PCF8534A

更新时间： 2024-11-18 04:35:03

品牌	Logo	应用领域
恩智浦 - NXP		驱动器
页数	文件大小	规格书
41页	839K
描述
Universal LCD driver for low multiplex rates

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PCF8534A 数据手册

PCF8534A

Universal LCD driver for low multiplex rates

Rev. 00.90 — 4 February 2008

Product data sheet

1. General description

The PCF8534A 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 PCF8534A 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

Single-chip LCD controller / driver

Selectable backplane drive configuration: static or 2 / 3 / 4 backplane multiplexing

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

May be cascaded for larger applications

60 × 4-bit RAM for display data storage

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

Internal LCD bias generation with voltage-follower buffers

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

Wide logic power supply range: from 1.8 to 5.5 V

LCD and logic supplies may be separated

Low power consumption

400 kHz I²C-bus interface

Compatible with 4-bit, 8-bit or 16-bit microprocessors/microcontrollers

No external components

Display memory bank switching in static and duplex drive modes

Auto-incremented display data loading across device subaddress boundaries

Versatile blinking modes

TTL/CMOS compatible

Manufactured in silicon gate CMOS process

Automotive AEC-Q100 compliant.

12 3 4 5 6 7...41

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