nRF5340 DK

Board Overview

nRF5340 DK

Name:

nrf5340dk

Vendor:

Nordic Semiconductor

Architecture:

arm

SoC:

nrf5340

Browse board sources

Overview

The nRF5340 DK (PCA10095) is a single-board development kit for evaluation and development on the Nordic nRF5340 System-on-Chip (SoC).

The nRF5340 is a dual-core SoC based on the Arm® Cortex®-M33 architecture, with:

• a full-featured Arm Cortex-M33F core with DSP instructions, FPU, and Armv8-M Security Extension, running at up to 128 MHz, referred to as the application core

• a secondary Arm Cortex-M33 core, with a reduced feature set, running at a fixed 64 MHz, referred to as the network core.

The nrf5340dk/nrf5340/cpuapp build target provides support for the application core on the nRF5340 SoC. The nrf5340dk/nrf5340/cpunet build target provides support for the network core on the nRF5340 SoC.

nRF5340 SoC provides support for the following devices:

• ADC

• CLOCK

• FLASH

• GPIO

• IDAU

• I2C

• MPU

• NVIC

• PWM

• RADIO (Bluetooth Low Energy and 802.15.4)

• RTC

• Segger RTT (RTT Console)

• SPI

• UARTE

• USB

• WDT

More information about the board can be found at the nRF5340 DK website [2]. The nRF5340 DK Product Specification [3] contains the processor’s information and the datasheet.

Hardware

nRF5340 DK has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 32 MHz.

