STC89C52 最小系统原理图


1

2

3

4

5

6

7

8

实时日历时钟
CX5
P0Y201 P0CX501 P0CX502

VCC

单总线温度传感器
P0R5010101

外部EEPROM
R5.1_2 5.1K P0R5010202 5.1K

9V-5V
1 P09V05V02 2 P09V05V03 3 P09V05V04 4

DGND C104_1 VCC R5.1_1 24CXX
P0C1040102 P0C1040101

电源部分
DGND LM1117
1 P0LM111701 GND
P0C101 P0LM111703

Power_Select
1 P0Power0Select02 2
P0Power0Select01

VCC
P0RJ101

AGND 1602 RJ1
P0RJ102 N0P20 P20 N0P21 P21 N0P22 P22 N0P10 P10 N0P11 P11 N0P12 P12 N0P13 P13 N0P14 P14 N0P15 P15 N0P16 P16 N0P17 P17

P0R5010301

P09V05V01

DGND CX6
P0Y202

P0C102

P0C202

A

P0CX602 P0CX601

DS18B20 AGND

24CXX AGND AGND USB USB C104_11 VCC AGND
P0USB01 N0D2 D2 N0D1 D1

27pF DGND

DS1302

P0R1K402 P0D002

N0P23 P23 N0P24 P24 N0P25 P25

N0P26 P26

SSCL N0SSDA SSDA
N0SSCL

C1

C104_2 104

C2 10uF

P0D001

Y2 32.768k

1 P0DS130201 VCC2 2 P0DS130202 X1 3 P0DS130203 X2 4 P0DS130204 GND

8 VCC1P0DS130207 7 SCLK P0DS130206 6 I/O P0DS130205 5 RST
P0DS130208

3 VD P018B2002 2 DQ P018B2001 1 GND
P018B2003

DGND

1 P0POW03 3 P0POW02 2
P0POW01

VIN

VOUT

P0SW01

P0SW02

P0C201

3

P0LM111702

2

P0C1040201 P0C1040202

P0RJ103

27pF

VCC

DS1302

18B20

P0R5010102

5.1K

104 P024CXX08 1 8 P024CXX01 A0 VCCP024CXX07 2 7 P024CXX02 A1 WPP024CXX06 3 6 P024CXX03 A2 SCL P024CXX05 4 P024CXX04 5 GNDSDA

AGND POW VCC

SW

VCC

DC_9V

10uF

D0

AGND

AGND AGND VDD DGND
P0L101

LCD液晶

P1
N0P10 P10 N0P11 P11 N0P12 P12 N0P13 P13 N0P14 P14 N0P15 P15 N0P16 P16 N0P17 P17

DGND STC89C52 P10 N0P11 P11 N0P12 P12 N0P13 P13 N0P14 P14 N0P15 P15 N0P16 P16 N0P17 P17 N0RST RST N0RXD RXD N0TXD TXD N0P32 P32 N0P33 P33 N0P34 P34 N0P35 P35 N0P36 P36 N0P37 P37 N0X2 X2 N0X1 X1
N0P10

P0C10401102 P0C10401101

VCC
P0R10002 N0X1 X1

R100
P0CX102 P0CX101 P0C301

P0Y102

P0Y101 P0CX201 P0CX202

P0KEY01 P0R10001

VCC CX2 27pF

ADC0804
VCC P00 N0P01 P01 N0P02 P02 N0P03 P03 N0P04 P04 N0P05 P05 N0P06 P06 N0P07 P07
N0P00

VCC
P0R5010402

C3

P0C302

P3
N0RXD RXD N0TXD TXD N0P32 P32 N0P33 P33 N0P34 P34 N0P35 P35 N0P36 P36 N0P37 P37

P32 VCC RJ3 5.1K
P0RJ301

N0P32 P0C56P01 P0C56P02

RESET
P0R5010702 P0KEY02

RST R5.1_7 5.1K

N0RST

DGND

B DGND

VCC

1 P0P302 2 P0P303 3 P0P304 4 P0P305 5 P0P306 6 P0P307 7 P0P308 8 P0P309 9 P0P3010 10
P0P301

C56P

VCC

KEY

10uF

3 P0ADC080403 WR 5 P0ADC080405 INTR 4 P0ADC080404 CLKIN R5.1_5 P0R5010502 P0ADC0804019 19 P0R5010501 CLKR 9 P0ADC080409 Vref/2 6 P0ADC080406 VIN+ 7 P0ADC080407 VIN8 P0ADC080408 AGND 10 P0ADC0804010 DGND

