Jbc instruction in 8051

 

 

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8051 Instruction Set. ? Introduction ? CIP-51 architecture and memory organization review ? Addressing modes. O Register addressing O Direct addressing O JBC P1.3,ARRAY1 JBC P1.2,ARRAY2. ? If P1=56H (01010110), the above instruction sequence will cause the program to branch to the The 8051 ICs were built in HMOS, HMOS II and CHMOS technologies. The 8051 provides more powerful architecture, more powerful Instruction set and full duplex serial port. 0C 1 INC R4 0D 1 INC R5 0E 1 INC R6 0F 1 INC R7 10 3 JBC bit, offset 11 2 ACALL addr11 12 3 LCALL addr16 13 1 3.2 Description of all 8051 instructions. Here is a list of the operands and their meanings #data16 - is a 16-bit constant included as bytes 2 and 3 in instruction (0-65535) Syntax: JBC bit, [jump address]; Bytes: 3 (instruction code, bit address, jump address); STATUS register flags: No flags are All 8051 microcontroller instructions will work just as before in the 64K region starting at FF0000H. The MOVC instruction accesses the current active 64K Relative jumps include conditional jumps (CJNE, DJNZ, JB, JBC, JC, ) and the unconditional SJMP instruction. The addressable offset is -128 to 8051 / 8052 Instruction Set. Author : Craig Steiner Source : 8052.com. ACALL: Absolute Call. JBC: Jump if Bit Set and Clear Bit. The 8051 provides powerful addressing of its internal memory space. Any location can be incremented or decremented using direct addressing without going The code in the example above uses the JNB instruction, one of a series of bit-test instructions that jump if the addressed bit is set (JC, JB, JBC) The Intel MCS-51 (commonly termed 8051) is a single chip microcontroller (MCU) series developed by Intel in 1980 for use in embedded systems. The architect of the Intel MCS-51 instruction set was John H. Wharton. This 8051 Instruction Set Tutorial explains what is an Instruction, Instruction Format, Instruction types, One Operand Instruction, Two Operand Instruction in 8051 Microcontroller . 8051 Instruction Set Summary. Rn Register R7-R0 of the currently selected Register Bank. ACALL addr11 LCALL addr16 RET RETI AJMP addr11 LJMP addr16 SJMP rel JMP @A+DPTR JZ rel JNZ rel JC rel JNC rel JB bit,rel JNB bit,rel JBC bit,rel CJNE A,direct,rel. The 8051 Instruction Set Manual 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. A ANL <bit JBC bit,rel8 MOVX <dest,<src SETB bit 8051 assembler. Instruction Set 8051 instructions are divided into following groupsas given below: JBC, bit,rel, Jump if direct bit is set and clear bit, 24, 3, 0 0 0 1 0 0 0 In 8051, looping operation is done through the DJNZ instruction.Jump if CY=0, JB : Jump if bit=1, JNB: Jump if bit is not equal to 1,JBC: Jump if bit=1 and

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