Department Of Electronics

8051 Instruction Set ARITHMETIC OPERATIONS Mnemonic                           Description ADD A,Rn                         Add register to Accumulator   ADD A,direct                Add direct byte to Accumulator   ADD A,@Ri                   Add indirect RAM to Accumulator   ADD A,#data                 Add immediate data to Accumulator   ADDC A,Rn                   Add register to Accumulator with Carry ADDC A,direct  ...

** Explain 8051 instruction set (or) classification of 8051 instruction set (or) types of instructions.             Depending on operation   all instructions are divided in fivel groups: ·          Data Transfer Instructions ·          Arithmetic Instructions ·          Logic Instructions ·          Branch Instructions ·          Bit-oriented Instructions (or) Boolean instructions. Data   Transfer instructions :                      In 8051 microcontroller MOV,MOVC,MOVX,PUSH,POP,XCH and XCHD instructions are used to transfer data between registers and memory locations.        ...