The BU9729K is a driver for segmented liquid crystal displays, which enables connection with a microcomputer through a serial interface. 4-bit common output and an internal power supply circuit for LCD drive make it possible to configure a low-cost display system.

FEATUREs
1) Serial interface (8-bit length).
2) Display RAM: 72bits, internal (up to 72 segments can be displayed).
3) Internal power supply circuit for liquid crystal drive.
4) Display duty: 1 / 4.
5) Low-voltage and low-current operation supported.

APPLICATIONs
    Movie projectors, car audio equipment, telephones