PCF8534A Universal LCD driver for low multiplex rates Rev. 6 25 July 2011 Product data sheet 1. General description The PCF8534A is a peripheral device which interfaces to almost any Liquid Crystal 1 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. It can be easily cascaded for larger LCD applications. The PCF8534A is compatible with most 2 microcontrollers and communicates via the two-line bidirectional I C-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 1 1 Selectable display bias configurations: static, , or 2 3 Wide logic power supply range: from 1.8 V to 5.5 V LCD and logic supplies may be separated Low power consumption 2 400 kHz I C-bus interface No external components required Display memory bank switching in static and duplex drive modes Versatile blinking modes Silicon gate CMOS process 1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19.PCF8534A NXP Semiconductors Universal LCD driver for low multiplex rates 3. Ordering information Table 1. Ordering information Type number Package Name Description Delivery form Version 1 PCF8534AHL/1 LQFP80 plastic low profile quad flat tape and reel SOT315-1 package 80 leads body 12 12 1.4 mm PCF8534AU/DA/1 wire bond die 76 bonding pads chip in tray PCF8534AU 2.91 2.62 0.38 mm 1 Not to be used for new designs. Replacement part is PCF85134HL/1. 4. Marking Table 2. Marking codes Type number Marking code PCF8534AHL/1 PCF8534AHL PCF8534AU/DA/1 PC8534A-1 PCF8534A All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 6 25 July 2011 2 of 52