PCF8576DH/2 데이터 시트보기 (PDF) - Philips Electronics

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PCF8576DH/2

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low

multiplex rates

Product specification

PCF8576D

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 and 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-incremental 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 to 5.5 V

• Wide logic LCD supply range: from 2.5 V for

low-threshold LCDs and up to 6.5 V for guest-host LCDs

and high-threshold (automobile) twisted nematic LCDs

• Low power consumption

• 400 kHz I2C-bus interface

• TTL/CMOS compatible

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

microcontrollers

• May be cascaded for large LCD applications (up to

2560 elements possible)

• No external components

• Compatible with chip-on-glass technology

• Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

The PCF8576D 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 PCF8576D 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-incremental

addressing, by hardware subaddressing and by display

memory switching (static and duplex drive modes).

3 ORDERING INFORMATION

TYPE NUMBER

PCF8576DH

PCF8576DT

NAME

TQFP64

TSSOP56

PCF8576DU/DA

PCF8576DH/2(1)

PCF8576DT/2(1)

−

TQFP64

TSSOP56

PCF8576DU/DA/2(1)

−

PCF8576DU/2DA/2(1)

−

PACKAGE

DESCRIPTION

VERSION

plastic thin quad flat package; 64 leads; body 10 × 10 × 1.0 mm SOT357-1

plastic thin shrink small outline package; 56 leads; body width SOT364-1

6.1 mm

chips in tray

−

plastic thin quad flat package; 64 leads; body 10 × 10 × 1.0 mm SOT357-1

plastic thin shrink small outline package; 56 leads; body width SOT364-1

6.1 mm

chips in tray

−

chip with bumps in tray

−

Note

1. These types have improved EMC immunity.

2004 Dec 22

3

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