Keil™, An ARM® Company

8051 Instruction Set Manual

8051 Instruction Set

The 8051 Instruction Set User's Guide explains the standard 8051 instructions. The 8051 Instruction Set is supported by the Keil Ax51 Macro Assembler and the in-line Assembler of the Keil Cx51 Compiler.

This manual contains the following chapters.

  • Opcodes provides a list of all opcodes ordered by opcode HEX value.
  • Instructions describes all of the 8051 instructions.

Revision History

  • September 2005: First draft.