The external RAM of the 8051 microcontroller uses a 6116 chip. Programming example-EEWORLD

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Assume that the single-chip microcomputer uses 8051, the external ROM is not expanded, and the external RAM uses a 6116. The program will sequentially connect the contents of the 10B starting from the 0100H unit of the internal ROM to the 10B starting from the 100H unit of the external RAM.

Solution: MOV R2,#00H; source data buffer address offset 00H A

MOV R3,#0AH ; Byte length R3

MOV DPTR,#0100H ; Source data buffer first address DPTR

MOV A,R2 ；Source address offset A

MOVC A,@A+DPTR ；Transmit a data

MOVX @DPTR,A

INC DPTR; Source address (destination address) plus 1

DJNZ R3,L1; All data transmitted? Not yet, switch to L1 to continue transmitting

SJMP $; end

Keywords：MCU Reference address：The external RAM of the 8051 microcontroller uses a 6116 chip. Programming example

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