UM82C288
Features
- Provides mands and control for local and system bus
- Offers wide flexibility in system configurations
- Flexible mand timing
- Optional Multibus- patible timing
- Single +5V supply
General Description
The UM82C288 Bus Controller is a 20-pin Si-Gate CMOS ponent for use in 80286 microsystems. The bus controller provides mand and control outputs with flexible timing options. Separate mand 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 patible bus cycles, and high speed bus cycles.
- Multibus is a patented bus of Intel
Pin Configuration
READY Cl K
Sf
MCE ALE
MB CMDl Y
MRDC MWTC
VCC SO Mira DT/R DEN CEN/AEN CENl INTA IORC IOWC
Block Diagram
STATUS
[ SO S1 Miro
STATUS DECODER
Cl K CONTROL
INPUTS
CEN/AEN
CE~l
- CMDLY
READY
MAND...
