单项选择题

要把IAP15W4K61S4的P0口配置为准双向口,则P0M1和P0M1应该配置为?
A、P0M1=0x00 ,P0M0=0x00
B、P0M1=0xFF ,P0M0=0xFF
C、P0M1=0x0F ,P0M0=0x0F
D、P0M1=0xF0 ,P0M0=0xF0

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