HD66720

HD66720 (LCD-II/K8) (Panel Controller/Driver for Dot-Matrix Liquid Crystal Display with Key-Matrix) Preliminary Description The HD66720 dot-matrix liquid crystal display controller (LCD) and driver LSI incorporates a key-scan function and an LED display function, and displays alphanumeric character and symbols. A single HD66720 is capable of displaying a single 10-character line or two 8-character lines. In addition, a single line of up to 40 characters can be displayed with extension drivers. Since the HD66720 incorporates a 5 × 6 matrix key scan circuit and two LED drive circuits, it can control front panels of telephone, car stereos, audio equipment, printers, or facsimiles with a single chip. A three-line clock synchronous serial transfer method is adopted for interfacing with a microcomputer, which greatly decreases the number of interface signals and makes it easy to miniaturize systems. This LSI is especially suitable for panels which can display five European languages (Engli...