PCF8538UG集成电路（IC）的显示驱动器规格书PDF中文资料

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