PCF8562 Просмотр технического описания (PDF) - Philips Electronics

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PCF8562

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver

for low multiplex rates

Preliminary specification

PCF8562

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

• 32 segment drives: up to sixteen 8-segment numeric characters; up to eight 15-segment alphanumeric characters; or

any graphics of up to 128 elements

• 32 × 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

• No external components

• Compatible with chip-on-glass technology

• Manufactured in silicon gate CMOS process.

2 GENERAL DESCRIPTION

The PCF8562 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 32 segments.

The PCF8562 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

NAME

PCF8562TT

TSSOP48

plastic, 48 leads; body

PACKAGE

DESCRIPTION

VERSION

SOT362-1

November 22, 2004

3

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