PCF8534 datasheet(1/40 Pages) PHILIPS

Part #	PCF8534

Description	Universal LCD driver for low multiplex rates

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1 / 40 page

1.

General description

The PCF8534 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 60 segments and can easily be cascaded

for larger LCD applications. The PCF8534 is compatible with most

microprocessors / microcontrollers and communicates via a two-line bidirectional I2C-bus.

Communication overheads are minimized using a display RAM with auto-incremented

addressing, hardware subaddressing and display memory switching (static and duplex

drive modes).

2.

Features

PCF8534

Universal LCD driver for low multiplex rates

Rev. 00.05 — 20 February 2007

Preliminary datasheet

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

60 segment drives: up to thirty

8-segment numeric characters; up to

sixteen 15-segment alphanumeric

characters; or any graphics of up to

240 elements

60 x 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

1.8to5.5 V

Wide 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-bit, 8-bit or 16-bit

microprocessors/microcontrollers

May be cascaded for 2 LCD applications

No external components

Manufactured in silicon gate CMOS

process.

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PCF8534 Datasheet(PDF) 1 Page - NXP Semiconductors

PCF8534 Datasheet(HTML) 1 Page - NXP Semiconductors

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