NXP Semiconductors Driver LCD PCx8537

I driver LCD PCx8537 di NXP sono driver per display a cristalli liquidi (LCD) appositamente progettati per gli LCD ad allineamento verticale (VA) ad alto contrasto con frequenza multiplex fino a 1:8. Generano i segnali drive per qualsiasi LCD statico o multiplex contenente fino a 8 piastre base, 46 segmenti e fino a 352 elementi. Il driver PCx8537 è dotato di pompa di carico interna con condensatori interni per la generazione su chip della tensione di azionamento dell'LCD. Per garantire un contrasto ottimale e stabile sull'intero campo di temperatura, il driver PCx8537 offre una compensazione programmabile della temperatura della tensione di alimentazione dell'LCD. Il PCx8537 può essere facilmente collegato a un microcontroller tramite il bus I2C a due fili (PCx8537AH) o un bus SPI bidirezionale a tre fili (PCx8537BH).

Caratteristiche

  • AEC Q100 compliant for automotive applications (PCA8537 versions only)
  • Low-power single-chip LCD controller and driver
  • 352 elements allowing to drive:
    • up to 44 7-segment alphanumeric characters
    • up to 22 14-segment alphanumeric characters
  • Selectable backplane drive configuration: static, 2, 4, 6, or 8 backplane multiplexing
  • Software programmable internal charge pump for on-chip LCD voltage generation up to 9V with internal capacitors
  • 400kHz I2C-bus interface (PCx8537AH)
  • 5MHz SPI-bus interface (PCx8537BH)
  • Programmable temperature compensation of VLCD in four regions
  • Selectable display bias configuration
  • Wide range for digital power supply: from 1.8V to 5.5V
  • Wide LCD supply range: from 2.5V for low threshold LCDs and up to 9.0V for high threshold twisted nematic LCDs
  • Display memory bank switching in static, duplex, and quadruplex drive modes
  • 352-bit RAM for display data storage
  • Programmable frame frequency in the range of 60Hz to 300Hz in steps of 10Hz; factory calibrated
  • Integrated temperature sensor with temperature readout
  • On chip calibration of internal oscillator frequency and VLCD
  • Manufactured in silicon gate CMOS process

Applicazioni

  • White goods
  • Handheld electronics
  • Battery operated equipment
  • Machine control systems
  • Measuring equipment
  • Information boards
  • Panels
  • Consumer
  • Industrial
  • Medical and health care

Datasheets