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
A3
Date: 2021/7/24 Sheet of
File: E:\电路城\电阻测量（ADS1110）\原理图\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
U1
80511 2
Y1
XTAL
30pF
C2
Cap
10uF
C1
Cap Pol1
30pF
C3
Cap
10K
R1
Res2
GND
VCC
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
1
2
3
4
5
6
7
8
9
RP1
RESP
S1
SW-PB
D1
LED3
GND
P30
P31
P32
P33
P34
P35
P36
P37
P10
P11
P12
P13
P14
P15
P16
P17
Vin Vout
GND
7805
Volt Reg
0.1uF
C5
Cap
100uF
C4
Cap Pol1
0.1uF
C7
Cap
100uF
C6
Cap Pol1
1
2
P1
电源接口
GND
VCC
S2
SW-SPST
10K
R2
Res2
VCC
GND
S3
SW-SPST
10K
R3
Res2
VCC
GND
S4
SW-SPST
10K
R4
Res2
VCC
GND
S5
SW-SPST
10K
R5
Res2
VCC
GND
P23
P22
P21
P20
P23P22P21P20
S6
SW-SPST
10K
R6
Res2
GND
VCC
P32
P33
2
3
6
4 7
1
8
5
U2
Op Amp
Q1
PNP
1
2
3
4
5
K1
Relay
VCC
GND
10K
R7
Res2
100K
R11
Res2
1
2
P1
电阻接口
GND
Q2
PNP
1
2
3
4
5
K2
Relay
VCC
GND
10K
R8
Res2
1K
R13
Res2
Q?
Q3
1
2
3
4
5
K3
Relay
VCC
GND
10K
R9
Res2
100
R14
Res2
Q4
PNP
1
2
3
4
5
K4
Relay
VCC
GND
10K
R10
Res2
10
R15
Res2
VCC
GND
1K
R16
RPot
Vo
Vo Vo Vo Vo
P14 P15 P16 P17
1
VIN+
6
VIN-
3
SCL
4
SDA
5
VDD
2
GND
U3
ADS1110
GND GND
VCC
P34
P35
