PCF8534A

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 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 p...