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BU34381 - Single-chip 4-bit microcontroller

Description

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

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 LCD controller / driver are programmable for CMOS output. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 91 Optical disc ICs FBlock diagram BU34381 92 Optic.

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Datasheet Details

Part number BU34381
Manufacturer ROHM
File Size 211.71 KB
Description Single-chip 4-bit microcontroller
Datasheet download datasheet BU34381 Datasheet

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Full PDF Text Transcription

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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 Portable CD-DA players, portable CD stereos FFeatures 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.
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