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GND
1, 3, 5, 8, 17, 22, 36, 42–48, 50, 51, 58, 74–85
Control Signal
Pin Name
Pin No.
CHIP_EN
4
UART1
Pin Name
Pin No.
UART1_TXD
38
UART1_RXD
37
USB Interface
Pin Name
Pin No.
USB_DP
6
USB_DM
7
RTC
Pin Name
Pin No.
XTAL32K
49
GPIO Interfaces
Pin Name
Pin No.
GPIO0
40
GPIO1
39
GPIO2
21
GPIO3
20
FCM561D-P_Hardware_Design
61
I/O
Description
DI
Enable the module
I/O
Description
DO
UART1 transmit
DI
UART1 receive
I/O
Description
USB 2.0
AIO
differential data (+)
USB 2.0
AIO
differential data (-)
I/O
Description
32.768 kHz clock
DI
input
I/O
Description
General-purpose
DIO
input/output
General-purpose
DIO
input/output
General-purpose
DIO
input/output
General-purpose
DIO
input/output
Wi-Fi&Bluetooth Module Series
DC
Comment
Characteristics
Hardware enable.
VBAT
Internally pulled up to 3.3 V.
Active high.
DC
Comment
Characteristics
VBAT
DC
Comment
Characteristics
USB 2.0 compliant.
Requires 85–100 Ω
differential impedance;
recommended to be 90 Ω.
Test point must be
reserved.
DC
Comment
Characteristics
RTC input.
If unused, keep it open.
DC
Comment
Characteristics
VBAT
Interrupt wakeup.
15 /
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