Pin Diagram and Pin description of 8086 Microprocessor

The following pin function descriptions are for the microprocessor 8086 in either minimum or maximum mode. 

AD0 - AD15 (I/O): Address Data Bus

A19/S6, A18/S5, A17/S4, A16/S3 (0): Address/Status

S6:

S3 & S4:

BHE /S7 (O): Bus High Enable/Status

RD (O): READ

TEST (I)

INTR (I): Interrupt Request

NMI (I): Non-Mask-able Interrupt

Reset (I)

Ready (I)

CLK (I): Clock

MN/MX (I): Maximum / Minimum

M/IO (O): Status line

WR (O): Write

INTA (O): Interrupt Acknowledge

ALE (O): Address Latch Enable

DT/ R (O): DATA Transmit/Receive

DEN (O): Data Enable

HOLD & HLDA (I/O): Hold and Hold Acknowledge

S2, S1, S0 (O): Status Pins

QS0, QS1 (O): Queue – Status

LOCK (O)

RQ/GT0 and RQ/GT1 (I/O): Request/Grant

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