P0R5010401

CX1 27pF

Header 10 DGND

P0R5010701

P0RJ303

ALE N0PSEN PSENVCC N0P27 P27 N0P26 P26 N0P25 P25 N0P24 P24 N0P23 P23 N0P22 P22 N0P21 P21 N0P20 P20
N0ALE

Header 9

1 P0P002 2 P0P003 3 P0P004 4 P0P005 5 P0P006 6 P0P007 7 P0P008 8 P0P009 9 P0P0010 10
P0P001

R5.1_4

5.1K N0P33 P33

ADC0804

P0ADC0804020

20

100

11.0592M

P0

AGND 1 CS P0ADC080402 2 RDP0ADC0804018 18 D0P0ADC0804017 17 D1P0ADC0804016 16 D2P0ADC0804015 15 D3P0ADC0804014 14 D4P0ADC0804013 13 D5P0ADC0804012 12 D6P0ADC0804011 11 D7
P0ADC080401

56pF

P0RJ302

P0R5010601

P0R5010602

10K R5.1_6

Header 10 DGND VCC P2
P0W202 N0TXD TXD

P34 N0P35 P35 N0DATA0 DATA0 N0DATA1 DATA1 N0DATA2 DATA2 N0DATA3 DATA3 N0DATA4 DATA4 N0DATA5 DATA5 N0DATA6 DATA6 N0DATA7 DATA7
N0P34

P_S 3 2 1 P_S

P0P0S03 P0P0S02 P0P0S01

P0RJ203

复位和晶振

Y1

1 P0P102 2 P0P103 3 P0P104 4 P0P105 5 P0P106 6 P0P107 7 P0P108 8 P0P109 9 P0P1010 10
P0P101

104
P0STC89C52040 40 Vcc 39 P0.0/AD0 P0STC89C5203838 P0.1/AD1 P0STC89C5203737 P0.2/AD2 P0STC89C5203636 P0.3/AD3 P0STC89C52035 35 P0.4/AD4 P0STC89C5203434 P0.5/AD5 P0STC89C5203333 P0.6/AD6 P0STC89C5203232 P0.7/AD7 P0STC89C52031 31 EA P0STC89C52030 30 ALE/PROG P0STC89C52029 29 PSEN P0STC89C52028 28 P2.7/AD15 P0STC89C52027 27 P2.6/AD14 P0STC89C52026 26 P2.5/AD13 P0STC89C52025 25 P2.4/AD12 P0STC89C52024 24 P2.3/AD11 P0STC89C52023 23 P2.2/AD10 P0STC89C5202222 P2.1/AD9 P0STC89C5202121 P2.0/AD8 P0STC89C52039

VCC P00 N0P01 P01 N0P02 P02 N0P03 P03 N0P04 P04 N0P05 P05 N0P06 P06 N0P07 P07
N0P00

5.1K

1 P0STC89C5201 T2/P1.0 2 P0STC89C5202 T2EX/P1.1 3 P0STC89C5203 P1.2 4 P0STC89C5204 P1.3 5 P0STC89C5205 P1.4 6 P0STC89C5206 P1.5 7 P0STC89C5207 P1.6 8 P0STC89C5208 P1.7 9 P0STC89C5209 RST 10 P0STC89C52010 RXD/P3.0 11 P0STC89C52011 TXD/P3.1 12 P0STC89C52012 INT0/P3.2 13 P0STC89C52013 INT1/P3.3 14 P0STC89C52014 T0/P3.4 15 P0STC89C52015 T1/P3.5 16 P0STC89C52016 WR/P3.6 17 P0STC89C52017 RD/P3.7 18 P0STC89C52018 XTAL2 19 P0STC89C52019 XTAL1 20 P0STC89C52020 Vss STC89C52

1 P0501K02 2 P0501K03 3 P0501K04 4 P0501K05 5 P0501K066 P0501K077 P0501K088 P0501K09 9
P0501K01

VCC DD+ GND Shield

1 P0USB02 2 P0USB03 3 P0USB04 4 P0USB05 5

P0L102

1uH

P0R1K401

L1

R1K4 1K VCC

AGND DGND VCC
P0RJ201

1 P0160202 2 P0160203 3 P0160204 4 P0160205 5 P0160206 6 P0160207 7 P0160208 8 P0160209 9 P01602010 10 P01602011 11 P01602012 12 P01602013 13 P01602014 14 P01602015 15 P01602016 16
P0160201

