Schematic

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: 8/5/2015 Sheet of
File: E:\我的文档\..\Stepper Motor Shield V2.0 原理图.SchDocDrawn By:
RX
TX
CE
PWM1
D4
PWM2
PWM3
D7
PWM4
PWM5
PWM6
D13
GND
SDA
SCL
Vin
GND
GND
3V3
RESET
IOREF
AREF
SDA
SCL
GND
A0
A1
A2
A3
A4
A5
VCCB
GND
GND
RESET
R3
D2
GND
D13
PWM4
PWM5
PWM6
D13
GND
VCCB
3V3
VCC
1
RESET
5
ON/SLEEP
13
PWM0/RISS
6
DIN/CONIFG
3
DOUT
2
PWM1
7
CD/DOUT_EN/DO8
4
DTR/SLEEP_RQ/DI8
9
CTS/DIO7
12
RTS/AD6/DIO6
16
ASSOC/AD5/DIO5
15
RF_TX/AD4/DIO4
11
COORD_SEL/AD3/DIO3
17
AD2/DIO2
18
AD1/DIO1
19
AD0/DIO0
20
NC
8
VREF
14
GND
10
U2
2mm 10pin XBee Socket
GND
3.3V
R1
D1
R2
T1
GND
GND
RESET
GND
1
VCC
2
EN
3
RXD
4
TXD
5
6
6
7
7
U1
GND
C1
RESET
TXD_X
TXD
2
1
3
5
4
6
S1
R4
OE
1
A
2
GND
3
VCC
5
Y
4
U3
GND
GND
C2
RXD_X
TXD
RX
TX
RXD_X
TXD
RXD_X
TXD_X
3.3V
GND
1
1
2
2
3
3
6
6
5
5
4
4
switch1
1
1
2
2
3
3
6
6
5
5
4
4
switch2
R6
4.7K
R8
VDD
VDD
R5
100K
GND
GND
GND
GND
GND
D4
PWM2
PWM3
D7
R7
GND
VMM
VMM
VDD
VDD
M1_2B
M1_2A
M1_1A
M1_1B
M1_2A
M1_1A
M1_1B
M1_2B
M1_2A
M1_1A
M1_1B
M1_2B
M2_2B
M2_2A
M2_1A
M2_1B
M2_2A
M2_1A
M2_1B
M2_2B
M2_2A
M2_1A
M2_1B
M2_2B
MS1
2
MS2
3
RESET
5
MS3
4
SLEEP
6
STEP
7
DIR
8
ENABLE
1
GND
9
VDD
10
1B
11
1A
12
2A
13
2B
14
GND
15
VMOT
16
17
M1
MS1
2
MS2
3
RESET
5
MS3
4
SLEEP
6
STEP
7
DIR
8
ENABLE
1
GND
9
VDD
10
1B
11
1A
12
2A
13
2B
14
GND
15
VMOT
16
17
M2
XBEE_PART
DRIVER_PART
Enable1
Enable2
GND
3.3V
C3
GND
C10
C4
GND
C9
VMM
VMM
VMM
GND
C8
C7
R9
D3
Vin
3
Vout
2
ADJ
1
U4
C5
C6
VDD
POWER_PART
A0
A1
A2
A3
A4
A5
PIN_PART
OUTPUT PIN_PART
OUTSIDE CIRCUIT_PARTUNO I/O PIN_PART
COMMUNICATION PIN_PART
Enable1
Enable2
1
2
3
4
5
6
7
8
9
10
11
12
P2
RX
TX
CE
PWM1
VCCB
GND
VCCB
1
2
3
4
5
6
P3
1
2
3
4
5
6
7
8
P4
1
2
3
4
5
6
7
8
P6
1
2
3
4
5
6
7
8
9
10
P5
1
2
3
4
P8
1
2
3
P10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
P7
1
2
P14
1 2
P15
VCC3.3V
1
2
3
4
P9
1
2
3
4
P11
1
2
3
4
P13
S2
1
2
3
4
5
6
7
8
9
10
11
12
P1
1
2
3
4
P12
VDD
VDD
VDD
VDD
GND
R11
R12
GND
Stepper Motor Shield
V2.0