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This tutorial includes 8051 microcontroller Instructions set of data moving, branching, arithmetic, logical operations etc. that a 8051 microcontroller makes use of. Interrupts & Programming 8051 Hardware Interrupts · Interrupts Types of Instructions in 8051 Microcontroller Instruction Set. Before seeing the types of instructions, let us see the structure of the 8051 Microcontroller Instruction. An 8051 Instruction consists of an Opcode (short of Operation – Code) followed by Operand(s) of size Zero Byte, One Byte or Two Bytes. 3.1 Types of instructions. Book: Architecture and programming of 8051 MCUs. Table of. Contents. Introduction. 1. . Otherwise, the program normally proceeds with the next instruction. JBC bit,rel, Jump if direct bit is set and clears bit. The 8051 micro-controller instructions are divided among five functional groups: . Such bit operations—one of the most powerful features of the MCS-51TM family of microcontrollers are not Bits may be set or cleared in a single instruction.Course Available from : 31-December-2009. NPTEL · Electronics & Communication Engineering; Microcontrollers and Applications (Web); 8051 Instruction Set. An instruction is made up of an operation code (op-code) followed by 8051. The SFRs are used as the configuration registers for peripherals within the device Atmel 8051 Microcontrollers Hardware. 1. 0509C–8051–07/06. Section 1. 8051 Microcontroller Instruction Set. For interrupt response time information, refer to 8051 Microcontroller Programs in Assembly Language . The 8051 microcontroller instruction set provides the AND, OR, XOR, TEST, NOT and Boolean logic Description: ACALL unconditionally calls a subroutine at the indicated code address. ACALL pushes the address of the instruction that follows ACALL onto the Instruction Set 8051 instructions are divided into following groups as given below: Arithmetic instructions Logical instructions Data transfer instructions Boolean