GND VDD VO RS RW E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 BL1 BL2

P0R5010201

P0R5010302

R5.1_3

A

Header 16 AGND 12864 1 P01286402 2 P01286403 3 P01286404 4 P01286405 5 P01286406 6 P01286407 7 P01286408 8 P01286409 9 P012864010 10 P012864011 11 P012864012 12 P012864013 13 P012864014 14 P012864015 15 P012864016 16 P012864017 17 P012864018 18 P012864019 19 P012864020 20
P01286401

N0X2 X2

RJ2

P0RJ202 N0P20 P20 N0P21 P21 N0P22 P22 N0P10 P10 N0P11 P11 N0P12 P12 N0P13 P13 N0P14 P14 N0P15 P15 N0P16 P16 N0P17 P17

VCC

DGND VCC
P0R2002

AGND

AGND DGND R1K5
P0R1K502 P0RJ20002

ADC0804

AGND VCC AGND

VSS VDD VO RS/CS RW/SID E/SCLK DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 PSB NC RST VEE LED+ LED-

B

Header 10 DGND VCC
P0R1K102 P0R1K202

W2
P0R1K301 P0W201

P0NPN03 P0R2001

DGND R1K2 573_3 1 P05730301 OE N0P27 P27 11 P057303011 LE
N0P00 P00 N0P01 P01 N0P02 P02 N0P03 P03 N0P04 P04 N0P05 P05 N0P06 P06 N0P07 P07

R1K1
P0D301 P0R1K101 P0D601 P0R1K201

1K
P0D401 P0D501

1K
P0D701 P0D801

DGND

NPN
P0NPN01

P0R1K302

VCC C104_10 P057303020 20 104 P0C10401002 P0C10401001 VCC P057303010 10 GND
P057303019 19 Q0 P057303018 18 Q1 P057303017 17 Q2 P057303016 16 Q3 P057303015 15 Q4 P057303014 14 Q5 P057303013 13 Q6 P057303012 12 Q7 N0LED0 LED0 N0LED1 LED1 N0LED2 LED2 N0LED3 LED3 N0LED4 LED4 N0LED5 LED5 N0LED6 LED6 N0LED7 LED7

R1K3 NPN 1K
P0NPN02

AGND PL2303 P0PL2303028 1 P0PL230301 28 P0D1101 P0D1102 P0R1K1102 P0R1K1101 TXD OSC2 P0PL2303027 DGND 2 P0PL230302 27 1K DTR_N OSC1 P0PL2303026 26 D11 3 P0PL230303 RTS_N PLL_TST DGND N0VDD P0PL2303025 25 C104_14 P0C10401401 VDD 4 P0PL230304 104 C104_12 P0C10401402 VDD_232 GND_PLL N0P31 P0PL2303024 24 N0VDD P31 5 P0PL230305 VDD 104 P0C10401202 P0C10401201 RXD VDD_PLL P0PL2303023 23 6 P0PL230306 P0R10K102 P0R10K101 RI_N LD_MOD P0PL2303022 22 7 P0PL230307 R10K1 P0R10K202 P0R10K201 VDD GND TRI_MOD P0PL2303021 8 P0PL230308 21 R10K2 VDD GND P0PL2303020 N0VDD 9 P0PL230309 20 VDD DSR_N VDD P0PL2303019 DGND 10 P0PL2303010 19 C104_13 DCD_N RES P0PL2303018 18 11 P0PL2303011 P0C10401301 P0C10401302 CTS_N GND_3V3 P0PL2303017 17 12 P0PL2303012 P0R105K02 SHTD_N VDD_3V3 104 N0VDD P0PL2303016 N0D2 VDD P0R10K302 P0R10K301 P0PL2303013 13 16P0R180102 P0R180101 D2 EE_CLK DMP0PL2303015 VCC R10K3 P0R10K401 P0PL2303014 14 15P0R180202 P0R180201 R18_1 P0R10K402 EE_DAT DP R10K4 R18_2 C104_9 P057302020 20P0C1040902104 PL2303 P0C1040901 VCC P057302010 10 GND DGND R1K11
N0P30 P30 P057302019 19 Q0 P057302018 18 Q1 P057302017 17 Q2 P057302016 16 Q3 P057302015 15 Q4 P057302014 14 Q5 P057302013 13 Q6 P057302012 12 Q7 N0C0 C0 N0C1 C1 N0C2 C2 N0C3 C3 N0C4 C4 N0C5 C5 N0C6 C6 N0C7 C7

