automotive applications
  • Low-power single-chip LCD controller and driver
  • 176 elements allowing to drive:
    • up to 22 7-segment alphanumeric characters
    • up to 11 14-segment alphanumeric characters
  • Selectable backplane drive configuration: static, 2, or 4 backplane multiplexing
  • Software programmable internal charge pump for on-chip LCD voltage generation up to 9 V with internal capacitors
  • 400 kHz I²C-bus interface (PCA8547A)
  • 5 MHz SPI-bus interface (PCA8547B)
  • Programmable temperature compensation of VLCD with both, negative and positive slopes in four temperature regions
  • Selectable display bias configuration
  • Wide range for digital power supply: from 1.8 V to 5.5 V
  • Wide LCD supply range: from 2.5 V for low threshold LCDs and up to 9.0 V for high threshold twisted nematic LCDs
  • On-chip RAM for display data storage arranged in two banks
  • Display memory bank switching
  • Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz; factory calibrated
  • Integrated temperature sensor with temperature readout
  • On chip calibration of internal oscillator frequency and VLCD
  • Manufactured in silicon gate CMOS process
  • Two RAM banks provided

Target Applications

  • Instrument cluster
  • Car radio
  • Climate control units

Part numbers include: PCA8547AHT.


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