Nordic nRF52 Preview DK

Nordic has released a nRF52840 Preview Development Kit (PDK) to support their new nRF52840 chip. Unlike the Thingy:52 and nRF52 DK, the Preview DK supports the new long-range LE Coded PHY, making it fully Bluetooth 5 capable. The Preview DK also supports 802.15.4 for the Thread communication protocol.

This kit is similar to the nRF52 DK design. All I/O and interfaces are brought out ot edge connectors. The Preview DK is compatible with Arduino shields for easy prototyping options.

The Preview DK sports 4 user programmable buttons, 4 user programmable LEDs, and on-board QSPI flash for external storage. The board utilizes a PCB antenna and comes with an NFC for utilizing the onboard NFC tag support. Since the nRF52840 has an onboard USB controller, a micro-USB port is supplied for prototyping with USB accessories.

If you're interested in profiling RF performance, you can utilize the RF SMA connector to make direct RF measurements. There are also dedicated power management pins that can be utilized for power profiling.

The Preview DK is supported by the standard Nordic SDK. It is also compatible with ARM mbed.

More on the nRF52840 Preview DK:

About the nRF52840

The nRF52840 is the king of the Bluetooth 5 chips and the only chip in the product line that supports 802.15.4 and the new Bluetooth 5 LE Coded PHY. The nRF52840 provides an impressive 1MB of flash and 256kB of RAM.The chip sports additional peripherals, such as the ARM Cryptocell cryptographic co-processor and a USB 2.0 controller. With an improved output power of up to +8dBm, the nRF52840 is definitely the chip to pick if you're looking at long-range Bluetooth communications.

nRF52840 Specifications:

  • 32-bit ARM Cortex-M4F 64MHz Processor
  • 1.7v to 5.5v operation
  • 1MB flash + 256kB RAM
  • Up to +8dBm output power
  • 802.15.4 radio support (ZigBee and Thread)
  • On-chip NFC
  • PPI –Programmable Peripheral Interconnect
  • 48 x GPIO
  • 1 x QSPI
  • 4 x Master/Slave SPI
  • 2 x Two-wire interface (I²C)
  • I²S interface
  • 2 x UART
  • 4 x PWM
  • USB 2.0 controller
  • ARM TrustZone CryptoCell-310 Cryptographic and security module
  • AES 128-bit ECB/CCM/AAR hardware accelerator
  • Digital microphone interface (PDM)
  • Quadrature decoder
  • 12-bit ADC
  • Low power comparator
  • On-chip balun

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