8051 RL Instruction

Rotate Accumulator Left

Instruction	RL A
Function	Rotate Accumulator Left
Bytes	1
Cycles	1
Encoding	0 0 1 0 0 0 1 1
Operation	An+1 = An WHERE n = 0 TO 6 A0 = A7
Description	The eight bits in the Accumulator are rotated one bit to the left. Bit 7 is rotated into the bit 0 position. No flags are affected.
Flags Affected	C AC F0 RS1 RS0 OV P
Example	The Accumulator holds the value 0C5H (11000101B). The following instruction, RL A leaves the Accumulator holding the value 8BH (10001011B) with the carry unaffected.
Bytes: Number of bytes required to encode the instruction. Cycles: Number of instruction cycles required to execute the instruction. Note that there are 12 oscillator cycles to one instruction cycle on a standard 8051. Encoding: Lists the byte encoding for the instruction. Operation: Lists, step-by-step, the operations performed by the instruction. Flags Affected: are highlighted in Bold

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Related topics:
8051 Logical Operation Instructions   |   8051 ANL Instruction   |   8051 ORL Instruction   |   8051 XRL Instruction   |   8051 CLR Instruction   |   8051 CPL Instruction   |   8051 RR Instruction   |   8051 RLC Instruction   |   8051 RRC Instruction   |   8051 SWAP Instruction

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List of topics: 8051

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