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BU34440

Rohm
Part Number BU34440
Manufacturer Rohm
Description Single-chip 4-bit microcontroller
Published Apr 17, 2005
Detailed Description Optical disc ICs Single-chip 4-bit microcontroller for CD-DA BU34440 The BU34440 is a single-chip 4-bit microcontroller...
Datasheet PDF File BU34440 PDF File

BU34440
BU34440

Overview
Optical disc ICs Single-chip 4-bit microcontroller for CD-DA BU34440 The BU34440 is a single-chip 4-bit microcontroller designed for CD-DA and contains parallel I / O, serial I / O, timer / counter and all other functions required for CD control in a single compact package.
FApplications Portable CD-DA devices, portable CD stereos FPin assignments FFeatures 1) Low-voltage, high-speed operation (VDD=2.
3 X 5.
5V at 4.
4MHz).
2) 4k byte ROM, 256 nibble RAM.
3) Internal 8-bit SIO (LSB first).
4) 14 programmable pull-up input / outputs.
5) 5 programmable pull-up inputs.
FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 101 Optical disc ICs FBlock diagram BU3...


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