8051 instruction set with examples

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THE 8051. INSTRUCTION SET THE STANDARD 8051/52 CPU REGISTERS. Example: The Accumulator holds 0C3H (11000011B) and register 0 holds 0AAH (10101010B). The following table lists the 8051 instructions by HEX code. Hex Code Bytes Mnemonic Operands 00 1 NOP 01 2 AJMP addr11 02 3 LJMP addr16 03 1 RR A 04 1 INC 8051 Microcontroller Instruction Set. 1-7. Atmel 8051 Microcontrollers Hardware Manual. 0509C–8051–07/06. Table 1-4. Instruction Opcodes in Hexadecimal Lists the byte encoding for the instruction. Operation, Lists, step-by-step, the operations performed by the instruction. Example, Shows proper use of the 8051 Instruction Set · ACALL - Absolute Call · ADD, ADDC - Add Accumulator (With Carry) · AJMP - Absolute Jump · ANL - Bitwise AND · CJNE - Compare and Jump if Not The microcontroller 8051 instructions set includes 110 instructions, 49 of which are single Example of register addressing mode follow.1. Microprocessors 1 The 8051 Instruction Set Microprocessors 1 Msc. · 2. Instruction Groups • The 8051 has 255 instructions – Every 8-bit opcode from 00 to FF Looping operation in the 8051: On repeating a sequence of instructions a certain number of times will result in the formation of loop. · Example: Multiply 15 by See the 8051 Architecture course for a more in depth look at the core. Page 5. 5. 5. Sample Memory Organization.