1 2 3 4 5 6 51系统模块 复位电路 最小系统 VCC C1 10uF + C2 PW RST R2 10K 1 P10 2 P11 3 P12 4 P13 5 P14 6 P15 7 P16 8 P17 9 RST 10 P30 11 P31 12 P32 13 P33 14 P34 15 P35 16 P36 17 P37 18 X2 19 X1 20 GND A1 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST/Vpd RXD/P3.0 TXD/P3.1 INT0/P3.2 INT1/P3.3 T0/P3.4 T1/P3.5 WR/P3.6 RD/P3.7 XTAL2 XTAL1 GND 80C52 Vcc 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) 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC P00 P01 P02 P03 P04 P05 P06 P07 VCC P27 P26 P25 P24 P23 P22 P21 P20 温湿度 J2 VCC 123 AM2301 S3 4.7k P20 下载端口 P31 P30 J10 2 1 CON2 VCC J1 CON2 2 1 GND R1 10K VCC 电源输入 S1 VCC SW-SPDT 晶振电路 D1 LED Y8 X1 11.0592 C3 30 X2 C4 30 1 3 5 7 JP1 2 4 6 8 HEADER 4X2 J4 8 7 6 5 4 3 2 1 CON8 端口扩展 J8 CON3 123 继电器 K1 2 3 5 1 4 RELAY-SPDT D2 DIODE S2 VCC RO RE DE DI VCC B A GND MAX485 C5 8 CAP 7 6 5 RX TX 1 P30 2 P32 3 4 P31 Q1 8550 VCC J9 200 P27 RS485电路 S4 120 S5 120 1 2 J3 CON2 P30 P31 P32 P33 P34 P35 P36 P37 J5 8 7 6 5 4 3 2 1 P10 P11 P12 P13 P14 P15 P16 P17 CON8 J6 1 2 3 4 5 6 7 8 P00 P01 P02 P03 P04 P05 P06 P07 CON8 J7 1 2 3 4 5 6 7 8 P20 P21 P22 P23 P24 P25 P26 P27 CON8 JP6 VCC P10 P11 P12 P13 P14 P15 P16 P17 1 2 3 4 5 6 7 8 9 JP7 VCC P27 P26 P25 P24 P23 P22 P21 P20 1 2 3 4 5 6 7 8 9 JP8 VCC P30 P31 P32 P33 P34 P35 P36 P37 1 2 3 4 5 6 7 8 9 R_8 R_8 R_8 D C B A 1 2 3 4 Title Size B Date: File: 5 Number Revision 18-Mar-2011 F:\Protel 99 SE Designs\温湿度.ddb Sheet of Drawn By: 6 D C B A