The PCF85134HL/1 is an universal LCD Segment Driver for multiplex rates up to 1:4. The peripheral device which interfaces to almost any liquid crystal 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 PCF85134 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 sub addressing and by display memory switching (static and duplex drive modes).
Single-chip LCD controller and driver
Cascading supported for larger applications
Internal LCD bias generation with voltage follower buffers
LCD and logic supplies may be separated
Low power consumption
No external components required
Display memory bank switching in static and duplex drive modes
