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General description

The PCA85162 is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD)1

with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 32 segments. It can be easily cascaded for larger LCD applications. The PCA85162 is compatible with most microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication overheads are minimized by a display RAM with auto-incremented addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes).

Features and benefits

? AEC-Q100 compliant for automotive applications

? Single chip LCD controller and driver

? Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing

? Selectable display bias configuration: static, 1 ?2, or 1?3

? Internal LCD bias generationwith voltage-follower buffers

? 32 segment drives:

?Up to sixteen 7-segment alphanumeric characters

? Up to eight 14-segment alphanumeric characters

? Any graphics of up to 128 elements

? 32 x 4-bit RAM for display data storage

? Display memory bank switching instatic and duplex drive modes

? Versatile blinking modes

? Independent supplies possible for LCD and logic voltages

? Wide power supply range: from 1.8 V to 5.5 V

? Wide logic LCD supply range:

?From 2.5 V for low-threshold LCDs

? Up to 8.0 V for guest-host LCDs and high-threshold twisted nematic LCDs

? Low power consumption

? Extended temperature range up to 95oC

? 400 kHz I2C-bus interface

? No external components required

? Manufactured insilicon gate CMOS process