P0C402

R20 200

P0C401

蜂鸣器

N0P27 P27 N0P26 P26 N0P25 P25 N0P24 P24 N0P23 P23 N0P22 P22 N0P21 P21 N0P20 P20

1 P0P202 2 P0P203 3 P0P204 4 P0P205 5 P0P206 6 P0P207 7 P0P208 8 P0P209 9 P0P2010 10
P0P201

Header 20

200

R1K6
P0RJ20003 P0R1K602 P0R1K601

P0R1K501 P0RJ20001

AGND

2K C4 10uF

RJ200

2K

CX3
P0Y301 P0CX302 P0CX301

D1

P0Y302

D2 LED
P0D202 P0D302

D3 LED
P0D402

D4 LED
P0D502

D5 LED
P0D602

D6 LED
P0D702

D7 LED
P0D802

D8 LED

2 P05730302 D0 3 P05730303 D1 4 P05730304 D2 5 P05730305 D3 6 P05730306 D4 7 P05730307 D5 8 P05730308 D6 9 P05730309 D7 74HC573

Header 10 SW8 DGND
N0DATA0 DATA0 P0SW801 1 N0DATA1 DATA1 P0SW802 2 N0DATA2 DATA2 P0SW803 3 N0DATA3 P0SW804 DATA3 4 N0DATA4 DATA4 P0SW805 5 N0DATA5 DATA5 P0SW806 6 N0DATA6 DATA6 P0SW807 7 N0DATA7 P0SW808 DATA7 8 N0P20 16 P20 P0SW8015 N0P21 15 P21 P0SW8014 N0P22 14 P22 P0SW8013 N0P23 13 P23 P0SW8012 N0P24 12 P24 P0SW8011 N0P25 11 P25 P0SW8010 N0P26 10 P26 P0SW809 N0P27 9 P27 P0SW8016

P0D101

P0D201

MK1

VDD

P0MK101 P0MK102

27pF Y3 12M CX4
P0CX402 P0CX401

DGND

Mic1 AGND JP1
N0SSDA SSDA N0P36 P36 N0SSCL SSCL N0P37 P37

P0D102

27pF USB-232 TXD N0P31 P31 N0RXD RXD N0P30 P30
N0TXD

N0LED0 LED0

N0LED1 LED1

N0LED2 LED2

N0LED3 LED3

N0LED4 LED4

N0LED5 LED5

N0LED6 LED6

N0LED7 LED7

C

1 2 P0JP103 3 P0JP104 4
P0JP101 P0JP102

SW-DIP8

Header 4 S1 4X4矩阵键盘 1 P0S101 SW-PB S5 1 P0S501 SW-PB S9 1 P0S901 SW-PB S13
P0S1301 P0S902 P0S502 P0S102

P0R105K01

N0D1 D1

1 2 P0USB023203 3 P0USB023204 4
P0USB023201 P0USB023202

C

R1.5K

S2 2 1 P0S201 SW-PB S6 2 1 P0S601 SW-PB S10 1 P0S1001 SW-PB S14
P0S1302 P0S602 P0S202

S3 2 1 P0S301 SW-PB S7 2 1 P0S701 SW-PB S11 1 P0S1101 SW-PB S15
P0S1402 P0S702 P0S302

2

S4 1 P0S401 SW-PB S8 1 P0S801 SW-PB S12 1 P0S1201 SW-PB S16 1

DGND
P0S402

2

N0P14 P14

573_1
N0P37 P37

1 P05730101 OE 11 P057301011 LE 2 P05730102 D0 3 P05730103 D1 4 P05730104 D2 5 P05730105 D3 6 P05730106 D4 7 P05730107 D5 8 P05730108 D6 9 P05730109 D7

VCC C104_8 P057301020 20P0C1040802104 P0C1040801 VCC P057301010 10 GND 19 Q0 P057301018 18 Q1 P057301017 17 Q2 P057301016 16 Q3 P057301015 15 Q4 P057301014 14 Q5 P057301013 13 Q6 P057301012 12 Q7
P057301019

DGND 573_2
N0P36 P36 DGND N0P00 P00 N0P01 P01 N0P02 P02 N0P03 P03 N0P04 P04 N0P05 P05 N0P06 P06 N0P07 P07

Header 4

1 P05730201 OE 11 P057302011 LE 2P05730202 D0 3P05730203 D1 4P05730204 D2 5P05730205 D3 6P05730206 D4 7P05730207 D5 8P05730208 D6 9P05730209 D7

