1 2 3 4 5 6 D C B A VCC 系统复位 R1 10K D2 4007 /MCLR K1 SW-PB C1 104 12 4 3 系统时钟 Y1 4M C2 30P X1 X2 C3 30P 电源模块 VCC LED LED1 C4 4.7uF C5 C6 104 104 R3 1K J4 1 3 5 2 4 6 HEADER 3X2 珠海博科电子 TEL:13543855572 J2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CON20 /MCLR RA0 RA1 RA2 RA3 RA4 RA5 RE0 RE1 RE2 VCC GND X1 X2 RC0 RC1 RC2 RC3 RD0 RD1RD2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PIC16F877A U1 RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 VCC GND RD7 RD6 RD5 RD4 M_RXD M_TXD RC5 RC4 RD3 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 J3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CON20 仿真编程接口外部中断模块红外接收 J1 1 2 3 4 5 6 ICSP /MCLR VCC GND RB7 RB6 RB3 K2 SW-PB 外部中断按键 RB0 VCC R5 4.7K IC3 TL538B 123 RB0 VCC R6 1K 1个测试用LED LED2 LED VIA1 VIA2 VIA3 VIA4 1 1 1 1 R C 2 M_RXD +3.3V M_TXD GND USB 1 2 3 4 5 6 USB Y212M C7 22P C8 22P U2 PL2303HZ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 GND GND GND VCC GND +3.3V DM DP VCC R7 27 R8 27 DM DP R9 1.5K +3.3V +3.3V C9 104 USB供电及串行通信 Title D C B A 1 2 3 4 5 PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn NumberRevision Size B Date:15-Jun-2010Sheet of File:D:\PIC 单片机最小系统\PIC单片机最小系统.DdbDrawn By: 6