nRF52840 fully supports multiple protocols, including BLE 5, Bluetooth mesh, thread, ZigBee, 802.15.4, ant, and 2.4GHz proprietary protocol stack.

nRF52840 SoC is built around a 32-bit arm ® cortex ™ - M4 CPU, with a 64 MHz floating-point unit, which has sufficient general processing capacity, floating-point operation, and DSP performance to meet the challenging wireless application requirements. It has NFC-a tags to simplify pairing and payment solutions. The arm TrustZone ® crypto cell encryption unit included on the chip provides a range of encryption options that are executed efficiently independent of the CPU.

nRF52840 SoC has many digital peripherals and interfaces, such as high-speed 32 MHz SPI and QSPI, for connecting external flash memory and display; PDM and I²S (for digital microphone and audio), full speed 12 Mbps USB device for data transmission and battery charging.

nRF52840 SoC device adopts a new radio architecture, with built-in PA, transmitting power up to + 8 DBM, built-in 1 MB flash and 256 KB ram, fully supporting BLE 5, 802.15.4 (including the thread), ant and private 2.4 GHz wireless technology, with a full speed USB 2.0 controller and a series of peripheral devices including a four-channel SPI interface. nRF52840 can also use more than 5V power supply, such as rechargeable battery power.

nRF52840 has two packages: 7 x 7 aqfn73 with 48 gpios and 3.5 x 3.6 wlcsp94 with 48 gpios.

In addition, nrf52840 also has an arm ® encryption accelerator built in to achieve peer-to-peer security based on Cortex-M SOC. Cryptocell provides a wide range of password and security functions, which are used to build entity security into applications from the beginning to the end. Compared with the CPU's equivalent operation in the software, crypto cell can also make related security operations run faster and use less processing time and power.

nRF52840 is an advanced and highly flexible single-chip solution, which is suitable for today's increasingly demanding ULP wireless applications, for our personal devices, living environment, and the Internet of things. It is designed to prepare for the major functional advances of ble 5 and to take advantage of the enhanced performance of ble 5, including remote and high performance. In today's applications, industrial-level security is essential.

A wide range of peripherals can utilize many high-performance digital interfaces, such as high-speed SPI (32 MHz) and four-level SPI (32 MHz), allowing direct interface to displays and external storage sources. Nrf52840 can supply voltage from 5.5V to 1.7V, allowing direct power supply from a rechargeable battery and USB power supply.

nRF52840 is ready to take advantage of the ble 5 technology to improve its performance. Most importantly, it supports a wider range (up to X4 compared with ble 4. X) and doubles the air data rate from 1Mbps in ble 4. X to 2Mbps.

nRF52840 is a certified component, so it is an ideal choice for home networking products using a thread grid stack. Wireless networks support the 802.15.4 physical layer and MAC layer and are suitable for other stacks of 802.15.4, such as ZigBee.

The multi-protocol modules with nRF52840 SoC, for example, RF-BM-ND05 and RF-BM-ND06 developed by RF-star can be applied to a wide range of applications. These nRF52840 modules with their outstanding performance have been used in wearable devices with wireless payment features, NFC payment, and customized applications.