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UM108xx
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© NXP Semiconductors N.V. 2016. All rights reserved.
User manual
Rev. 1.0 — 14 June 2016
10 of 23
NXP Semiconductors
UM108xx
QN9022 mini DK user guide
LED1 and LED2 are connected to GPIO P0.3 and P1.6 respectively. The connections are
shown in
. The LEDs are powered-up when the corresponding GPIO outputs
switch to logic LOW level.
2.9 Button
The QN9022 board offers two buttons which are connected to QN9022 device GPIO.
Button 1 and button 2 are connected to GPIO P2.0 and P2.1 respectively. See
for detailed circuits.
When using the buttons, the GPIO P2.0 and P2.1 must be configured as inputs. Logic
LOW input is applied to QN9022 when a button is pressed.
Fig 11. LED circuit
Fig 12. Button circuit