(PDF) UM82C288 Datasheet - Bus Controller

Número de pieza	UM82C288
Descripción	Bus Controller
Fabricantes	UMC
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No Preview Available ! I)UMC ================= UM82C288 Bus Controller Features • Provides commands and control for local and system bus • Offers wide flexibility in system configurations • Flexible command timing • Optional Multibus* compatible timing • Single +5V supply General Description The UM82C288 Bus Controller is a 20-pin Si-Gate CMOS component for use in 80286 microsystems. The bus controller provides command and control outputs with flexible timing options. Separate command outputs are used for memory and I/O devices. The data bus .is controlled with separate data enable and direction control signals. Two modes of operation are possible via a strapping option: Multibus compatible bus cycles, and high speed bus cycles. *Multibus is a patented bus of Intel Pin Configuration READY ClK Sf MCE ALE MB CMDlY MRDC MWTC GND VCC SO Mira DT/R DEN CEN/AEN CENl INTA IORC IOWC Block Diagram STATUS [ SO S1 Miro STATUS DECODER ClK CONTROL INPUTS CEN/AEN CE~l - CMDLY READY MB COMMAND OUTPUTS COMMAND OUTPUT lOGIC INTA] IORC IOWC MRDC MWTC DT/R DEN ALE MCE 7-'108 1 page

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PDF UM82C288 Data sheet ( Hoja de datos )