The PCF8537AH/1,518 is a fully featured Liquid Crystal Display (LCD) driver, specifically designedfor high-contrast Vertical Alignment (VA) LCD with multiplex rates up to 1:8. It generatesthe drive signals for any static or multiplexed LCD containing up to eight backplanes,46 segments, and up to 352 elements. The PCF8537AH/1,518 features an internal charge pumpwith internal capacitors for on-chip generation of the LCD driving voltage. To ensure anoptimal and stable contrast over the full temperature range, the PCF8537AH/1,518 offers aprogrammable temperature compensation of the LCD supply voltage. The PCF8537AH/1,518 canbe easily connected to a microcontroller by either the two-line I²C-bus (PCF8537AH) or athree-line bidirectional SPI-bus (PCF8537BH).
Feature
- 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 upto 9 V with internal capacitors
- 400 kHz I²C-bus interface (PCF8537AH)
- 5 MHz SPI-bus interface (PCF8537BH)
- Programmable temperature compensation of VLCD in four 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 highthreshold 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 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
- White goods
- Handheld electronics
- Battery operated equipment
- Machine control systems
- Measuring equipment
- Information boards
- Panels
- Consumer
- Industrial
- Medical and health care
