Instruction Set of 8051 Microcontroller

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Instruction Set of 8051 Microcontroller

• Lets Explore!

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Agenda

• Types of Instructions
• Data transfer instructions.
• Arithmetic instructions
• Logical Instructions
• Program Control Instructions
• Bit manipulation instructions

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Types of Instructions in 8051 MC

• Data transfer instructions.
• Arithmetic instructions
• Logical Instructions
• Program Control Instructions
• Bit manipulation instructions

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Data transfer instructions

• Data transfer instructions are used to transfer
  the data between registers, memory, and ports.
  This is a kind of data movement instruction,
  application of which performs movement of data
  from one location to other locations.
• Examples
• MOV destination, source.
• XCH
• XCHD
• PUSH and POP

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Arithmetic instructions

• Arithmetic instructions of 8051 Microcontroller
  performs arithmetic operations like addition,
  subtraction, multiplication, and division.
• Advanced features of this set of instruction
  range to increment, decrement and adjust decimal
  operations.
• Examples
• ADD A, byte
• SUBB A, byte
• MUL AB
• DIV AB
• INC byte
• DEC byte
• DAA

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Logical Instructions

• The instruction performs logical operation
  between the source byte and destination byte.
• Example
• ANL destination, origin
• ORL destination, origin
• XRL destination, origin
• In case of Accumulator
• CLR A
• CPL A
• SWAP A
• RL A.
• RLC A
• A. RR.
• A. RRC.

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Bit manipulation instructions

• Bit manipulation instructions are used to
  manipulate the value of specified bit. It either
  sets, resets or complement the value of the
  destination bit.
• For example
• CLR bit
• SETB bit
• CPL bit

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