1 12M Y1 R2 10k EA PSEN ALE P30 P31 P32 P33 P34 P35 P36 P37 VCC VCC U2 C1 0.1uF GND 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 P1.0/T2 P1.1/T2EX P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15 19 18 9 31 29 30 10 11 12 13 14 15 16 17 20 XTAL1 XTAL2 GND RST EA/VPP PSEN ALE P3.0/RxD P3.1/TxD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD VSS STC89C5X 1 2 3 4 5 6 7 8 9 VCC VCC 40 39 38 37 36 35 34 33 32 P00 P01 P02 P03 P04 P05 P06 P07 1 2 3 4 5 6 7 8 P10 P11 P12 P13 P14 P15 CLK SDA 21 22 23 24 25 26 27 28 P20 P21 P22 P23 P24 P25 P26 P27 R16 R17 10K 10K U3 1 2 3 4 5 C11 SDA CLK B_M W/R VCC ANT MPX LOUT ROUT GND TEA5767 100uF C10 0.1uF GND ANT 10 9 8 7 6 GND L R C7 1uF C6 1uF R22 50K 22p C3 GND 22p C4 VCC C5 10uF R11 4.7k UP DOWN WTUP WTDN 1 2 1 2 1 2 1 2 VCC GND L1 10uH SDA CLK GND A B C D 2 R? DISP1 ba ec d f P D g 1 S 2 S 3 S 4 S 0 0 P 1 0 P 2 0 P 3 0 P 4 0 P 5 0 P 6 0 P 7 0 P 0 2 P 1 2 P 2 2 P 3 2 P 1kX8 共阴 P30 P31 GND P1 1 2 3 Header 3 GND R20 50K R19 33k R21 33k R23 15k R24 15k C16 C8 100uF U4 8 7 6 5 IN1- IN1+ IN2+ IN2- 0UT1 VCC OUT2 GND TDA2822 100uF 3 J1 PWR2.5 1N4007 1 U1 LM7805 OUT IN VCCin 2 S1 D1 GND 3 C2 220uF P2 2 1 Header 2 9V GND 4 LED1 VCC R1 1k 1 GND GND VCC 0.1uF C14 100uF 1 2 3 4 GND R18 4.7 C9 C15 0.1uF R25 4.7 C12 100uF C13 100uF GND Speaker GND 3 Title Size A4 Date: File: Number Revision 2011/11/29 F:\实验项目\收音机\radio.SchDoc Sheet of Drawn By: 4 A B C D GND GND GND GND GND 双联电位器 1 2