8085 Microprocessor Lecture Notes

Introduction

• Welcome to the Engineering Funda family!
• This video is part of the 8085 microprocessor lecture series.
• Focus on explaining the architecture of the 8085 microprocessor.
• Reminder to subscribe to the channel.

Architecture Overview

• Steps to explain the architecture clearly.
• Important for students to understand the architecture.
• Mention of programming model of 8085.

Registers in 8085

• Total of 5 registers in 8085 architecture:
  • General purpose registers
  • Program counter
  • Instruction register
• Registers are essential for programming in C.

Program Counter and Execution

• Program Counter indicates the address of the first instruction.
• Fetches the data from memory.
• Data flow and timing control are crucial during execution.

Instruction Cycle

• Instruction cycle has various stages:
  • Fetch stage: Program counter fetches the instruction.
  • Decode stage: Instruction decoder identifies the operation to perform.
  • Execute stage: Executes the instruction based on controls.

Importance of the Control Unit

• The control unit manages timing and control signals.
• It ensures proper execution of instructions.
• Explained connections and operations in detail.

Memory and External Interfaces

• 8085 does not have its own memory.
• Requires external memory interfacing.
• Discussed how memory addresses are assigned during operations.

Practical Examples

• Examples provided to understand internal structures.
• Understanding of serial communication and execution of programs.
• Use of practical examples to clarify concepts.

Conclusion

• Encouragement to subscribe and engage with the content.
• Importance of practical knowledge in understanding microprocessors.
• Q&A encouraged in the comments for better understanding.