PCF8576C Просмотр технического описания (PDF) - Philips Electronics

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PCF8576C

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low multiplex

rates

Product specification

PCF8576C

1 FEATURES

• Single-chip LCD controller/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 twenty 8-segment numeric

characters; up to ten 15-segment alphanumeric

characters; or any graphics of up to 160 elements

• 40 × 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

• Wide power supply range: from 2 V for low-threshold

LCDs and up to 6 V for guest-host LCDs and

high-threshold (automobile) twisted nematic LCDs.

A 9 V version is also available on request.

• 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

2560 segments possible)

• Cascadable with 24-segment LCD driver PCF8566

• Optimized pinning for plane wiring in both and multiple

PCF8576C applications

• Space-saving 56-lead plastic very small outline package

(VSO56) or 64-lead low profile quad flat package

(LQFP64)

• No external components

• Compatible with chip-on-glass technology

• Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

The PCF8576C 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 and can easily be cascaded for larger LCD

applications. The PCF8576C 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).

3 ORDERING INFORMATION

TYPE NUMBER

PCF8576CT

PCF8576CU

PCF8576CU/2

PCF8576CU/5

PCF8576CU/7

PCF8576CU/10

PCF8576CU/12

PCF8576CH

NAME

VSO56

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−

−

−

FFC

FFC

LQFP64

PACKAGE

DESCRIPTION

plastic very small outline package; 56 leads

chip in tray

chip with bumps in tray

unsawn wafer

chip with bumps on tape

chip-on-film frame carrier

chip with bumps on film frame carrier

plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm

VERSION

SOT190-1

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−

−

−

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SOT314-2

1998 Jul 30

3

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