PCA8576DU: Automotive 40 x 4 LCD segment driver for low multiplex ratesup to 1:4 ARCHIVED

Overview

Archived content is no longer updated and is made available for historical reference only.

The PCA8576D is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD) with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 40 segments. It can be easily cascaded for larger LCD applications. The PCA8576D 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).

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Features

AEC-Q100 compliant for automotive applications
Single chip LCD controller and driver
Selectable backplane drive configuration: static or 2, 3, 4 backplane multiplexing
Selectable display bias configuration: static, ¹/₂ or ¹/₃
Internal LCD bias generation with voltage-follower buffers
40 segment drives:
- Up to 20 7-segment numeric characters
- Up to 10 14-segment alphanumeric characters
- Any graphics of up to 160 elements
40 x 4-bit RAM for display data storage
Auto-incremented display data loading across device subaddress boundaries
Display memory bank switching in static 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 6.5 V for high-threshold twisted nematic LCDs
Low power consumption
400 kHz I²C-bus interface
May be cascaded for large LCD applications (up to 2560 elements possible)
No external components required
Compatible with chip-on-glass and chip-on-board technology
Manufactured in silicon gate CMOS process

MoreLess

Features

AEC-Q100 compliant for automotive applications
Single chip LCD controller and driver
Selectable backplane drive configuration: static or 2, 3, 4 backplane multiplexing
Selectable display bias configuration: static, ¹/₂ or ¹/₃
Internal LCD bias generation with voltage-follower buffers
40 segment drives:
- Up to 20 7-segment numeric characters
- Up to 10 14-segment alphanumeric characters
- Any graphics of up to 160 elements
40 x 4-bit RAM for display data storage
Auto-incremented display data loading across device subaddress boundaries
Display memory bank switching in static 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 6.5 V for high-threshold twisted nematic LCDs
Low power consumption
400 kHz I²C-bus interface
May be cascaded for large LCD applications (up to 2560 elements possible)
No external components required
Compatible with chip-on-glass and chip-on-board technology
Manufactured in silicon gate CMOS process

Data Sheets

Application Notes