PCF8566P datasheet(3/40 Pages) PHILIPS

3 / 40 page

1998 May 04

Philips Semiconductors

Product speciﬁcation

Universal LCD driver for low multiplex

rates

PCF8566

FEATURES

• Single-chip LCD controller/driver

• Selectable backplane drive configuration: static

or 2, 3 or 4 backplane multiplexing

• Selectable display bias configuration: static, 1⁄2 or 1⁄3

• Internal LCD bias generation with voltage-follower

buffers

• 24 segment drives: up to twelve 8-segment numeric

characters; up to six 15-segment alphanumeric

characters; or any graphics of up to 96 elements

• 24 × 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

• LCD and logic supplies may be separated

• 2.5 to 6 V power supply range

• Low power consumption

• Power saving mode for extremely low power

consumption in battery-operated and telephone

applications

• I2C-bus interface

• TTL/CMOS compatible

• Compatible with any 4-bit, 8-bit or 16-bit

microprocessors/microcontrollers

• May be cascaded for large LCD applications

(up to 1536 segments possible)

• Cascadable with the 40 segment LCD driver PCF8576C

• Optimized pinning for single plane wiring in both single

and multiple PCF8566 applications

• Space-saving 40 lead plastic very small outline package

(VSO40; SOT158-1)

• No external components required (even in multiple

device applications)

• Manufactured in silicon gate CMOS process.

GENERAL DESCRIPTION

The PCF8566 is a peripheral device which interfaces to

almost any Liquid Crystal Display (LCD) having 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/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).

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8566P

DIP40

plastic dual in-line package; 40 leads (600 mil)

SOT129-1

PCF8566T

VSO40

plastic very small outline package; 40 leads

SOT158-1

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