PCF8566 Datasheet, PDF(1/48 Page) NXP Semiconductors – Universal LCD driver for low multiplex rates

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PCF8566 Datasheet, PDF (1/48 Pages) NXP Semiconductors – Universal LCD driver for low multiplex rates

PCF8566

Universal LCD driver for low multiplex rates

Rev. 07 â 25 February 2009

Product data sheet

1. General description

The PCF8566 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 24 segments and can easily be cascaded

for larger LCD applications. The PCF8566 is compatible with most microprocessors or

microcontrollers and communicates via a 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).

2. Features

I Single-chip LCD controller/driver

I 24 segment drives:

N Up to twelve 7-segment numeric characters including decimal pointer

N Up to six 14-segment alphanumeric characters

N Any graphics of up to 96 elements

I Versatile blinking modes

I No external components required (even in multiple device applications)

I Selectable backplane drive conï¬guration: static or 2, 3, 4 backplane multiplexing

I Selectable display bias conï¬guration: static, 1â2 or 1â3

I Internal LCD bias generation with voltage-follower buffers

I 24 Ã 4-bit RAM for display data storage

I Auto-incremented display data loading across device subaddress boundaries

I Display memory bank switching in static and duplex drive modes

I LCD and logic supplies may be separated

I 2.5 V to 6 V power supply range

I Low power consumption

I Power-saving mode for extremely low power consumption in battery-operated and

telephone applications

I I2C-bus interface

I TTL and CMOS compatible

I Compatible with any 4, 8 or 16-bit microprocessor or microcontroller

I May be cascaded for large LCD applications (up to 1536 segments possible)

I Cascadable with 40-segment LCD driver PCF8576C

I Optimized pinning for plane wiring in both and multiple PCF8566 applications

I Space-saving 40-lead plastic very small outline package (VSO40; SOT158-1)

I Manufactured in silicon gate CMOS process

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