(单选题)3: 单片机复位时作如下初始化操作( )
A: PC=0000, SP=00,P0=00,P1=00,P2=00,P3=00
B: PC=0030, SP=07,P0=00,P1=00,P2=00,P3=00
C: PC=0000, SP=07,P0=FF,P1=FF,P2=FF,P3=FF
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