1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2021/12/9 Sheet of
File: I:\办公2021下\步进电机\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
78L05
Volt Reg
30pF
C6
Cap
10uF
C5
Cap Pol1
30pF
C7
Cap
10K
R?
Res2
0.1uF
C2
Cap
100uF
C1
Cap Pol1
0.1uF
C4
Cap
100uF
C3
Cap Pol1
1
2
P1
电源接口
GND
GND
VCC
VCC
1
2
3
4
5
6
7
8
9
RP1
RESP
S1
SW-PB
S2
SW-PB
S3
SW-PB
S4
SW-PB
S5
SW-PB
S6
SW-PB
S7
SW-PB
GND
P10
P11
P12
P13
P14
P15
P10
P11
P12
P13
P14
P15
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
1C
16
2C
15
3C
14
4C
13
5C
12
6C
11
7C
10
COM
9
U2
ULN2003
M
B1
Motor Step
VCC
A
B
C
D
E
F
G
DP
1
2
DS1
D5
LED0
10K
R7
Res2
VCC
D6
LED0
10K
R8
Res2
D7
LED0
10K
R9
Res2
D8
LED0
10K
R10
Res2
D1
LED0
10K
R3
Res2
D2
LED0
10K
R4
Res2
D3
LED0
10K
R5
Res2
D4
LED0
10K
R6
Res2
P30
P31
P32
P33
P34
P35
P36
P37
P30
P31
P32
P33
P34
P35
P36
P37
