參數(shù)資料
型號: BU34440
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO28
封裝: SOP-28
文件頁數(shù): 1/7頁
文件大小: 148K
代理商: BU34440
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.
Applications
Portable CD-DA devices, portable CD stereos
Features
1) Low-voltage, high-speed operation (V
DD
=2.3
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.
5.5V
Pin assignments
Absolute maximum ratings (Ta = 25 C)
Recommended operating conditions (Ta = 25 C)
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