The document discusses the architecture and instruction sets of the 8085 microprocessor and 8051 microcontroller. It covers the pin diagram, addressing modes including direct, register, register indirect, immediate and implicit for the 8085. It also lists the instruction groups for the 8085 including data transfer, arithmetic, logical, branch, stack, I/O and machine control. Additionally, it mentions the opcode fetch cycle for the 8085 and provides a block diagram of the 8051 microcontroller.

1. UNIT II
8085 MICROPROCESSOR AND
8051 MICROCONTROLLER

2. ARCHITECTURE OF 8085

3. Pin diagram

4. ADRESSING MODES IN 8085
• Direct addressing
• Register addressing
• Register indirect addressing
• Immediate addressing
• Implicit addressing

5. Instruction sets 8085
• Data transfer group
• Arithmetic group
• Logical group
• Branch group
• Stack, I/O and Machine control group

6. Opcode fetch cycle

7. Block diagram of 8051