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51实训板V3.1原理图(综合图)

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3 VCC C1 GND

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51最小系统
P1[0..7] P1[0..7] P2 P10 P11 P12 P13 P14 P15 P16 P17 1 3 5 7 9 11 13 15 P4 P30 P31 P32 P33 P34 P35 P36 P37 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16 P1.0 P1.1 MCU_RxD2 MCU_TxD2 P1.4 P1.5 P1.6 P1.7 U1 P1.0 1 P1.0/ADC0/CLKOUT2 VCC P1.1 2 P1.1/ADC1 P0.0 MCU_RxD2 3 P1.2/ADC2/ECI/RxD2 P0.1 MCU_TxD2 4 P1.3/ADC3/CPP0/TxD2 P0.2 P1.4 5 P1.4/ADC4/CPP1/SS P0.3 P1.5 6 P1.5/ADC5/MOSI P0.4 P1.6 7 P1.6/ADC6/MISO P0.5 P1.7 8 P1.7/ADC7/SCLK P0.6 RST 9 RST/P4.7 P0.7 MCU_RxD1 10 P3.0/RxD/INT RST2/P4.6/EX_LVD MCU_TxD1 11 MCU_RxD1 P3.1/TxD P4.5/ALE P3.2 12 MCU_TxD1 P3.2/INT0 P4.4/NA P3.3 13 P3.2 P3.3/INT1 A15/P2.7 P3.4 14 P3.3 P3.4/T0/INT/CLKOUT0 A14/P2.6 P3.5 15 P3.4 P3.5/T1/INT/CLKOUT1 A13/P2.5 P3.6 16 P3.5 P3.6/WR A12/P2.4 P3.7 17 P3.6 P3.7/RD A11/P2.3 XTAL2 18 P3.7 XTAL2 A10/P2.2 XTAL1 19 XTAL1 A9/P2.1 20 GND A8/P2.0 STC12C5A60S2 GND

AD 采集
P0[0..7] P1 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 1 3 5 7 9 11 13 15 P3 2 4 6 8 10 12 14 16 P00 P01 P02 P03 P04 P05 P06 P07 P0[0..7] VCC RP4 10K AD0

LED显示灯
P3[0..7] P3[0..7] P30 LED D1 D0

A P3[0..7] P3[0..7]

40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21

P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 EX ALE NA P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0

104 RP1 1 2 3 4 5 6 7 8 9 10K *8

GND P11 AD0短路帽 P32 P10 1 2 3 4 5 6 7 8 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD[0..7] AD0 104 C21 AD1 104 C22 AD2 104 C23 AD3 AD0 AD4 104 C25 AD5 104 C26 AD6 104 C27 AD7 104 GND P37 LED LED D7 P36 104 C24 P35 LED D6 P34 LED D5 LED D4 P33 C20 LED D3 LED D2 VCC RP3 1 2 3 4 5 6 7 8 9 1K *8

1 2

P31 A

EX ALE NA P5 P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0

1 2 3 P2[4..7] 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 P27 P26 P25 P24 FMQ E RW RS P2[4..7]

AD输入通道接口 P1[0..7] P1[0..7] P10 R16 P11 P12

XTAL2

MCU_RxD1 MCU_TxD1 MCU_RxD2 MCU_TxD2 B

MCU_RxD1 MCU_TxD1 MCU_RxD2 MCU_TxD2

Y1

XTAL1

第二功能口- 串行口

晶振电路
11.0592M C3 22pF C4 22pF

复位电路 VCC
K1 C2 10uF RST D8 1N4007 R1 10K

10K R17 AD1 10K R18 AD2 10K R19 AD3 10K R20 AD4 10K R21 AD5 10K R22 AD6 10K R23 AD7 10K

P13 P14 P15 P16 P17

B

GND GND

按键
P3[0..7] P3[0..7] P32 R12 1K P33 R13 1K P34 R14 1K P35 GND R15 1K K5 GND K4 K3 K2

U SB转U AR T模块
D9 MCU_RxD1 GND USB1 GND D+ DVCC 4 3 2 1 MCU_TxD1 1N4007 C7R2 300R 1uF Y2 12M C8 22pF C GND

GND U2 1 2 3 4 5 6 7 8 GND TXD RXD V3 UD+ UDXI XO CH340G C9 22pF VCC R232 RTS# DTR# DCD# RI# DSR# CTS# USB_VCC 16 15 C6 14 0.1uF 13 12 11 10 9 GND

L7805稳压模块
C5 10uF P8 1 2 Header 2 D10 1 1N4007 C15 220uF U4 Vin Vout VCC_5V 3

LC D 1602液晶显示
对比度调节 VCC
RP2 VO 10K GND VCC VO RS RW E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 7 8 9 10 11 12 13 14 U5 LCD1602

LCD1602
LED+ LED15 16 VCC P0[0..7]

2

VCC

P_GND

RS RW E

P00 P01 P02 P03 P04 P05 P06 P07

VO

GND

1 2 3 4 5 6

USB-4-A USB_VCC

C16 10uF 7805

78XX GND

GND

P0[0..7]

四位数码管(小型)
P0[0..7] P0[0..7] P00 P01 P02 P03 LED1 11 7 4 2 a b c d e f g dp a b f f g e c e a b f g c e a b g c e f a g c b

C

232通信模块
C10 GND DB1 1uF U3 C12 1 C1+ VCC 5 2 V+ GND 9 C13 3 C1T1OUT 4 1uF 4 C2+ R1IN 8 C14 1uF 5 C2R1OUT 3 RxIN 6 VT1IN 7 T2OUT7 T2OUT T2IN 2 TxOUT 1uF R2IN 8 R2IN R2OUT 6 GND 1 MAX232 GND GND VCC C11 16 15 14 T1OUT 1uF 13 R1IN 12 MCU_RxD1 11 MCU_TxD1 10 MCU_TxD2 9 MCU_RxD2 USB_VCC VCC_5V 6 5 4 C17 220uF C18 10uF P_GND 3 1 2 SW1 GND GND C19 220uF VCC

LED1

LED2

LED3

d dp

d dp

d dp

LED4

P04 1 P05 10 P06 5 P07 3

d dp VCC

12

9

8

蜂鸣器驱动电路
VCC P12 B R7 100R P27 1 2

R3 10K E E Q1 8550 C B R8 100R P26 C

R4 10K E Q2 8550 B R9 100R P25 C

R5 10K Q3 8550 E B R10 100R P24 C GND

6 R6 10K Q4 8550

RS232 VCC P6 D 1 2 3 TXD选择 T1OUT TxOUT T2OUT P7 1 2 3 RXD选择 R1IN RxIN R2IN 3 1 D11 LED R11 300R VCC

模块供电选择
E P9 Header 2X2 R24 10K C GND P2[4..7] Title Size FMQ GND Number Revision GND GND B Q5 8550 U6 D

FMQ

P2[4..7]

GND

GND

4 2

蜂鸣

A3 Date: File: 6 2015/9/6 Sheet of E:\51单片机开发板\51实训板V3.1原理图 Drawn (综合图 By: ).SchDoc 7 8

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