Supported Features

The nrf5340dk board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

nrf5340dk

/

nrf5340/cpuappnrf5340/cpuapp/nsnrf5340/cpunet

nrf5340dk@/nrf5340/cpuapp target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33F CPU1	arm,cortex-m33f
ADC	on-chip	Nordic Semiconductor nRF family SAADC node1	nordic,nrf-saadc
	on-board	ADC channels exposed on Arduino Uno (R3) headers1	arduino,uno-adc
ARM architecture	on-chip	Nordic UICR (User Information Configuration Registers)1	nordic,nrf-uicr
	on-chip	Nordic nRF family DCNF (Domain Configuration)1	nordic,nrf-dcnf
	on-chip	Nordic nRF family RESET (Reset Control)1	nordic,nrf-reset
	on-chip	Nordic nRF family CTRL-AP (Control Access Port)1	nordic,nrf-ctrlapperi
	on-chip	Nordic EGU (Event Generator Unit)6	nordic,nrf-egu
	on-chip	Nordic nRF family MUTEX (Mutual Exclusive Peripheral)1	nordic,nrf-mutex
	on-chip	Nordic KMU (Key Management Unit)1	nordic,nrf-kmu
	on-chip	Nordic SPU (System Protection Unit)1	nordic,nrf-spu
Audio	on-chip	Nordic PDM (Pulse Density Modulation interface)1	nordic,nrf-pdm
Clock control	on-chip	Nordic nRF53X OSCILLATORS (Oscillator Control)1	nordic,nrf53-oscillators
	on-chip	Nordic nRF low-frequency crystal oscillator (nRF53 series)1	nordic,nrf53-lfxo
	on-chip	Nordic nRF high-frequency crystal oscillator (nRF53 series)1	nordic,nrf53-hfxo
	on-chip	Nordic nRF clock control node1	nordic,nrf-clock
Comparator	on-chip	Nordic nRF COMP (analog COMParator)1	nordic,nrf-comp
Counter	on-chip	Nordic nRF timer node3	nordic,nrf-timer
Cryptographic accelerator	on-chip	ARM TrustZone CryptoCell 3121	arm,cryptocell-312
Debug	on-chip	ARMv8 instrumentation trace macrocell1	arm,armv8m-itm
Flash controller	on-chip	Properties defining the interface for the Nordic QSPI peripheral1	nordic,nrf-qspi
	on-chip	Nordic NVMC (Non-Volatile Memory Controller)1	nordic,nrf53-flash-controller
GPIO & Headers	on-chip	NRF5 GPIO2	nordic,nrf-gpio
	on-chip	NRF5 GPIOTE1 1	nordic,nrf-gpiote
	on-board	GPIO pins exposed on Arduino Uno (R3) headers1	arduino-header-r3
	on-board	This is an abstract device responsible for forwarding pins between cores1	nordic,nrf-gpio-forwarder
I2C	on-chip	Nordic nRF family TWIM (TWI master with EasyDMA)1 3	nordic,nrf-twim
I2S	on-chip	Nordic I2S (Inter-IC sound interface)1	nordic,nrf-i2s
IEEE 802.15.4	on-chip	Nordic nRF IEEE 802.15.4 node1	nordic,nrf-ieee802154
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
	on-board	Group of PWM-controlled LEDs1	pwm-leds
Mailbox	on-chip	Nordic nRF family IPC (MBOX Interprocessor Communication)1	nordic,mbox-nrf-ipc
Miscellaneous	on-chip	Nordic FICR (Factory Information Configuration Registers)1	nordic,nrf-ficr
	on-chip	Nordic DPPIC (Distributed Programmable Peripheral Interconnect Controller)1	nordic,nrf-dppic
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-board	QSPI NOR flash supporting the JEDEC CFI interface1	nordic,qspi-nor
	on-chip	Flash node1	soc-nv-flash
	on-chip	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Networking	on-chip	Nordic nRF family NFCT (Near Field Communication Tag)1	nordic,nrf-nfct
Pin control	on-chip	The nRF pin controller is a singleton node responsible for controlling pin function selection and pin properties1	nordic,nrf-pinctrl
Power management	on-chip	Nordic nRF power control node1	nordic,nrf-power
	on-chip	Nordic nRF family USBREG (USB Regulator Control)1	nordic,nrf-usbreg
	on-chip	Nordic VMC (Volatile Memory Controller)1	nordic,nrf-vmc
PWM	on-chip	nRF PWM1 3	nordic,nrf-pwm
	on-chip	nRFx S/W PWM1	nordic,nrf-sw-pwm
Regulator	on-chip	Nordic REGULATORS (voltage regulators control module) on nRF53X1	nordic,nrf53x-regulators
	on-chip	Nordic nRF5X regulator (fixed stage of the core supply)2	nordic,nrf5x-regulator
	on-chip	Nordic nRF53X regulator (high voltage stage of the main supply)1	nordic,nrf53x-regulator-hv
Retained memory	on-chip	Nordic GPREGRET (General Purpose Register Retention) device2	nordic,nrf-gpregret
RTC	on-chip	Nordic nRF RTC (Real-Time Counter)2	nordic,nrf-rtc
Sensors	on-chip	Nordic nRF quadrature decoder (QDEC) node2	nordic,nrf-qdec
Serial controller	on-chip	Nordic nRF family UARTE (UART with EasyDMA)1 3	nordic,nrf-uarte
SPI	on-chip	Nordic nRF family SPIM (SPI master with EasyDMA)1 4	nordic,nrf-spim
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
USB	on-chip	Nordic nRF52 USB device controller1	nordic,nrf-usbd
Watchdog	on-chip	Nordic nRF family WDT (Watchdog Timer)1 1	nordic,nrf-wdt

