BU34381 Datasheet (Rohm) - Single-chip 4-bit microcontroller

BU34381, Single-chip 4-bit microcontroller

93 Optical disc ICs BU34381 94 Optical disc ICs FInput / output circuits BU34381 95 Optical disc ICs FElectrical characteristics (at 5V) (unless otherwise noted, Ta = 25_C, VDD = 5V) BU34381 96 Optical disc ICs BU34381 97 Optical disc ICs FElectrical characteristics (at 3V) (unless ot

Optical disc ICs Single-chip 4-bit microcontroller for CD-DA BU34381 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 components allow for multifunction applications with a low number of pins.

FApplications

BU34381 Features

* 1) High speed operations and low voltage. (VDD = 2.7 X 5.5V at 4.4MHz) 2) Internal 8-bit, 8-channel AD converter. 3) Internal pulse width counter. 4) Two internal serial input / outputs. 5) Internal 20-segment, 4-common LCD controller / driver. (usable with 3 commons) 6) All segments output by the