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: 2021/11/15 Sheet of
File: I:\办公2021下\电流表11.15\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
Vin Vout
GND
7805
Volt Reg
30pF
C4
Cap
10uF
C5
Cap Pol1
30pF
C3
Cap
10K
R5
Res2
0.1uF
C7
Cap
100uF
C6
Cap Pol1
0.1uF
C9
Cap
100uF
C8
Cap Pol1
1
2
P1
电源接口
GND
GND
VCC
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
D4
LED3
GND
1K
R11
RPot
GND
P10
P11
P12
P13
P14
LED1
10K
R1
Res2
VCC
LED1
T1
Trans Eq
100K
R6
Res2
1
2
P2
220V
1
2
P3
负载
T2
Trans Eq
10K
R10
Res2
D2
Bridge1
GND
100uF
C2
Cap
10K
R9
Res2
A
电流测量
电源
ADC采样
单片机电源
报警灯
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
*
TLC1543
A
GND
VCC
P10
P11
P12
P13
P14