(T2)P1.01(T2EX)P1.12(ECI)P1.23(CEX0)P1.34(CEX1)P1.45(CEX2)P1.56(CEX3)P1.67(CEX4)P1.78RESET9(RXD)P3.010(TXD)P3.111(INT0#)P3.212(INT1#)P3.313(T0)P3.414(T1)P3.515(WR#)P3.616(WD#)P3.717XTAL218XTAL119VSS20P2.0(A8)21P2.1(A9)22P2.2(A10)23P2.3(A11)24P2.4(A12)25P2.5(A13)26P2.6(A14)27P2.7(A15)28PSEN#29ALE/PROG#30EA#/VPP31P0.7(AD7)32P0.6(AD6)33P0.5(AD5)34P0.4(AD4)35P0.3(AD3)36P0.2(AD2)37P0.1(AD1)38P0.0(AD0)39VCC40