NXP Semiconductors UM108 Series User manual

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UM108xx

QN9022 mini DK user guide

Rev. 1.0 — 14 June 2016 User manual

Document information

Info Content

Keywords mini DK, J-Link OB, UART, SWD, GPIO, LED, button, power supply,

buzzer

Abstract This user manual describes the features of the QN9022_MINIDK_Vx

board.

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Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: [email protected]

NXP Semiconductors UM108xx

QN9022 mini DK user guide

Revision history

Rev Date Description

v.1 201506013 initial release

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QN9022 mini DK user guide

1. Introduction

This user manual describes the hardware details of the QN9022 mini Development Kit

(DK).

1.1 Kit contents

The QN9022 mini development kit includes the following:

•QN9022 mini development board

•QN902x USB dongle

•USB cable

1.2 Additional resource

For additional resources, visit

http://www.nxp.com/products/microcontrollers-and-processors/more-processors/applicati

on-specific-mcus-mpus/bluetooth-low-energy-ble:BLUETOOTH-LOW-ENERGY-BLE

2. Hardware description

The QN9022 mini development board provides easy access to peripherals such as

buttons, piezo buzzer and LED. The board also provides useful interfaces such as a USB

port for UART communication and J-Link debug, and a GPIO/optional sensor board

connector.

A USB dongle is a Bluetooth device powered by the QN9020. It acts as a master when

communicating with the QN9022.

2.1 Hardware overview

The hardware blocks in the QN9022 mini DK, and the functional relationship of each main

component, are shown in Figure 1.

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QN9022 mini DK user guide

The component layout on both the sides of the board is shown in Figure 2 and Figure 3.

The detailed information of each component is listed in Table 1.

Fig 1. The QN9022 functional diagram

Fig 2. The QN9022 board top view

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Fig 3. The QN9022 board bottom view

Table 1. QN9022 board components list

Number Name Description

1 J-Link OB ATSAM3U2C; used to offer SWD and UART

interfaces for QN9022 debug and communication

2 connector optional; used for connecting sensor board

3 debug port debug port for ATSAM3U2CA

4 mini USB port power and communication port

5 power source select jumper used for power source selection; see Section 2.3

6 current measurement jumper used to measure the QN9022 device power

consumption

7 LDO (TPS73630) 5 V to 3 V regulator

8 button1 used as input; see Section 2.9

9 button2 used as input; see Section 2.9

10 LED2 used as output; see Section 2.8

11 QN9022 GPIO port used for interface extension

12 LED1 used as output; see Section 2.8

13 SWD resistors zero ohm resistors; shorted for QN9022 device

debug

14 UART interface used as communication port for QN9022 device

15 PCB antenna onboard Bluetooth antenna

16 QN9022 chip QN9022 chip

17 QN9022 reset button used for QN9022 hardware reset

18 CR2032 battery holder CR2032 battery holder

19 piezo buzzer buzzer: KLJ-1230

20 jumper used for power cycle ATSAM3U2CA

21 External flash Used for storing application firmware

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2.2 Default jumper settings on mini DK board

The jumpers on QN9022 mini DK are factory set to power the board over the USB. The

factory-set jumper and switch settings are shown in Table 2.

2.3 Power supply

The QN9022 board has two power supply modes:

1. Bus-power mode: The board can be powered using the USB cable. The onboard LDO

is used to regulate output voltage to 3 V and supplies power to all parts on the board.

2. Battery-power mode: The CR2032 supplies power to QN9022 and optional sensor

connector when it is in battery-power mode. The J-Link OB still uses the LDO as

power supply via USB cable. When using USB interface as a power supply, connect

the jumper J11 pin 2 and pin 3; see Figure 4.

When using a CR2032 coin cell as a power supply, connect the jumper J11 pin 1 and

pin 2; see Figure 5.

Table 2. QN9022 mini DK board components list

Jumper Pins to be shorted using

jumpers

Function

J11 2 and 3 USB powered

J12 1 and 2 VCC_QN9022 3.3 V

J13 1 and 2 VCC_MB 3.3 V

Fig 4. Connecting jumper J11 pin 2 and pin 3 to select USB as power supply

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2.4 SEGGER J-Link OB part

The SEGGER J-Link OB offers the SWD and UART interface. Users can download or

update firmware into a QN9022 device by using the UART or SWD interface.

Furthermore, it is convenient to debug the program for a QN9022 device using SWD

interface.

To program or debug the QN9022 device using the SEGGER J-Link OB, the 0 resistors

R37, R38 should be soldered; see Figure 6.

In order to use a USB to UART bridge for the QN9022 download, the solder bridge SB3,

SB4 should be shorted; see Figure 7.

Fig 5. Connecting jumper J11 Pin1 and Pin 2 to select CR2032 coin cell as power supply

Fig 6. Connect R37, R38

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2.5 QN9022 device

The QN9022 device is integrated with a BLE radio, controller, protocol stack and profile

software, and a high performance MCU on a single chip; see Figure 8.

Fig 7. Short R35, R36

Fig 8. The QN9022 device

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2.6 GPIO interface

In QN9022 mini development board version V1, the connectors J6 and J7 provide GPIO

connection. The net name is shown in Figure 9.

2.7 QN9022 reset button

The reset button is used to provide hardware reset to the QN9022 device. When

programming the QN9022 using UART interface of SEGGER J-Link OB, the reset button

should be pressed first to ensure that QN9022 is in boot mode. See Figure 10 for the

detailed circuit.

2.8 LED

The QN9022 board offers two programmable LEDs, which are connected to the QN9022

device GPIO.

Fig 9. QN9022 MiniDK version V1 GPIO connections

Fig 10. QN9022 reset

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LED1 and LED2 are connected to GPIO P0.3 and P1.6 respectively. The connections are

shown in Figure 11. 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 Figure 12

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

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