GND41GND40IO139IO238TXD037RXD036IO4235IO4134IO4033IO3932IO3831IO3730IO3629IO3528IO027IO4526IO4825IO4724IO2123IO1422IO1321IO1220IO1119IO1018IO917IO4616IO315IO2014IO1913IO812IO1811IO1710IO169IO158IO77IO66IO55IO44EN33V32GND1