PCF85133
Overview
The PCF85133 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 80 segments and can easily be cascaded for larger LCD applications.
- Single-chip LCD controller and driver
- Selectable backplane drive configuration: static or 2, 3, or 4 backplane multiplexing
- Selectable display bias configuration: static, 1⁄2, or 1⁄3
- Selectable frame frequency: 82 Hz or 110 Hz
- Internal LCD bias generation with voltage-follower buffers
- 80 segment drives:; Up to 40 7-segment numeric characters; Up to 20 14-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
