PCF8534A datasheet(1/52 Pages) NXP

Part #	PCF8534A

Description	Universal LCD driver for low multiplex rates

PDF	52 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The PCF8534A is a peripheral device which interfaces to almost any Liquid Crystal

Display (LCD)1 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. It can be easily

cascaded for larger LCD applications. The PCF8534A is compatible with most

microcontrollers and communicates via the 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).

• PCF8534AHL/1 should not be used for new design-ins. Replacement part is

PCF85134HL/1

2.

Features and benefits

 AEC-Q100 compliant (PCF8534AH/1) for automotive applications

 Single-chip LCD controller and driver

 Selectable backplane drive configurations: static or 2, 3, or 4 backplane multiplexing

 60 segment outputs allowing to drive:

 30 7-segment numeric characters

 15 14-segment alphanumeric characters

 Any graphics of up to 240 elements

 Cascading supported for larger applications

 60

 4-bit display data storage RAM

 Wide LCD supply range: from 2.5 V for low threshold LCDs up to 6.5 V for high

threshold twisted nematic LCDs

 Internal LCD bias generation with voltage follower buffers

 Selectable display bias configurations: static, 1⁄2, or 1⁄3

 Wide logic power supply range: from 1.8 V to 5.5 V

 LCD and logic supplies may be separated

 Low power consumption

 400 kHz I2C-bus interface

 No external components required

 Display memory bank switching in static and duplex drive modes

 Versatile blinking modes

 Silicon gate CMOS process

PCF8534A

Universal LCD driver for low multiplex rates

Rev. 6 — 25 July 2011

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19.

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