The PCA8547AHT/AY is a fully featured Liquid Crystal Display (LCD) driver, specifically designedfor high-contrast Vertical Alignment (VA) LCD with multiplex rates up to 1:4. It generatesthe drive signals for any static or multiplexed LCD containing up to four backplanes,44 segments, and up to 176 elements. The PCA8547AHT/AY 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 PCA8547AHT/AY offers aprogrammable temperature compensation of the LCD supply voltage. The PCA8547AHT/AY canbe easily connected to a microcontroller by either the two-line I²C-bus (PCA8547A) or athree-line bidirectional SPI-bus (PCA8547B).
Feature
- 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 upto 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 positiveslopes 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 highthreshold 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
- Instrument cluster
- Car radio
- Climate control units
