本帖最后由 SonixSeeker 于 2014-7-21 11:31 编辑
Chip SN8P2711B
.DATA
CNT DS 1
.CODE
ORG 0H
JMP START
// ORG 8H
// JMP INT_SERVICE
ORG 10H
START:
// CALL _INIT_ENTRY
MOV A,#32H
B0MOV CNT,A
MOV A,#0XFF
B0MOV P0M,A
B0MOV P4M,A
B0MOV P5M,A
B0BSET FP53M
B0BSET FP03M
B0BCLR P5.3
B0BCLR P0.3
B0BCLR P0.2
ENDP
下载到芯片,焊到板上以后,P5.3,P0.3,P02却输出3.9V电平,请教这是为何?
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