nrf5340dk@/nrf5340/cpuapp/ns target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33F CPU1	arm,cortex-m33f
ADC	on-chip	Nordic Semiconductor nRF family SAADC node1	nordic,nrf-saadc
	on-board	ADC channels exposed on Arduino Uno (R3) headers1	arduino,uno-adc
ARM architecture	on-chip	Nordic nRF family DCNF (Domain Configuration)1	nordic,nrf-dcnf
	on-chip	Nordic nRF family RESET (Reset Control)1	nordic,nrf-reset
	on-chip	Nordic nRF family CTRL-AP (Control Access Port)1	nordic,nrf-ctrlapperi
	on-chip	Nordic EGU (Event Generator Unit)6	nordic,nrf-egu
	on-chip	Nordic nRF family MUTEX (Mutual Exclusive Peripheral)1	nordic,nrf-mutex
	on-chip	Nordic KMU (Key Management Unit)1	nordic,nrf-kmu
Audio	on-chip	Nordic PDM (Pulse Density Modulation interface)1	nordic,nrf-pdm
Clock control	on-chip	Nordic nRF53X OSCILLATORS (Oscillator Control)1	nordic,nrf53-oscillators
	on-chip	Nordic nRF low-frequency crystal oscillator (nRF53 series)1	nordic,nrf53-lfxo
	on-chip	Nordic nRF high-frequency crystal oscillator (nRF53 series)1	nordic,nrf53-hfxo
	on-chip	Nordic nRF clock control node1	nordic,nrf-clock
Comparator	on-chip	Nordic nRF COMP (analog COMParator)1	nordic,nrf-comp
Counter	on-chip	Nordic nRF timer node3	nordic,nrf-timer
Flash controller	on-chip	Properties defining the interface for the Nordic QSPI peripheral1	nordic,nrf-qspi
	on-chip	Nordic NVMC (Non-Volatile Memory Controller)1	nordic,nrf53-flash-controller
GPIO & Headers	on-chip	NRF5 GPIO2	nordic,nrf-gpio
	on-chip	NRF5 GPIOTE1	nordic,nrf-gpiote
	on-board	GPIO pins exposed on Arduino Uno (R3) headers1	arduino-header-r3
	on-board	This is an abstract device responsible for forwarding pins between cores1	nordic,nrf-gpio-forwarder
I2C	on-chip	Nordic nRF family TWIM (TWI master with EasyDMA)1 3	nordic,nrf-twim
I2S	on-chip	Nordic I2S (Inter-IC sound interface)1	nordic,nrf-i2s
IEEE 802.15.4	on-chip	Nordic nRF IEEE 802.15.4 node1	nordic,nrf-ieee802154
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
	on-board	Group of PWM-controlled LEDs1	pwm-leds
Mailbox	on-chip	Nordic nRF family IPC (MBOX Interprocessor Communication)1	nordic,mbox-nrf-ipc
Miscellaneous	on-chip	Nordic DPPIC (Distributed Programmable Peripheral Interconnect Controller)1	nordic,nrf-dppic
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-board	QSPI NOR flash supporting the JEDEC CFI interface1	nordic,qspi-nor
	on-chip	Flash node1	soc-nv-flash
	on-chip	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Networking	on-chip	Nordic nRF family NFCT (Near Field Communication Tag)1	nordic,nrf-nfct
Pin control	on-chip	The nRF pin controller is a singleton node responsible for controlling pin function selection and pin properties1	nordic,nrf-pinctrl
Power management	on-chip	Nordic nRF power control node1	nordic,nrf-power
	on-chip	Nordic nRF family USBREG (USB Regulator Control)1	nordic,nrf-usbreg
	on-chip	Nordic VMC (Volatile Memory Controller)1	nordic,nrf-vmc
PWM	on-chip	nRF PWM1 3	nordic,nrf-pwm
	on-chip	nRFx S/W PWM1	nordic,nrf-sw-pwm
Regulator	on-chip	Nordic REGULATORS (voltage regulators control module) on nRF53X1	nordic,nrf53x-regulators
	on-chip	Nordic nRF5X regulator (fixed stage of the core supply)2	nordic,nrf5x-regulator
	on-chip	Nordic nRF53X regulator (high voltage stage of the main supply)1	nordic,nrf53x-regulator-hv
Retained memory	on-chip	Nordic GPREGRET (General Purpose Register Retention) device2	nordic,nrf-gpregret
RTC	on-chip	Nordic nRF RTC (Real-Time Counter)2	nordic,nrf-rtc
Sensors	on-chip	Nordic nRF quadrature decoder (QDEC) node2	nordic,nrf-qdec
Serial controller	on-chip	Nordic nRF family UARTE (UART with EasyDMA)1 3	nordic,nrf-uarte
SPI	on-chip	Nordic nRF family SPIM (SPI master with EasyDMA)1 4	nordic,nrf-spim
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
USB	on-chip	Nordic nRF52 USB device controller1	nordic,nrf-usbd
Watchdog	on-chip	Nordic nRF family WDT (Watchdog Timer)1 1	nordic,nrf-wdt

