Single-chip 4-bit Microcontroller For

The BU34381 is a 4-bit microcomputer designed for CD-DA players, and has a wide array of internal I / O components, including an 8-bit, 8-channel AD converter, pulse width Counter (PWC), two serial I / O, and an LCD Controller / driver capable of displaying up to 80 segments. All LCD segments are programmable for CMOS output. These I / O compo- nents allow for multifunction applications with a low number of pins. By ROHM Co. Ltd.