NXP Semiconductors
QN908x
DK User Guide
QN908x-DK
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© NXP B.V. 2017. All rights reserved.
User guide
Rev. 1.0
— June 2017
8 of 28
2.5 GPIO and Arduino interfaces
On the QN908x DK board, the J4, J5, J6, and J7 connectors all provide GPIO connection
outputs. The board is also compatible with the Arduino board interface. The interface
schematic is shown in
Fig 5
.
Fig 5.
QN908x DK board GPIO and Arduino interface
2.6 QN908x reset button
The reset button is used to provide a hardware reset to the QN908x device, as shown in
Fig 6
).
Fig 6.
Reset button
2.7 ISP mode jumper
JP15 is the ISP mode jumper used to set the QN908x ISP mode. When the jumper is
shorted, the PB02 chip mode pin is connected to GND and this function is enabled.
When the jumper is open, the ISP mode function is disabled, as shown in
Fig 7
.
Fig 7.
Chip mode jumper