nrf5340dk@/nrf5340/cpunet target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	arm,cortex-m33
ARM architecture	on-chip	Nordic UICR (User Information Configuration Registers)1	nordic,nrf-uicr
	on-chip	Nordic EGU (Event Generator Unit)1	nordic,nrf-egu
	on-chip	Nordic nRF family SWI (Software Interrupt)4	nordic,nrf-swi
	on-chip	Nordic nRF family ACL (Access Control List)1	nordic,nrf-acl
Clock control	on-chip	Nordic nRF clock control node1	nordic,nrf-clock
Counter	on-chip	Nordic nRF timer node3	nordic,nrf-timer
Cryptographic accelerator	on-chip	Nordic ECB (AES electronic codebook mode encryption)1	nordic,nrf-ecb
	on-chip	Nordic nRF family CCM (AES CCM mode encryption)1	nordic,nrf-ccm
Flash controller	on-chip	Nordic NVMC (Non-Volatile Memory Controller)1	nordic,nrf53-flash-controller
GPIO & Headers	on-chip	NRF5 GPIOTE1	nordic,nrf-gpiote
	on-chip	NRF5 GPIO2	nordic,nrf-gpio
	on-board	GPIO pins exposed on Arduino Uno (R3) headers1	arduino-header-r3
I2C	on-chip	Nordic nRF family TWIM (TWI master with EasyDMA)1	nordic,nrf-twim
IEEE 802.15.4	on-chip	Nordic nRF IEEE 802.15.4 node1	nordic,nrf-ieee802154
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
Mailbox	on-chip	Nordic nRF family IPC (MBOX Interprocessor Communication)1	nordic,mbox-nrf-ipc
Miscellaneous	on-chip	Nordic FICR (Factory Information Configuration Registers)1	nordic,nrf-ficr
	on-chip	Nordic DPPIC (Distributed Programmable Peripheral Interconnect Controller)1	nordic,nrf-dppic
MMU / MPU	on-chip	ARMv8-M MPU (Memory Protection Unit)1	arm,armv8m-mpu
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Networking	on-chip	Nordic nRF family RADIO peripheral1	nordic,nrf-radio
Pin control	on-chip	The nRF pin controller is a singleton node responsible for controlling pin function selection and pin properties1	nordic,nrf-pinctrl
Power management	on-chip	Nordic nRF power control node1	nordic,nrf-power
	on-chip	Nordic VMC (Volatile Memory Controller)1	nordic,nrf-vmc
PWM	on-chip	nRFx S/W PWM1	nordic,nrf-sw-pwm
Retained memory	on-chip	Nordic GPREGRET (General Purpose Register Retention) device2	nordic,nrf-gpregret
RNG	on-chip	Nordic nRF family RNG (Random Number Generator)1	nordic,nrf-rng
RTC	on-chip	Nordic nRF RTC (Real-Time Counter)2	nordic,nrf-rtc
Sensors	on-chip	Nordic nRF family TEMP node1	nordic,nrf-temp
Serial controller	on-chip	Nordic nRF family UARTE (UART with EasyDMA)1	nordic,nrf-uarte
SPI	on-chip	Nordic nRF family SPIM (SPI master with EasyDMA)1	nordic,nrf-spim
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
Watchdog	on-chip	Nordic nRF family WDT (Watchdog Timer)1	nordic,nrf-wdt

See nRF5340 DK Product Specification [3] for a complete list of nRF5340 DK board hardware features.

Connections and IOs

LED

• LED1 (green) = P0.28

• LED2 (green) = P0.29

• LED3 (green) = P0.30

• LED4 (green) = P0.31

Push buttons

• BUTTON1 = SW1 = P0.23

• BUTTON2 = SW2 = P0.24

• BUTTON3 = SW3 = P0.8

• BUTTON4 = SW4 = P0.9

• BOOT = SW5 = boot/reset

Security components

• Implementation Defined Attribution Unit (IDAU [1]) on the application core. The IDAU is implemented with the System Protection Unit and is used to define secure and non-secure memory maps. By default, all of the memory space (Flash, SRAM, and peripheral address space) is defined to be secure accessible only.

• Secure boot.

Programming and Debugging

The nrf5340dk board supports the runners and associated west commands listed below.

	flash	debug	rtt	attach	debugserver
jlink	✅	✅ (default)	✅	✅	✅
nrfjprog	✅
nrfutil	✅ (default)

nRF5340 application core supports the Armv8-M Security Extension. Applications built for the nrf5340dk/nrf5340/cpuapp board by default boot in the Secure state.

nRF5340 network core does not support the Armv8-M Security Extension. nRF5340 IDAU may configure bus accesses by the nRF5340 network core to have Secure attribute set; the latter allows to build and run Secure only applications on the nRF5340 SoC.

Building Secure/Non-Secure Zephyr applications with Arm® TrustZone®

Applications on the nRF5340 may contain a Secure and a Non-Secure firmware image for the application core. The Secure image can be built using either Zephyr or Trusted Firmware M [4] (TF-M). Non-Secure firmware images are always built using Zephyr. The two alternatives are described below.

