The PCA85232 is a 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 160 segments. It can easily
be cascaded for larger LCD applications. The PCA85232 is compatible with most
microcontrollers and communicates via the 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).