BU34440 Datasheet PDF (Single-chip 4-bit microcontroller)

BU34440 - Single-chip 4-bit microcontroller

Description

BU34440 103 Optical disc ICs FInput / output circuits BU34440 104 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 5V) BU34440 105 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 3V) BU34440 106 Optical disc IC

Features

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 BU34440 102 Optical disc ICs FPin.

Datasheet Details

Part number	BU34440
Manufacturer	ROHM
File Size	148.57 KB
Description	Single-chip 4-bit microcontroller
Datasheet	BU34440 Datasheet

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Full PDF Text Transcription

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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.

Published: Apr 17, 2005 |