8051 Unconditional and Conditional Jump

There are 2 types of Jump in 8051: Unconditional and Conditional

Unconditional Jump:
The unconditional jump is a jump in which control is transferred unconditionally to the target location.

Mnemonic	Description
AJMP addr11	Absolute Jump transfers program execution to the indicated address, which is formed at run-time
LJMP addr16	Long Jump causes an unconditional branch to the indicated address
SJMP rel (addr8)	Short Jump unconditionally to the address (relative) indicated
JMP @A+DPTR	Jump indirect relative to the DPTR

Conditional Jump:
The conditional jump is a jump in which control is transferred to the target location only if a specified condition is met. All conditional jumps are short jump.

Mnemonic	Description
JZ relative address	Jump if Accumulator is Zero
JNZ relative address	Jump if Accumulator is Not Zero
CJNE A, direct, relative address	Compare direct byte to Acc and Jump if Not Equal
CJNE A, #data, relative address	Compare immediate to Acc and Jump if Not Equal
CJNE Rn, #data, relative address	Compare immediate to register and Jump if Not Equal
CJNE @Ri,#data, relative address	Compare immediate to indirect and Jump if Not Equal
DJNZ Rn, relative address	Decrement register and Jump if Not Zero
DJNZ direct, relative address	Decrement direct byte and Jump if Not Zero
JC relative address	Jump if Carry is set
JNC relative address	Jump if Carry not set
JB bit address, relative address	Jump if Bit set
JNB bit address, relative address	Jump if Bit Not set
JBC bit address, relative address	Jump if Bit is set and Clear bit

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Related topics:
8051 Long Jump   |   8051 Absolute Jump   |   8051 Short Jump   |   8051 Indirect Jump   |   8051 Jump if Accumulator Zero   |   8051 Jump if Accumulator Not Zero   |   8051 Compare and Jump if Not Equal   |   8051 Decrement and Jump if Not Zero   |   8051 Jump if Carry is Set   |   8051 Jump if Carry is Not Set   |   8051 Jump if Bit Set   |   8051 Jump if Bit Not Set   |   8051 Jump if Bit is Set and Clear Bit

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List of topics: 8051

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