Note

By default the Secure image for nRF5340 application core is built using TF-M.

Building the Secure firmware with TF-M

The process to build the Secure firmware image using TF-M and the Non-Secure firmware image using Zephyr requires the following steps:

1. Build the Non-Secure Zephyr application for the application core using -DBOARD=nrf5340dk/nrf5340/cpuapp/ns. To invoke the building of TF-M the Zephyr build system requires the Kconfig option BUILD_WITH_TFM to be enabled, which is done by default when building Zephyr as a Non-Secure application. The Zephyr build system will perform the following steps automatically:

   • Build the Non-Secure firmware image as a regular Zephyr application

   • Build a TF-M (secure) firmware image

   • Merge the output image binaries together

   • Optionally build a bootloader image (MCUboot)

Note

Depending on the TF-M configuration, an application DTS overlay may be required, to adjust the Non-Secure image Flash and SRAM starting address and sizes.

2. Build the application firmware for the network core using -DBOARD=nrf5340dk/nrf5340/cpunet.

Building the Secure firmware using Zephyr

The process to build the Secure and the Non-Secure firmware images using Zephyr requires the following steps:

1. Build the Secure Zephyr application for the application core using -DBOARD=nrf5340dk/nrf5340/cpuapp and CONFIG_TRUSTED_EXECUTION_SECURE=y and CONFIG_BUILD_WITH_TFM=n in the application project configuration file.

2. Build the Non-Secure Zephyr application for the application core using -DBOARD=nrf5340dk/nrf5340/cpuapp/ns.

3. Merge the two binaries together.

4. Build the application firmware for the network core using -DBOARD=nrf5340dk/nrf5340/cpunet.

When building a Secure/Non-Secure application for the nRF5340 application core, the Secure application will have to set the IDAU (SPU) configuration to allow Non-Secure access to all CPU resources utilized by the Non-Secure application firmware. SPU configuration shall take place before jumping to the Non-Secure application.

Building a Secure only application

Build the Zephyr app in the usual way (see Building an Application and Run an Application), using -DBOARD=nrf5340dk/nrf5340/cpuapp for the firmware running on the nRF5340 application core, and using -DBOARD=nrf5340dk/nrf5340/cpunet for the firmware running on the nRF5340 network core.

Flashing

Follow the instructions in the Nordic nRF5x Segger J-Link page to install and configure all the necessary software. Further information can be found in Flashing. Then you can build and flash applications as usual (Building an Application and Run an Application for more details).

Warning

The nRF5340 has a flash read-back protection feature. When flash read-back protection is active, you will need to recover the chip before reflashing. If you are flashing with west, run this command for more details on the related --recover option:

west flash -H -r nrfutil --skip-rebuild

Note

Flashing and debugging applications on the nRF5340 DK requires upgrading the nRF Command Line Tools to version 10.12.0. Further information on how to install the nRF Command Line Tools can be found in Flashing.

Here is an example for the Hello World application running on the nRF5340 application core.

First, run your favorite terminal program to listen for output.

$ minicom -D <tty_device> -b 115200

Replace <tty_device> with the port where the board nRF5340 DK can be found. For example, under Linux, /dev/ttyACM0.

Then build and flash the application in the usual way.

# From the root of the zephyr repository
west build -b nrf5340dk/nrf5340/cpuapp samples/hello_world
west flash

Debugging

Refer to the Nordic nRF5x Segger J-Link page to learn about debugging Nordic boards with a Segger IC.

Testing the LEDs and buttons in the nRF5340 DK

There are 2 samples that allow you to test that the buttons (switches) and LEDs on the board are working properly with Zephyr:

• Blinky

• Button

You can build and flash the examples to make sure Zephyr is running correctly on your board. The button and LED definitions can be found in boards/nordic/nrf5340dk/nrf5340_cpuapp_common.dtsi.

References

[1]

https://developer.arm.com/docs/100690/latest/attribution-units-sau-and-idau

[2]

https://www.nordicsemi.com/Software-and-tools/Development-Kits/nRF5340-DK

[3] (1,2)

https://docs.nordicsemi.com/bundle/ps_nrf5340/page/keyfeatures_html5.html

[4]

https://www.trustedfirmware.org/projects/tf-m/