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MICROPROCESSOR INSTRUCTION REFERENCE->MOVC

MOVC    Move Code Byte: Move A,@A+<Base Register>

This instruction loads the accumulator with a byte from program memory.  The address of the byte fetched is the sum of the original unsigned eight bit accumulator and the contents of a 16 bit base register which may be either the data pointer or the program counter.  Sixteen bit addition is performed when adding the accumulator to the base register and so a carry of the from the low order byte will propogate through to to the high order byte.

Formats:
    

Description	Mnemonic	Bytes	Cycles

Move code byte using data pointer:	MOVC A,@A+DPTR	1	2
Move code byte using program counter:	MOVC A,@A+PC	1	2

For A,@A+PC, PC is incremented to the address of the following instruction (ie by 1) before being added with the accumulator.

    

PSW flags:	C	AC	F0	RS1	RS0	OV	P
	N/A	N/A	N/A	N/A	N/A	N/A	N/A

(N/A: Not affected)