AT89S51单片机开发板电路原理图
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16
13
U6
CLK START
ALE
OE
IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7
D0 D1 D2 D3 D4 D5 D6 D7
ADD A ADD B ADD C
EOC
VREFGND
VREF+ VCC
ADC0809CCN_1 C7
DAC0832CS1
2
17 P0.0
AVDDR8
18 19
20 10 RXD 11 TXD 30 ALE 29 PSEN
C4 0. 1uF
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7
2 3 4 5 6 7 8 9
D1 D2 D3 D4 D5 D6 D7 D8
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
19 18 17 16 15 14 13 12
IN7
IN6
IN5
IN4
R19 5. 1K
R34 1K
IN3
R20 5. 1K
R35 1K
IN2
R21 5. 1K
R36 1K
IN1
R22 5. 1K
R23
R37 1K
1K
IN0
C9 0. 1uF
R24 AGND1K
C10 0. 1uF
R25 AGND1K
C11 0. 1uF
R26 AGND1K
C12 0. 1uF
14 P0.1 15 P0.2
1K
17
8 P0.3
P0.0
7
18 P0.4
P0.1
6
19 P0.5
P0.2
5
20 P0.6
P0.3
4
21 P0.7
P0.4
16
P0.5
15
P0.6
14
25 P0.0 P0.7
13
24 P0.1
23 P0.2
3
U5C
10
7 AVDD 12 11
8A 9B
Y 10
SN74LS02N
P0.1 P0.3 P0.5 P0.7 DGND
P1.0 P1.2 P1.4 P1.6 DVDD
1 3 5 7 9
2 4 6 8 10
P1.1 P1.3 P1.5 P1.7 DGND
P2.0 P2.2 P2.4 P2.6 DVDD
1 3 5 7 9
2 4 6 8 10
P2.1 P2.3 P2.5 P2.7 DGND
8 GND
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
COM
16 15 14 13 12 11 10 DVDD 9
ULN2003A
U4
a
b
a
c dfgb
e
e
c
f
d
g
dp
dp GND
a
a
a
a 11 a
a f gb
ba
c d
f
g
b
ba
c d
f
g
b
b ab
c d
f
g
b
c d
7 4 2
19
1
30pF 11.0592MHz
18
T1 T0
EA/VP
X1 X2
RESET1 DVDD RESET
9 RESET
SW-PB R6
1K
C17 10uF
RD 17 WR 16
RD WR
89C51 U5A
P00 P01 P02 P03 P04 P05 P06 P07
P20 P21 P22 P23 P24 P25 P26 P27 VCC
V-
6 C22
1uF
C23 0. 1uF
J4 1 6 2 7 3 8 4 9 5
DB-9
RS-232接口
D
3 Signal
2 1
C13 0.1uF
J6
CONNECT-8
4路5 02AT热 敏电阻输入
J5
4C路ON0N~E5CVT-电6 压信号输入
R27 DVDD 10K
Title
C14
0. 1uF
38Hz红外信号输入
11
AGND
J2 1
0~-5V
2
0~+10V
3
-5V~+5V
4 0~+5V
CONNECT-4
C
S3 P2.7
C8
AGND
0. 1uF
5. 1K 12
4
14
SW-PB S4
0. 1uF
LM324AN R18
11
P3.4
5. 1K
SW-PB
S5
P3.5
AGND
SW-PB
U8
DVDD
D
中断触发 按键输入电路
ALE RXD INT0 P3.4 WR
1 3 5 7 9
2 4 6 8 10
PSEN TXD INT1 P3.5 RD
A
7
DVDD
Header 2X5
Header 2X5
Header 2X5
Header 2X5
1 P0.7 2 P0.6 3 P0.5 4 P0.4 5 P0.3 6 P0.2 7 P0.1 8 P0.0 9 8 7 12 9 8 6
Green
6*220Ω
DS3
1
2
DVDD R3 8*220Ω
Yellow
U1
U2
DS7
SM420562
DS8
SM420564
1
B
DS4
1
2
DS5
Red
1
2
JP1
DS6 1
G2 reenJJJPPP111---DSS12S6135
2 4 6
Yellow
7
8
9 10
11 12
P1.0 1
P1.1 2
P1.2 3
1 11
