11.2 12位ad转换器ad578ad678ad1678接口.txt

MCS51单片机相关设计用到的一些子程序。用ASM文件编写

START:
MOV 	DPTR,#9000H				
MOVX  	DPTR,A
LOOP:
MOVX 	A,@DPTR						
JB 		ACC.7,LOOP
MOVX 	A,@DPTR						
MOV 	20H,A
MOV 	DPTR,#6000H					
MOVX 	A,@DPTR						
MOV 	21H,A
RET