1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2019/12/5 Sheet of
File: F:\ \.. .SchDocDrawn By:
*
1
2
3
4
5
6
7
8
PR1
10k
C2
22
C3
22
R4
10k
VCC_5V
GND
VCC_5V
GND
GND
CRY1
12M
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5(MOSI)
6
P1.6(MISO)
7
P1.7(SCK)
8
REST
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(A8)
21
P2.1(A9)
22
P2.2(A10)
23
P2.3(A11)
24
P2.4(A12)
25
P2.5(A13)
26
P2.6(A14)
27
P2.7(A15)
28
PSEN
29
ALE/PROG
30
EA/VPP
31
P0.7(AD7)
32
P0.6(AD6)
33
P0.5(AD5)
34
P0.4(AD4)
35
P0.3(AD3)
36
P0.2(AD2)
37
P0.1(AD1)
38
P0.0(AD0)
39
VCC
40
U1
STC89C52
S1
SW-PB
1
2
3
4
J1
GND
VCC_5V
GND
P1
P2
C1
10uf
714
12
U2A
74VHC04
34
U2B
74VHC04
56
U2C
74VHC04
8 9
U2D
74VHC04
10 11
U2E
74VHC04
12 13
U2F
74VHC04
714
12
U8A
74VHC04
34
U8B
74VHC04
/CS1
1
/CS2
2
GND
3
VCC
4
V0
5
RS
6
R/W
7
E
8
DB0
9
DB1
10
DB2
11
DB3
12
DB4
13
DB5
14
DB6
15
DB7
16
/RST
17
-Vout
18
U5 12864LCD
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
GND
8
VCC
9
7C
10
6C
11
5C
12
4C
13
3C
14
2C
15
1C
16
U3
ULN2003A
VCC
1
A
2
B
3
C
4
D
5
GND
6
U4
1K
R1
E
E
R/W
R/W
RS
RS
/CS1
/CS2
/CS1
/CS2
GND
VCC_12V
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
GND
8
VCC
9
7C
10
6C
11
5C
12
4C
13
3C
14
2C
15
1C
16
U6
ULN2003A
VCC
1
A
2
B
3
C
4
D
5
GND
6
U7
GND
VCC_12V
GND
GND
VCC_5V
VCC_5V
VCC_5V
VCC_5V
GND
GND
1
2
P1
Header 2H
1
2
P2
Header 2H
GND
GND
VCC_12V
VCC_5V
12864LCD液晶显示模块
步进电机1驱动模块
步进电机2驱动模块
电源模块