PCF8533 Datasheet, PDF (1/45 Pages) NXP Semiconductors – Universal LCD driver for low multiplex rates

PCF8533
Universal LCD driver for low multiplex rates
Rev. 04 — 5 March 2010
Product data sheet
1. General description
The PCF8533 is a peripheral device which interfaces to almost any LCD¹ with low
multiplex rates. It generates the drive signals for any static or multiplexed LCD containing
up to four backplanes and up to 80 segments and can easily be cascaded for larger LCD
applications. The PCF8533 is compatible with most microprocessors or microcontrollers
and communicates via a two-line bidirectional I²C-bus. Communication overheads are
minimized by a display RAM with auto-incremental 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
„ 80 segment outputs allowing to drive:
‹ 40 8-segment alphanumeric characters
‹ 21 15-segment alphanumeric characters
‹ Any graphics of up to 320 elements
„ 80 × 4 bit RAM for display data storage
„ Auto-incremental display data loading across device subaddress boundaries
„ 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 LCD supply range for low-threshold LCDs, for guest-host LCDs and
high-threshold (automobile) twisted nematic LCDs from 2.5 V to 6.5 V
„ Low power consumption
„ 400 kHz I²C-bus interface
„ TTL/CMOS compatible
„ Compatible with 4-bit, 8-bit, or 16-bit microprocessors or microcontrollers
„ May be cascaded for large LCD applications (up to 5120 elements possible)
„ No external components required
„ Compatible with Chip-On-Glass (COG) technology
„ Manufactured using silicon gate CMOS process
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 18.