下面是AT89S8252内部EEPROM的读写程序 (网上下载的)
我想是否把08H改成#08H 0F7H改成#0F7H
读程序：
MOV DPTR,#100H /*要访问的EEPROM地址*/
MOV A,08H /*置位EEMEN
ORL 96H,A
MOVX A,@DPTR /*读数据*/
MOV A,0F7H
ANL 96H,A /*清除EEMEN*/
写程序：
MOV DPTR,#100H /*要访问的EEPROM地址*/
MOV A,18H /*置位EEMEN和EEMWE*/
ORL 96H,A
MOV A,77H
MOVX @DPTR,A /*写数据77H*/
HERE: MOV A,96H
JNB ACC.1,HERE /*等待编程结束*/
MOV A,0E7H
ANL 96H,A /*清除EEMEN和EEMWE*/
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