1 2 3 4

1 2 3 4
1
2
J9
RX
TX
CE
PWM1
J1
J2
D8
PWM4
PWM5
PWM6
D12
D13
A0
A1
A2
A3
A4
A5
Vin
GND
GND
5V
3V3
RESET
IOREF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1K
5
GND 1
2
3
5
OE VCC
A
GND Y
6
GND
TXD_X
4
SN74LVC1G125
GND
Switch
TXD_X
RXD_X
1
2
3
RESET
R2
T1
RESET
1
4
4.7K
R3
RST
2
3
U1
1
5
13
6
3
2
7
4
9
12
16
15
11
17
18
19
20
8
14
10
J16
5V
VCCB
3V3
4.7k
D2
GND
GND
GND
VCC
RESET
ON/SLEEP
PWM0/RISS
DIN/CONIFG
DOUT
PWM1
CD/DOUT_EN/DO8
DTR/SLEEP_RQ/DI8
CTS/DIO7
RTS/AD6/DIO6
ASSOC/AD5/DIO5
RF_TX/AD4/DIO4
COORD_SEL/AD3/DIO3
AD2/DIO2
AD1/DIO1
AD0/DIO0
NC
VREF
GND
B
GND
U2
C1
1
2
3
4
5
6
7
5V
RESET
100nF
TXD
RXD_X
GND
VCC
EN
RXD
TXD
6
7
APC220
XBee_pro
GND
C
J7
J17
5V
GND
SCL
SDA
1
2
3
4
1
2
3
4
A5
A4
A3
A2
A1
A0
VCCB
I2C
J6
D
R4
TXD
4 TXD
GND
I2C
5V
GND
PWM6
D4
D13
D12
3
TX
A
U3
2
3.3V
J5
5V
GND
SCL
SDA
C9
100nF
RXD_X
J8
J4
C
RX
1
GND
PWR_VIN
1
2
3
4
5
6
7
8
S1
CON12
GND
J3
1
2
3
4
5
6
PWR_VIN
CON12
D8
PWM4
PWM5
PWM6
D12
D13
GND
AREF
SDA
SCL
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
MOSI
SS
SCK
MISO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PWR_VIN
D13
Vin
PWR_VIN
5V
U4
3
C8
100nF
R1
4.7K
D3
SS14
C2
100nF
C3
100nF
C4
100nF
GND
Vout
2
J13
3.3V
C5
100nF
C6
4.7uF
C7
100nF
3.3V
1
2
3
4
GND
GND
VCCB
D1
GND
GND
GND
J14
2
1
GND
Vin
J15
J12
1
2
2
1
Title
D
IO Expansion Shield
PWR_VIN
Size
GND
Number
Revision
7.1
A4
SPI
Date:
File:
1
3.3V
Vin
ADJ
B
1
2
3
4
5
6
7
8
9
10
J10
D4
PWM2
PWM3
D7
1
2
3
4
5
6
7
8
9
10
11
12
RX
TX
CE
PWR_VIN
PWM1
D4
PWM2
PWM3
D7
4
1
1
2
3
4
5
6
7
8
A
3
2
3
2013-11-29
Sheet of
D:\产产产产\..\IO Expansion Shield V7.1.SchDoc
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