Wi-Fi&Bluetooth Module Series
FCM561D-P_Hardware_Design
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61
3
Application Interfaces
3.1. Pin Assignment
1
GND
2
RESERVED
3
GND
4
CHIP_EN
5
GND
6
USB_DP
7
USB_DM
8
GND
9
VBAT
10
GPIO28
4
4
G
N
D
4
3
G
N
D
4
2
G
N
D
4
1
G
P
IO
8
4
0
G
P
IO
0
3
9
G
P
IO
1
3
8
U
A
R
T
1
_
T
X
D
3
7
U
A
R
T
1
_
R
X
D
3
6
G
N
D
3
5
G
P
IO
4
1
3
4
G
P
IO
4
3
3
3
G
P
IO
4
4
45
GND
46
GND
47
GND
48
GND
49
XTAL32K
50
GND
51
GND
32
GPIO45
31
GPIO19
30
GPIO20
29
GPIO21
28
GPIO22
27
GPIO23
26
MIC_P
24
SPK_P
23
SPK_N
67
GPIO46
66
GPIO47
65
GPIO18
64
GPIO17
63
GPIO15
62
GPIO16
61
GPIO14
7
6
G
N
D
7
5
G
N
D
7
4
G
N
D
7
3
G
P
IO
9
7
2
G
P
IO
2
4
7
1
G
P
IO
2
5
7
0
G
P
IO
2
6
6
9
G
P
IO
4
0
6
8
G
P
IO
4
2
1
1
G
P
IO
2
7
1
2
G
P
IO
3
5
1
3
G
P
IO
3
6
1
4
G
P
IO
3
7
1
5
G
P
IO
3
9
1
6
G
P
IO
3
8
1
7
G
N
D
1
8
G
P
IO
5
1
9
G
P
IO
4
2
0
G
P
IO
3
2
1
G
P
IO
2
2
2
G
N
D
5
3
G
P
IO
3
2
5
4
G
P
IO
3
4
5
5
G
P
IO
2
9
5
6
G
P
IO
3
0
5
7
G
P
IO
3
1
5
8
G
N
D
5
9
G
P
IO
7
6
0
G
P
IO
6
77
GND
78
GND
79
GND
80
GND
81
GND
82
GND
83
GND
84
GND
85
GND
GND
Pins with Different
Functions
USB
Power
CLK
Audio
UART
25
MIC_N
GPIO
Control Signal
5
2
G
P
IO
3
3
Figure 1: Pin Assignment (Top View)
