STC89C51单片机引脚功能介绍

C51单片机引脚功能介绍40-Pm DIPP1.0r1 V丿40□VDDP1.1匚239JPO.D, ADOP1.2匚338」P0 1, AD1P1.3匚437□P0.2. AD2P1.4匚536□P