5 VB1 VCC C4 10uF C3 10uF 16 VCC D R1OUT 2x330 Ohm T2IN T1IN MAX232 R15 100 Ohm 10 VCC D2 Diode U3 TRIG THOLD C5 0.1uF OUT RESET DISCH C9 x 104 R3 120 HEADER B R4 S1 VCC S2 SWITCH R1 4.7K C8 JP1 B 75176 C7 DE RE 560 A R 11 VCC C D SW1 R2 U2 R2OUT C+ C1C2+ C2V+ V- 12 CONTV VCC R16 4.7K C CHU Y: + Mot Switch:SW1 hoac SW2 duoc ON + SW3 va SW4 cung ON hoac cung OFF C6 ICM7555 560 S4 SWITCH C2 10uF D3_Red VCC S3 SWITCH GND C1 10uF R1IN R2IN T1OUT T2OUT GND 13 14 SUB-D VCC D4_Green R7 U1 15 D VCC R6 VCC 0.1 uF RS232-485 Converter for PC NGUYEN GIA MINH THAO Red_LED Green_LED U4 TXD RXD VCC1 C12 2x 104 C10 R10 120 R DE RE JP2 B HEADER TRIG THOLD DISCH 0.1 uF OUT CONTV ICM7555 C11 0.1 uF A A U5 C13 A R12 3.9K D7 DIODE D 75176 V+ R17 100 Ohm VCC1 GND VCC1 B VCC1 TXD RXD D5 2x330 Ohm JP3 R8 VCC1 RESET VCC1 D6 VCC B R9 GND VCC1 Title RS232-485 Converter for EVBU_MCU Board RS232 TO RS485 CONVERTER Size B Date: Document Number Rev NGUYEN GIA MINH THAO _ HoangLongU Saturday, August 02, 2008 Sheet 1 of