1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Title
Number RevisionSize
A2
Date: 2021/7/26 Sheet of
File: E:\电路城\火灾（ 4路，烟雾）\电路图 \Sheet1.SchDocDrawn By:
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
RST
9
P3.0/RXD
10
P3.1/TXD
11
P3.2/INT0
12
P3.3/INT1
13
P3.4/T0
14
P3.5/T1
15
P3.6/WR
16
P3.7/RD
17
XTAL2
18
XTAL1
19
GND
20
P2.0
21
P2.1
22
P2.2
23
P2.3
24
P2.4
25
P2.5
26
P2.6
27
P2.7
28
PSEN
29
ALE/PROG
30
EA
31
P0.7
32
P0.6
33
P0.5
34
P0.4
35
P0.3
36
P0.2
37
P0.1
38
P0.0
39
VCC
40
U14
8051
1 2
Y1
XTAL
1K0
R39
Res Semi
30pF
C2
Cap
10uF
C1
Cap Pol1
15
A
14
D7
13
D6
12
D5
11
D4
10
D3
9
D2
8
D1
7
D0
6
E
5
RW
4
RS
3
V0
2
VCC
1
GND
16
K
LCD1602
LCD1
LCD1602
30pF
C3
Cap
1
2
3
4
5
6
7
8
9
RP1
RESP
GND
GND
1K
R38
Res Semi
VCC
VCC
VCC
26
IN0
27
IN1
28
IN2
1
IN3
2
IN4
3
IN5
4
IN6
5
IN7
25
ADD A
24
ADD B
23
ADD C
22
ALE
12
VREF+
16
VREF-
10
CLOCK
6
START
7
EOC
21
OUT1
20
OUT2
19
OUT3
18
OUT4
8
OUT5
15
OUT6
14
OUT7
17
OUT8
9
OE
U13
ADC0809
S1
SW-PB
OE
EOC
START
CLOCK
START
ADDC
ADDB
ADDAGND
VCC
OE
EOC
START
CLOCK
ADDA
SDA
SCK
ADDB
ADDC
1K
R2
Res Tap
WP
7
SDA
5
SCK
6
A2
3
A1
2
A0
1
U15
24C02
GND
SCK
SDA
SH_CP
11
DS
14
ST_CP
12
MR
10
OE
13
Q0
15
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
Q7‘
9
U17
74595
GND
S2
SW-PB
S3
SW-PB
S4
SW-PB
S5
SW-PB
GND
Q1
2N3906
1K0
R40
Res Semi
1K0
R41
Res Semi
D1
LED0
LS?
Speaker
GND
VCC
SH_CP
11
DS
14
ST_CP
12
MR
10
OE
13
Q0
15
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
Q7‘
9
U16
74595
Q2
2N3904
D2
LED0
1K0
R48
Res Semi
M
B4
Motor
GND
VCC
1K0
R49
Res Semi
Q3
2N3904
D3
LED0
1K0
R46
Res Semi
M
B3
Motor
GND
VCC
1K0
R47
Res Semi
Q4
2N3904
D4
LED0
1K0
R44
Res Semi
M
B2
Motor
GND
VCC
1K0
R45
Res Semi
Q5
2N3904
D5
LED0
1K0
R42
Res Semi
M
B1
Motor
GND
VCC
1K0
R43
Res Semi
GND
VCC
VCC
GND
1K
R3
Res Tap
VCC
GND
1K
R4
Res Tap
VCC
GND
1K
R5
Res Tap
VCC
GND