OE LE
VCC GND
20 10
R4 SN74HC573AN_1 DVDD 1K
a
a 10
b
b9
c
c1
d
d4
e
e3
f
f6
g
g5
dp
dp 2
DVDD
C1 0. 1uF
a
b
a
c dfgb
e
e
c
f
d
g
dp
dp GND
U3
1 2 3 4 5 6 7
IN1 IN2 IN3 IN4 IN5 IN6 IN7
R28 200Ω
L1 0.1mH C16 L2 10uF 0. 1mH
2 1
+12V J7 1
+12V
2 -12V
-12V CONNECT-2
模拟电源 和数字电源
J1
1
+5V
2 GND
CONNECT-2
VR1 Vout
7805 JP5
Vin GND
J3 GND
VCC
B
C
Powerjack_F
C
R7 10K
GND RXD TXD ALE/P PSEN
39 P0.0 38 P0.1 37 P0.2 36 P0.3 35 P0.4 34 P0.5 33 P0.6 32 P0.7
21 P2.0 22 P2.1 23 P2.2 24 P2.3 25 P2.4 26 P2.5 27 P2.6 28 P2.7 DVDD 40
U9A
1 2
14 9
10
14
A
Y3
B
4
SN74LS08N GND
7
UV9CCC
5
A B
Y
8 14
SN74LS08N GND
7
VCC
U9B
A
Y6
B
SN74LS08N GND
7
VCC
U9D 12 A 13 B
Y 11
DVDD 14
SN74LS08N GND
VCC
7
INT0
8 7 6 5 4 3 2 1
AVDD
DVDD 14
GND VCC
7
AGND INT1
CS WR1 WR2 ILE XFER
DI0
VREF
DI1
DI2
RFB
DI3
DI4
IOUT1
DI5
IOUT2
DI6
DI7
AGND DGND
VDD
DAC0832LCJ C6
0. 1uF
AVDD
8
9
U7A
2
11
12
3
AGND AVDD 20
11
4
R9
R31
b c d
ed c dp
GND
e f
e
d
c
g
dp
dp GND
e f
e
d
c
g
dp
dp GND
e f
e
d
c
e f
g
dpg
dp GND dp
1 10 5 3
e f g dp
a2 b3 c4 d5 e6 f7 g8 dp 9
DVDD
DS9
D/A转 换输出电路
AVDD R29
C15源自文库
1. 6Ω
10uF
R30
1. 6Ω AGND
10K
2K
+12V
1
1 R12
5. 1K
LM324AN
U7C 9
10
3
4
C18
C5
10uF 0.1uF
8
LM324AN R15 5. 1K
11
-12V AGND
R16
5. 1K U7D R17 13
4
R33 2K
AVDD
R11 10KR13 10K
R10
R32
10K
2k
4
U7B
6
5
2
7
LM324AN R14 10K
R38 5*5.1K
DVDD S1
SW-PB S2
SW-PB
1
2
3
4
5
6
JP1-S1 JP1-S2
WR P2.6 RD
2A 3B
Y1
SN74LS02N
145U5BVACCGND
6B
Y
7
4 SN74LS02N
14
GND VCC
7
A/D转 换输入电路
ALE 10 6
22
9
IN0 26 IN1 27 IN2 28 IN3 1 IN4 2 IN5 3 IN6 4 IN7 5
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RESET
DVDD
INT113 INT102
P10 P11 P12 P13 P14 P15 P16 P17
INT1 INT0
Header 2X6 C2
C24 P3.5 15 0.1uF P3.4 14
2
30pF Y1
R5 31
C3
1K
DVDD
Size
A3
Date: File:
Number
Revision
2006-2-17
Sheet of
C:\Program Files\..\Sheet050903.SchDoc Drawn By:
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
低电平直 接驱动发光二极 管电路
AT89S51单片机实验开发板1#
4端口 扩展接口
单片机（ＱＱ群 ９１９８４３７７）
R1
DVDD
JP6
JP2
JP3
JP4
1
DS1
2
1
2
3
4
Red
5
DS2
A
6
1
2
R2
8*5.1k
P0.0 P0.2 P0.4 P0.6 DVDD
1 3 5 7 9
2 4 6 8 10
AGND
AVDD
TXD RXD
6
5
4
3
2
1
AGND
AGND
C19 1uF C20 1uF
1 3 4 5
C1+ C1C2+ C2-
VCC V+
16 2
C21 1uF
S6
11
T1
14
DAC0832CS
10
T2
7
12
R1
13
SW-DPDT
