D C B A 1 2 3 4 5 6 主机模块 最小系统 VCC C2 + C1 PW 10uF J2 2 1 CON2 J3 2 1 CON2 P14 RST P30 P31 P32 1 P10 2 P11 3 P12 4 P13 5 6 P15 7 P16 8 P17 9 10 11 12 13 P33 14 P34 15 P35 16 P36 17 P37 18 X2 19 X1 20 S2 P1.0/T2 P1.1/T2EX P1.2/RX1 P1.3/TX1 P1.4/INT2 P1.5/INT3 P1.6/INT4 P1.7/INT5 RST/Vpd P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD XTAL2 XTAL1 GND(VSS) W77E58 VCC(VDD) P0.0(AD0) P0.1(AD1) P0.2(AD2) P0.3(AD3) P0.4(AD4) P0.5(AD5) P0.6(AD6) P0.7(AD7) EA/Vpp ALE PESN P2.7(A15) P2.6(A14) P2.5(A13) P2.4(A12) P2.3(A11) P2.2(A10) P2.1(A9) P2.0(A8) VCC 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 P00 P01 P02 P03 P04 P05 P06 P07 VCC P27 P26 P25 P24 P23 P22 P21 P20 P12 P14 P13 P30 P32 P31 S3 RX RO VCC B RE A DE DI GND TX MAX485 S4 RX RO VCC B RE A DE DI GND TX MAX485 端口扩展 VCC C3 CAP VCC C4 CAP RS485通讯电路 S5 120 S6 120 J4 CON2 1 2 S7 120 S8 120 CON2 J5 1 2 复位 VCC RST R2 10K JP1 1 3 5 7 电源扩展 2 4 6 8 X1 Y1 X2 11.0592 C5 30 C6 30 HEADER 4X2 晶振电路 VCC J1 2 1 CON2 GND SW-SPDT S1 VCC VCC R1 10K 电源输入 D1 LED P00 P01 P02 P03 P04 P05 P06 P07 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 P00 P01 P02 P03 P04 P05 P06 P07 J6 CON8 JP2 R_8 P10 P11 P12 P13 P14 P15 P16 P17 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 P10 P11 P12 P13 P14 P15 P16 P17 J7 CON8 JP3 R_8 P20 P21 P22 P23 P24 P25 P26 P27 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 P20 P21 P22 P23 P24 P25 P26 P27 J8 CON8 JP4 R_8 P30 P31 P32 P33 P34 P35 P36 P37 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 P30 P31 P32 P33 P34 P35 P36 P37 J9 CON8 JP5 R_8 1 2 3 4 Title Size B Date: File: 5 Number Revision 13-Jun-2011 F:\Protel 99 SE Designs\温湿度.ddb Sheet of Drawn By: 6 D C B A