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Overview
The PCA8539 is a fully featured Liquid Crystal Display (LCD) driver, specifically designed for high-contrast Vertical Alignment (VA) LCD with multiplex rates up to 1:18. It generates the drive signals for multiplexed LCD containing up to 18 backplanes, 100 segments, and up to 1800 elements. The PCA8539 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 PCA8539 offers a programmable temperature compensation of the LCD supply voltage. The PCA8539 can be easily connected to a microcontroller by either the two-line I²C-bus or a four-line bidirectional SPI-bus.
Features
- AEC Q100 grade 2 compliant for automotive applications
- Single-chip LCD controller and driver
- Extended operating temperature range from -40 °C to +105 °C
- 100 segments and 18 backplanes allowing to drive any graphic with up to 1800 elements
- On-chip:
- Configurable 4, 3, or 2 times voltage multiplier generating LCD supply voltage, independent of VDD, programmable by instruction (external supply also possible)
- Integrated temperature sensor with temperature readout
- Temperature compensation of on-chip generated VLCDOUT. Selectable linear temperature compensation of VLCD
- Generation of intermediate LCD bias voltages
- Oscillator requires no external components (external clock also possible)
- Readout of RAM and registers possible
- Diagnostic features:
- Checksum on I²C and SPI bus
- Frame frequency: programmable from 45 Hz to 360 Hz
- 2960-bit RAM for storage (1800 bit for display data)
- Two-line I²C-bus interface or four-line SPI bus
- Multiplex drive mode 1:18 and 1:12
- Inversion modes:
- n-line (n = 1 to 7) inversion
- Frame inversion
- Large supply voltage range: VDD1: 2.5 V to 5.5 V (chip can be driven with battery cells)
- Analog supply voltage VDD2: 2.5 V to 5.5 V
- LCD supply voltage VLCD: 4 V to 16 V
- Very low current consumption (20 μA to 200 μA):
- Power-down mode: < 2 μA
Target Applications
-
Automotive:
- Instrument clusters
- Climate control display
- Car entertainment
- Car radio
- Industrial:
- Medical and health care
- Measuring equipment
- Machine control systems
- Information boards
- General-purpose display modules
- Consumer:
- White goods
- Home entertainment
Features
- AEC Q100 grade 2 compliant for automotive applications
- Single-chip LCD controller and driver
- Extended operating temperature range from -40 °C to +105 °C
- 100 segments and 18 backplanes allowing to drive any graphic with up to 1800 elements
- On-chip:
- Configurable 4, 3, or 2 times voltage multiplier generating LCD supply voltage, independent of VDD, programmable by instruction (external supply also possible)
- Integrated temperature sensor with temperature readout
- Temperature compensation of on-chip generated VLCDOUT. Selectable linear temperature compensation of VLCD
- Generation of intermediate LCD bias voltages
- Oscillator requires no external components (external clock also possible)
- Readout of RAM and registers possible
- Diagnostic features:
- Checksum on I²C and SPI bus
- Frame frequency: programmable from 45 Hz to 360 Hz
- 2960-bit RAM for storage (1800 bit for display data)
- Two-line I²C-bus interface or four-line SPI bus
- Multiplex drive mode 1:18 and 1:12
- Inversion modes:
- n-line (n = 1 to 7) inversion
- Frame inversion
- Large supply voltage range: VDD1: 2.5 V to 5.5 V (chip can be driven with battery cells)
- Analog supply voltage VDD2: 2.5 V to 5.5 V
- LCD supply voltage VLCD: 4 V to 16 V
- Very low current consumption (20 μA to 200 μA):
- Power-down mode: < 2 μA
Target Applications
-
Automotive:
- Instrument clusters
- Climate control display
- Car entertainment
- Car radio
- Industrial:
- Medical and health care
- Measuring equipment
- Machine control systems
- Information boards
- General-purpose display modules
- Consumer:
- White goods
- Home entertainment
Development Boards
Development Boards
OM13503:PCA8539 demoboard