8085 Timing Diagrams

Unit - I

Chapter - 5

(c) 8085 Timing Diagrams

Contents

5.1 Instruction Cycle, Machine Cycle and T-State         .... May-08, .... Dec.-09 ... Marks 6

5.2 Representation of Signals

5.3 Signal Timings

5.4 8085 Machine Cycles and their Timings ...  May-04,11,12,16, ... Dec.-05, 10, 12, 14, 15, 16,     June-12 ... Marks         10

5.5 Two Marks Questions with Answers

5.6 University Questions with Answers (Long Answered Questions)

We have seen the instruction set of the 8085 microprocessor. For clear understanding of the each instruction, it is necessary to see how microprocessor executes these instructions, which signals are activated to execute a particular instruction and at what instant. All this information can be plotted graphically. The graphical representation of the instruction execution in steps with respect to the time (clock signal) is called 'timing diagram/

In this chapter, we will first see what do we mean by instruction cycle, machine cycles and T- states. After clear understanding of these things we will see the rules and standards used in the timing diagrams and then we will see the timing diagrams of all 8085 instructions.