U10 SH0038
VCC GND
9
R2
15 GND MAX232
8
13
U6
CLK START
ALE
OE
IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7
D0 D1 D2 D3 D4 D5 D6 D7
ADD A ADD B ADD C
EOC
VREFGND
VREF+ VCC
ADC0809CCN_1 C7
DAC0832CS1
2
17 P0.0
AVDDR8
18 19
20 10 RXD 11 TXD 30 ALE 29 PSEN
C4 0. 1uF
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7
2 3 4 5 6 7 8 9
D1 D2 D3 D4 D5 D6 D7 D8
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8
19 18 17 16 15 14 13 12
IN7
IN6
IN5
IN4
R19 5. 1K
R34 1K
IN3
R20 5. 1K
R35 1K
IN2
R21 5. 1K
R36 1K
IN1
R22 5. 1K
R23
R37 1K
1K
IN0
C9 0. 1uF
R24 AGND1K
C10 0. 1uF
R25 AGND1K
C11 0. 1uF
R26 AGND1K
C12 0. 1uF
14 P0.1 15 P0.2
1K
17
8 P0.3
P0.0
7
18 P0.4
P0.1
6
19 P0.5
P0.2
5
20 P0.6
P0.3
4
21 P0.7
P0.4
16
P0.5
15
P0.6
14
25 P0.0 P0.7
13
24 P0.1
23 P0.2
3
U5C
10
7 AVDD 12 11
8A 9B
Y 10
SN74LS02N
P0.1 P0.3 P0.5 P0.7 DGND
P1.0 P1.2 P1.4 P1.6 DVDD
1 3 5 7 9
2 4 6 8 10
P1.1 P1.3 P1.5 P1.7 DGND
P2.0 P2.2 P2.4 P2.6 DVDD
1 3 5 7 9
2 4 6 8 10
P2.1 P2.3 P2.5 P2.7 DGND
8 GND
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
COM
16 15 14 13 12 11 10 DVDD 9
ULN2003A
U4
a
b
a
c dfgb
e
e
c
f
d
g
dp
dp GND
a
a
a
a 11 a
a f gb
ba
c d
f
g
b
ba
c d
f
g
b
b ab
c d
f
g
b
c d
7 4 2
19
1
30pF 11.0592MHz
18
T1 T0
EA/VP
X1 X2
RESET1 DVDD RESET
9 RESET
SW-PB R6
1K
C17 10uF
RD 17 WR 16
RD WR
89C51 U5A
P00 P01 P02 P03 P04 P05 P06 P07
P20 P21 P22 P23 P24 P25 P26 P27 VCC
V-
6 C22
1uF
C23 0. 1uF
J4 1 6 2 7 3 8 4 9 5
DB-9
RS-232接口
D
3 Signal
2 1
C13 0.1uF
J6
CONNECT-8
4路5 02AT热 敏电阻输入
J5
4C路ON0N~E5CVT-电6 压信号输入
R27 DVDD 10K
Title
C14
0. 1uF
38Hz红外信号输入
11
AGND
J2 1
0~-5V
2
0~+10V
3
-5V~+5V
4 0~+5V
CONNECT-4
C
S3 P2.7
C8
AGND
0. 1uF
5. 1K 12
4
14
SW-PB S4
0. 1uF
LM324AN R18
11
P3.4
5. 1K
SW-PB
S5
P3.5
AGND
SW-PB
U8
DVDD
D
中断触发 按键输入电路
ALE RXD INT0 P3.4 WR
1 3 5 7 9
2 4 6 8 10
PSEN TXD INT1 P3.5 RD
A
7
DVDD
Header 2X5
Header 2X5
Header 2X5
Header 2X5
1 P0.7 2 P0.6 3 P0.5 4 P0.4 5 P0.3 6 P0.2 7 P0.1 8 P0.0 9 8 7 12 9 8 6
Green
6*220Ω
DS3
1
2
DVDD R3 8*220Ω
Yellow
U1
U2
DS7
SM420562
DS8
SM420564
1
B
DS4
1
2
DS5
Red
1
2
JP1
DS6 1
G2 reenJJJPPP111---DSS12S6135
2 4 6
Yellow
7
8
9 10
11 12
P1.0 1
P1.1 2
P1.2 3
1 11
OE LE
VCC GND
20 10
R4 SN74HC573AN_1 DVDD 1K
