The PCA8543 is a peripheral device which interfaces to almost any Liquid Crystal Display
(LCD) with low multiplex rates. It generates the drive signals for any static or multiplexed
LCD containing up to four backplanes, 60 segments, and up to 240 elements. The
PCA8543 is compatible with most microcontrollers and communicates via the two-line
bidirectional I²C-bus. Communication overheads are minimized using a display RAM with
auto-incremented addressing and display memory switching. The PCA8543 features an
internal charge pump with internal capacitors for on-chip generation of the LCD driving
voltages.
AEC-Q100 grade 2 compliant for automotive applications
Low power consumption
Extended operating temperature range from -40 °C to +105 °C
60 segments and 4 backplanes allowing to drive:
up to 30 7-segment alphanumeric characters
up to 15 14-segment alphanumeric characters
any graphics of up to 240 elements
Selectable backplane drive configuration: static, 2, or 4 backplane multiplexing
Programmable internal charge pump for on-chip LCD voltage generation up to
3 x VDD2
400 kHz I²C-bus interface
Selectable linear temperature compensation of VLCD
Selectable display bias configuration
Wide range for digital and analog power supply: from 2.5 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 (automobile) twisted nematic LCDs
On-chip RAM for display data storage arranged in two banks
Display memory bank switching
Programmable frame frequency in steps of 10 Hz in the range of 60 Hz to 300 Hz;
factory calibrated with a tolerance of ±15 % covering the whole temperature and
voltage range
Selectable inversion scheme for LCD driving waveforms: frame or line inversion
Integrated temperature sensor with temperature readout
On chip calibration of internal oscillator frequency and VLCD
AEC-Q100 grade 2 compliant for automotive applications
Low power consumption
Extended operating temperature range from -40 °C to +105 °C
60 segments and 4 backplanes allowing to drive:
up to 30 7-segment alphanumeric characters
up to 15 14-segment alphanumeric characters
any graphics of up to 240 elements
Selectable backplane drive configuration: static, 2, or 4 backplane multiplexing
Programmable internal charge pump for on-chip LCD voltage generation up to
3 x VDD2
400 kHz I²C-bus interface
Selectable linear temperature compensation of VLCD
Selectable display bias configuration
Wide range for digital and analog power supply: from 2.5 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 (automobile) twisted nematic LCDs
On-chip RAM for display data storage arranged in two banks
Display memory bank switching
Programmable frame frequency in steps of 10 Hz in the range of 60 Hz to 300 Hz;
factory calibrated with a tolerance of ±15 % covering the whole temperature and
voltage range
Selectable inversion scheme for LCD driving waveforms: frame or line inversion
Integrated temperature sensor with temperature readout
On chip calibration of internal oscillator frequency and VLCD
