Shenzhen holyiot technology Co. LTD NRF52840 Benutzerhandbuch
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36
P1.04
Digital I/O
37
SWDIO
SWD for debug and programming
38
SWDCLK
SWD for debug and programming
39
P1.02
Digital I/O
40
P1.01
Digital I/O
41
P1.03
Digital I/O
42
P1.00
Digital I/O
43
P0.22
Digital I/O
44
GND
Ground
45
D+
Digital I/O
46
D-
Digital I/O
47
VBUS
Power
48
P0.18
Digital I/O
49
P0.19
Digital I/O
50
P0.21
Digital I/O
51
P0.23
Digital I/O
52
P0.12
Digital I/O
Trace data
53
P1.09
Digital I/O
Trace data
54
P0.07
Digital I/O
Trace clock
55
V_nRF(VDD/VDDH)
VDD/VDDH
3. Mounting our board on the host PCBA
We suggest that you mounting our RF board(Holyiot-18010_nRF52840) on the board , something like that .
1 . for the best Bluetooth performance , the antenna of the area need to extends about several mml without ground under the
antenna of the edge of the host PCB
2 . the next choise is that place our board at the corner of host PCB , the antenna of board need to extends several mm
outside of the Ground plane of the host PCB
antenna of the edge of the host PCB
2 . the next choise is that place our board at the corner of host PCB , the antenna of board need to extends several mm
outside of the Ground plane of the host PCB