a
a 10
b
b9
c
c1
d
d4
e
e3
f
f6
g
g5
dp
dp 2
DVDD
C1 0. 1uF
a
b
a
c dfgb
e
e
c
f
d
g
dp
dp GND
U3
1 2 3 4 5 6 7
IN1 IN2 IN3 IN4 IN5 IN6 IN7
R28 200Ω
L1 0.1mH C16 L2 10uF 0. 1mH
2 1
+12V J7 1
+12V
2 -12V
-12V CONNECT-2
模拟电源 和数字电源
J1
1
+5V
2 GND
CONNECT-2
VR1 Vout
7805 JP5
Vin GND
J3 GND
VCC
B
C
Powerjack_F
C
R7 10K
GND RXD TXD ALE/P PSEN
39 P0.0 38 P0.1 37 P0.2 36 P0.3 35 P0.4 34 P0.5 33 P0.6 32 P0.7
21 P2.0 22 P2.1 23 P2.2 24 P2.3 25 P2.4 26 P2.5 27 P2.6 28 P2.7 DVDD 40
U9A
1 2
14 9
10
14
A
Y3
B
4
SN74LS08N GND
7
UV9CCC
5
A B
Y
8 14
SN74LS08N GND
7
VCC
U9B
A
Y6
B
SN74LS08N GND
7
VCC
U9D 12 A 13 B
Y 11
DVDD 14
SN74LS08N GND
VCC
7
INT0
8 7 6 5 4 3 2 1
AVDD
DVDD 14
GND VCC
7
AGND INT1
CS WR1 WR2 ILE XFER
DI0
VREF
DI1
DI2
RFB
DI3
DI4
IOUT1
DI5
IOUT2
DI6
DI7
AGND DGND
VDD
DAC0832LCJ C6
0. 1uF
AVDD
8
9
U7A
2
11
12
3
AGND AVDD 20
11
4
R9
R31
b c d
ed c dp
GND
e f
e
d
c
g
dp
dp GND
e f
e
d
c
g
dp
dp GND
e f
e
d
c
e f
g
dpg
dp GND dp
1 10 5 3
e f g dp
a2 b3 c4 d5 e6 f7 g8 dp 9
DVDD
DS9
D/A转 换输出电路
AVDD R29
C15源自文库
1. 6Ω
10uF
R30
1. 6Ω AGND
10K
2K
+12V
1
1 R12
5. 1K
LM324AN
U7C 9
10
3
4
C18
C5
10uF 0.1uF
8
LM324AN R15 5. 1K
11
-12V AGND
R16
5. 1K U7D R17 13
4
R33 2K
AVDD
R11 10KR13 10K
R10
R32
10K
2k
4
U7B
6
5
2
7
LM324AN R14 10K
R38 5*5.1K
DVDD S1
SW-PB S2
SW-PB
1
2
3
4
5
6
JP1-S1 JP1-S2
WR P2.6 RD
2A 3B
Y1
SN74LS02N
145U5BVACCGND
6B
Y
7
4 SN74LS02N
14
GND VCC
7
A/D转 换输入电路
ALE 10 6
22
9
IN0 26 IN1 27 IN2 28 IN3 1 IN4 2 IN5 3 IN6 4 IN7 5
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RESET
DVDD
INT113 INT102
P10 P11 P12 P13 P14 P15 P16 P17
INT1 INT0
Header 2X6 C2
C24 P3.5 15 0.1uF P3.4 14
2
30pF Y1
R5 31
C3
1K
DVDD
Size
A3
Date: File:
Number
Revision
2006-2-17
Sheet of
C:\Program Files\..\Sheet050903.SchDoc Drawn By:
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
低电平直 接驱动发光二极 管电路
AT89S51单片机实验开发板1#
4端口 扩展接口
单片机（ＱＱ群 ９１９８４３７７）
R1
DVDD
JP6
JP2
JP3
JP4
1
DS1
2
1
2
3
4
Red
5
DS2
A
6
1
2
R2
8*5.1k
P0.0 P0.2 P0.4 P0.6 DVDD
1 3 5 7 9
2 4 6 8 10
AGND
AVDD
TXD RXD
6
5
4
3
2
1
AGND
AGND
C19 1uF C20 1uF
1 3 4 5
C1+ C1C2+ C2-
VCC V+
16 2
C21 1uF
S6
11
T1
14
DAC0832CS
10
T2
7
12
R1
13
SW-DPDT
U10 SH0038
VCC GND
9
R2
15 GND MAX232
8