51单片机开发板原理图

51单片机最小系统开发板

1

2

3

4

5

6

U1

+5 h g f e d c b a 3 5 P0.7 P0.6

CON1 2 4 6 8 10 ISP 1 3 5 7 9 MOSI RESET SCK MISO

D

四位共阳数码管

~ISP下载接口给AT89单片机下载

10 P0.5 1 2 4 7 P0.4 P0.3 P0.2 P0.1

~ USB转串口电路~1功能 STC单片机下载程序 USB口供电与通信

C9 U4 P3.0 1 2 3 4 P3.1 5 6 7 8 9 10 11 12 13 14 TXD DTR RTS VDD RXD RI_N GND NC DSR_N DCD_N CTS_N SHTD E_CLK E_DA PL2303 R25 R26 27 27 OSC2 OSC1 PLL_TE GND_A NC LD_M TRI_S GND VCC NC GND V03.3 DM(D-) DP(D+) 28 Y1 27 C10 26 12M 25 24 23 22 21 20 19 18 17 16 15

20P

20P D

C4 0.1uF

1

2

3

12

LED4

9

8

R2

R3

R4

6

4

11 P0.0

+5

R5 R6 10K J1+5 JMPQ1 R12 1 P2.3 3906 B 560 C E 2 3 Q3 1 560 S4 3 2 1 12 S1 S2 P2.6 R14 P2.2 P2.7+5 D1 D2 D3 510R21 D4 510 R17 D5 510 R18 D6 510 R19 D7 D8 S3 2 P2.4 R7 10K R8 10K R9 10K

101 2

101 101 101

四个独立按键

U8 GND D+ DVCC USB VCC 4 U8S5 3 2 1 C14 C8 2K R27 100uF/50V 0.1uF C

P2.0

R13 1 560

Q2 3906 2 3

P2.5

C P2.1 R15 1 560

Q4 3906 3

3906

温度DS18B20~ 1红外 1838一体化接收 +5 B R10 10K

C2 0.1uF P3.3

OUT VDD GND

+5

U5

+5+5+5 C1 0.1uF VCC 3 LCD1602 U2 VSS VDD VO RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 BLK BLA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

R1 BOT TOP 10K 2

TAP

3 U3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VSS VDD VO RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 PSB NC RST VOUT LEDK LEDA 12864 JP1 1 3 5 7 9 11 13 15 H3 1 2 3 4 5 6 7 8 H8 H4 1 2 3 4 5 6 7 8 H8 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 U9 FM A B 2 P3.0 P3.1 P3.2 P3.3 P3.4 P3.5 P3.6 P3.7+5 C5 S6 0.1uF R11 10K 20P 20P 2 4 6 8 10 12 14 16 P1.0 P1.1 P1.2 P1.3 P1.4 MOSI MISO SCK P3.3 P3.2 P3.1 P3.0 1 2 3 4 5 6 7 8 13 12 11 10 RESET 9 U7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5(MOSI) P1.6(MISO) P1.7(SCK) P3.3(INT1) P3.2(INT0) (TXD)P3.1 (RXD)P3.0 RST VCC EA/VPP (AD0)P0.0 (AD1)P0.1 (AD2)P0.2 (AD3)P0.3 (AD4)P0.4 (AD5)P0.5 (AD6)P0.6 (AD7)P0.7 P3.4(T0) P3.5(T1) P3.6(WR) P3.7(RD) ALE/PROG PSEN (A8)P2.0 (A9)P2.1 (A10)P2.2 (A11)P2.3 (A12)P2.4 (A13)P2.5 (A14)P2.6 (A15)P2.7 40 31 39 38 37 36 35 34 33 32 14 15 16 17 30 29 21 22 23 24 25 26 27 28

3 2 1

R22 510 R23 510

SFH506-38

单片机系统部分 P0口接上接电阻 P1口接LED显示用STC12C5A60S2可作为AD输入口 C3 0.1uF+5 JP2 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P3.4 P3.5 P3.6 P3.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 1 2 3 4 5 6 7 8 9 Header 9 B

+5

U6 P3.7 2 1 DQ GND DS1820

P2.3 P2.4 P2.5 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7+5+5 P2.6

510 R20 R24 510

LCD12864

Header 8X2

2 JK1 VCC 1 GND 2 GND 3 Jack JP3 GND 1 3 5 7 2 4 6 8 VCC C6 0.1uF C13 100uF/50V VCC 3 5

S5 1 C7 4

+5 LCD1602 DS1 0.1uF R16 560

H2 1 2 3 4 5 6 7 8 H8 A

U8S5 6

C11

19

XTAL1 XTAL2 GND AT89S51

SW-DPDT-6

A

1

电源接口输入开关电路 1 2 3

2

VCCandGND

12864与 1602显示接口带对比度调节

Y2 18 C12 6M 20 R28 Title Size A3 Date: File: 5

3906 3

Q5 1 560

Number

Revision

J2 JMP 4

17-Jul-2011 Sheet of C:\Documents and Settings\Administrator\桌面\给客户~

1.DDB Drawn By: 6

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