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.
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)
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)
