1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2021/3/15 星期一 Sheet of
File: J:\办公2021\电压表3.15\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
R9
Res2
GND
VCC
1
2
3
4
5
6
7
8
9
RP1
RESP
S1
SW-PB
A
B
C
D
E
F
G
DP
1
2
3
4
L1
AIN0
1
AIN1
2
AIN2
3
AIN3
4
AIN4
5
AIN5
6
AIN6
7
AIN7
8
AIN8
9
AIN9
11
REF+
14
REF-
13
SDO
16
ADDR
17
CS
15
CLK
18
EOC
19
AIN10
12
U2
TLC1543
S2
SW-PB
S3
SW-PB
S4
SW-PB
GND
GND
VCC
1K
R5
RPot
VCC
GND
1K
R6
RPot
VCC
GND
1K
R7
RPot
VCC
GND
1K
R8
RPot
VCC
GND
1K
R1
RPot
VCC
GND
1K
R2
RPot
VCC
GND
1K
R3
RPot
VCC
GND
1K
R4
RPot
VCC
GND
