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General description

The PCA8530 is a fully featured Chip-On-Glass (COG)1 Liquid Crystal Display (LCD)

driver, designed for high-contrast Vertical Alignment (VA) LCD with multiplex rates up to

1:4. It generates the drive signals for a static or multiplexed LCD containing up to

4 backplane, 102 segment outputs, and up to 408 segments/elements. The PCA8530

features an internal charge pump with internal capacitors for on-chip generation of the

LCD driving voltage. To ensure an optimal and stable contrast over the full temperature

range, the PCA8530 offers a programmable temperature compensation of the LCD supply

voltage. The PCA8530 can be easily controlled by a microcontroller through either the

two-line I2C-bus or a four-line bidirectional SPI-bus.

For a selection of NXP LCD segment drivers, see Table 58 on page 93.

Features and benefits

? AEC Q100 grade 2 compliant for automotive applications

? Low power consumption

? Extended operating temperature range from ?40 ?C to +105 ?C

? 102 segments and 4 backplanes allowing to drive:

? up to 51 7-segment numeric characters

? up to 25 14-segment alphanumeric characters

? any graphics of up to 408 segments/elements

? 408-bit RAM for display data storage

? Two sets of backplane outputs providing higher flexibility for optimal COG layout

configurations

? Up to 4 chips can be cascaded to drive larger displays with an internally generated or

externally supplied VLCD

? Selectable backplane drive configuration: static, 2, or 4 backplane multiplexing

? LCD supply voltage

? Programmable internal charge pump for on-chip LCD voltage generation up to

5 ? VDD2

? External LCD voltage supply possible as well

? Selectable 400 kHz I2C-bus or 3 MHz SPI-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 voltage range from 4.0 V for low threshold LCDs up to 12.0 V for high

threshold twisted nematic and Vertical Alignment (VA) displays

? Display memory bank switching in static and 1:2 multiplex drive modes

? Programmable frame frequency in the range of 45 Hz to 300 Hz; factory calibrated

with a tolerance of ?3 Hz (at 80 Hz)

? Selectable inversion scheme for LCD driving waveforms: frame or n-line inversion

? Diagnostic features for status monitoring

? Integrated temperature sensor with temperature readout

? On chip calibration of internal oscillator frequency and VLCD

? Laser marking at the back-side of the die for traceability of the lot number, wafer

number, and die position on the wafer

Applications

? Automotive

? Instrument clusters

? Climate control

? Car entertainment

? Car radio

? Industrial

? Consumer

? Medical and health care

? Measuring equipment

? Machine control systems

? Information boards

? White goods

? General-purpose display modules