Pin Diagram and Pin description of 8085 Microprocessor

8085 is a 40 pin IC, The signals from the pins can be grouped as follows

Power supply and clock signals: -     It contains Vcc, Vss, X1, X2

Address bus: -     It contains A8-A15

Data bus: -     It contains AD0-AD7

Control and status signals: -     It contains ALE, RD, WR, IO/M

Interrupts and externally initiated signals: -     It contains TRAP, RST 7.5, RST 6.5, RAT 5.5, INTA, Reset In, Reset Out

Serial I/O ports: -     It contains SID, SOD

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