PCA8547AHT中文资料4 x 44 automotive LCD driver with integrated charge pump数据手册恩XP规格书

描述 Description

The PCA8547 is a fully featured Liquid Crystal Display (LCD) driver, specifically designedfor high-contrast Vertical Alignment (VA) LCD with multiplex rates up to 1:4. It generatesthe drive signals for any static or multiplexed LCD containing up to four backplanes,44 segments, and up to 176 elements. The PCA8547 features an internal charge pumpwith internal capacitors for on-chip generation of the LCD driving voltage. To ensure anoptimal and stable contrast over the full temperature range, the PCA8547 offers aprogrammable temperature compensation of the LCD supply voltage. The PCA8547 canbe easily connected to a microcontroller by either the two-line I²C-bus (PCA8547A) or athree-line bidirectional SPI-bus (PCA8547B).

特性 Features

AEC-Q100 compliant for automotive applications
Low-power single-chip LCD controller and driver
176 elements allowing to drive:up to 22 7-segment alphanumeric characters
up to 11 14-segment alphanumeric characters
Selectable backplane drive configuration: static, 2, or 4 backplane multiplexing
Software programmable internal charge pump for on-chip LCD voltage generation upto 9 V with internal capacitors
400 kHz I²C-bus interface (PCA8547A)
5 MHz SPI-bus interface (PCA8547B)
Programmable temperature compensation of VLCD with both, negative and positiveslopes in four temperature regions
Selectable display bias configuration
Wide range for digital power supply: from 1.8 V to 5.5 V
Wide LCD supply range: from 2.5 V for low threshold LCDs and up to 9.0 V for highthreshold twisted nematic LCDs
On-chip RAM for display data storage arranged in two banks
Display memory bank switching
Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz;factory calibrated
Integrated temperature sensor with temperature readout
On chip calibration of internal oscillator frequency and VLCD
Manufactured in silicon gate CMOS process
Two RAM banks provided

应用 Application

Instrument cluster
Car radio
Climate control units