P0C1040701 P0C1040702 P0C1040601 P0C1040602 P0C1040501 P0C1040502

2

P0S802

2

N0P15 P15

2

P0S1002

2

P0S1102

2

P0S1202

2

N0P16 P16

1

2

P0S1401

1

2

P0S1501

1

P0S1502

2

P0S1601

P0S1602

2

N0P17 P17

74HC573

74HC573

0.1uF

P0C1040401 P0C1040402

N0P00 P00 N0P01 P01 N0P02 P02 N0P03 P03 N0P04 P04 N0P05 P05 N0P06 P06 N0P07 P07

a b c d e f g N0DP dp

N0G N0F N0E N0D N0C N0B N0A

DGND MAX232 15 P0MAX232015 GND C104_3 DGND
P0C1040302 P0C1040301 P0MAX23202 6 2 P0MAX23206 CAPCAP + P0MAX23201 4 P0MAX23204 1 CAP 2+ CAP 1+

DGND DB9 1 6 P0DB906 N0INN INN 2 P0DB902 7 P0DB907 N0OUTT OUTT P0DB903 3 8 P0DB908 4 P0DB904 9 P0DB909 5 P0DB905
P0DB901

VCC

P0MAX232016

16

C104_5 VCC 0.1uF
N0VCC

C104_6 0.1uF C104_7

SW-PB
N0P10 P10

SW-PB
N0P11 P11

SW-PB
N0P12 P12 N0P13 P13

SW-PB

8位数码管
SEG_2
N0P32 P32 P0S1702 P0S1802 N0P33 P33 P0S1902 N0P34 P34 P0S2002 N0P35 P35 N0DP dp g f e d c b a

C104_4 0.1uF 5 P0MAX23205 CAP 2N0INN INN

CAP 1-

P0MAX23203

3

0.1uF

SEG_1 dp g f e d c b a
N0A N0B N0C N0D N0E N0F N0G N0DP

14 7

P0MAX232014

P0MAX232011 11 RT-OUT1 T-IN1P0MAX232010 10 P0MAX23207 RT-OUT2 T-IN2

N0TXD TXD

DB9 DGND
N0RXD RXD

D

S17 SW-PB
P0S1701 P0S1801

S18 SW-PB
P0S1901

S19 SW-PB
P0S2001

S20 SW-PB
1

DGND

3 dp 5 P0SEG0205 g 10 P0SEG02010 f 1 P0SEG0201 e 2 P0SEG0202 d 4 P0SEG0204 c 7 P0SEG0207 b 11 P0SEG02011 a
P0SEG0203

C0 C1 C2 C3

6 8 P0SEG0209 9 P0SEG02012 12
P0SEG0206 P0SEG0208

N0C4 C4 N0C5 C5 N0C6 C6 N0C7 C7

3 dp 5 P0SEG0105 g 10 P0SEG01010 f 1 P0SEG0101 e 2 P0SEG0102 d 4 P0SEG0104 c 7 P0SEG0107 b 11 P0SEG01011 a
P0SEG0103

N0A N0B N0C N0D N0E N0F N0G

C0 C1 C2 C3

6 8 P0SEG0109 9 P0SEG01012 12
P0SEG0106 P0SEG0108

N0C0 C0 N0C1 C1 N0C2 C2 N0C3 C3

N0OUTT P0MAX232012 OUTT 13 P0MAX232013 12 RR-IN1 R-OUT1 P0MAX23209 8 P0MAX23208 9 RR-IN2 R-OUT2

2

2

2

2

D

MAX232

1

1

1

Title

Size 8LED 8LED A3 Date: File: 1 2 3 4 5 6

Number

Revision

2009-10-6 H:\51 7

BY

Sheet of \..\51.SCHDOC Drawn By: 8


相关文档

STC89C52最小学习板原理图
STC89C52最小系统
基于STC89C52多功能电子时钟系统程序+原理图
基于STC89C52单片机最小系统的设计
STC89c52 GPS lcd12864原理图
基于STC89C52单片机毕业设计_附_原理图_pcb图_源程序_仿真图
STC89C52开发板原理图
基于STC89C52单片机的电子密码锁(完整版) 附 仿真图 原理图
stc89c52单片机开发板电路原理图
电脑版