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BU34440 Datasheet(PDF) 1 Page - Rohm |
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BU34440 Datasheet(HTML) 1 Page - Rohm |
1 / 7 page 101 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, tim- er / counter and all other functions required for CD control in a single compact package. FApplications Portable CD-DA devices, portable CD stereos 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. FPin assignments FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) |
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