BU34381 Ver la hoja de datos (PDF) - ROHM Semiconductor

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componentes Descripción

Fabricante

BU34381

Single-chip 4-bit microcontroller for CD-DA

ROHM Semiconductor 

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 compo-

nents 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 control-

ler / 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)

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