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Signal Description of 80286

80286 is available in 68 pin .
CLK
This is the system clock input pin .

D15-D0
These are sixteen bidirectional data bus
 Lines .

BHE
This output signal ,  indicate that there is a transfer on the higher byte of the
Data bus .

S0-S1
These are the active low status output signal
Which indicates imitation of a bus cycle and  with 0 and COD / INTA , they define the type of the bus cycle.

INTR
Through this active high input , an external
device request 80286 to suspect the current instruction execution and serve the interrupt request.

Vss
This pin is a system ground pin of 80286 .

Vcc
This pin is used to apply +5v power supply voltage to the internal circuit of 80286 . 

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