PCF85162 Datasheet, PDF (1/46 Pages) NXP Semiconductors – Universal LCD driver for low multiplex rates

PCF85162
Universal LCD driver for low multiplex rates
Rev. 3 — 16 June 2011
Product data sheet
1. General description
The PCF85162 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 32 segments. It can be easily
cascaded for larger LCD applications. The PCF85162 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).
2. Features and benefits
 Single chip LCD controller and driver
 Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
 Selectable display bias configuration: static, ¹â„₂, or ¹â„₃
 Internal LCD bias generation with voltage-follower buffers
 32 segment drives:
 Up to sixteen 7-segment numeric characters
 Up to eight 14-segment alphanumeric characters
 Any graphics of up to 128 elements
 32  4-bit RAM for display data storage
 Display memory bank switching in static and duplex drive modes
 Versatile blinking modes
 Independent supplies possible for LCD and logic voltages
 Wide power supply range: from 1.8 V to 5.5 V
 Wide logic LCD supply range:
 From 2.5 V for low-threshold LCDs
 Up to 6.5 V for guest-host LCDs and high-threshold twisted nematic LCDs
 Low power consumption
 400 kHz I²C-bus interface
 No external components required
 Manufactured in silicon gate CMOS process
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 17.