Nordic nRF52840 Overview

Raytac Corporation 

Bluetooth module maker based on Nordic nRF51 & nRF52 solution 

(Nordic nRF51822 & nRF51422 & nRF52832 & nRF52840)
Bluetooth Specification Version: BT4.0 & BT4.1 & BT4.2

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Tel: +886.2.3234.0208

email: service@raytac.com

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Quoted from Nordic

https://www.nordicsemi.com/eng/Products/nRF52840

nRF52840

Advanced Multi-protocol SoC supporting Bluetooth 5 / ANT /802.15.4 / 2.4GHz Proprietary Acitve

The nRF52840 SoC is an advanced, highly flexible ultra-low power multiprotocol SoC ideally suited for ultra low-power wireless applications. The nRF52840 SoC is built around a 32-bit ARM® Cortex™-M4F CPU with 1MB flash and 256kB RAM on chip. The embedded 2.4GHz transceiver supports Bluetooth® low energy (Bluetooth 5), 802.15.4, ANT and proprietary 2.4GHz protocols. It is on air compatible with existing nRF52 Series, nRF51 Series, and nRF24 Series products from Nordic Semiconductor.

Bluetooth 5 The nRF52840 has hardware support on-chip for Bluetooth 5. This includes long range and high throughput capability. It supports all Bluetooth low energy physical layer bit rates and modulation schemes. Processing Power The nRF52840 incorporates a powerful Cortex-M4F processor running at 64 MHz enabling the most demanding applications with complex arithmetic requirements to be realized in a single chip solution. This CPU configuration supports DSP instructions, HW accelerated Floating Point Unit (FPU) calculations, single-cycle multiply and accumulate, and hardware divide for energy-efficient processing complex operations. Multiprotocol Radio The 2.4GHz radio supports multiple protocols including Bluetooth low energy, ANT, 802.15.4 and 2.4GHz proprietary. It supports Bluetooth low energy 2Mbs and 1Mbs and Bluetooth 5 long range (500kbs and 125kbs). The radio supports high resolution RSSI measurement and automated functions to reduce CPU load, including EasyDMA for direct memory access for packet data and assembly. Nordic provides protocol stacks for Bluetooth low energy. ANT protocol stacks are available from ANT. Memory to expand The nRF52840 has extensive on-chip memory in both flash (1MB) and RAM (256kB) offering powerful possibilities for today’s advanced wireless applications. Power Efficiency The nRF52840 SoC employs power and resource management to maximize application energy efficiency and battery life. The supply range between 1.7V and 5.5V supports primary and secondary cell battery technologies and direct USB supply without the need for external regulators. All peripherals have independent and automated clock and power management to ensure they are powered down when not required for task operation to keep power consumption to a minimum without the application having to implement and test complex power management schemes.The nRF52840 has a comprehensive system of automated and adaptive power management features. These features are built into all aspects of device operation from power supply switching, to peripheral bus/EasyDMA memory management, and automated shut down of all but the absolute essential peripherals required to perform a task. ARM® TrustZone® Cryptocell-310 ARM Cryptocell-310 is a powerful on-chip cryptographic co-processor providing cryptographic functions and services to speed up operations significantly, save CPU processing time and reduce energy consumption. It incorporates a true random number generator (TRNG) and support for a wide range of asymmetric, symmetric and hashing cryptographic services for secure applications. On-Chip NFC Tag NFC™-A tag support is included on chip. NFC Type 2 and Type 4 tag emulation protocol stacks are provided by Nordic opening up a range of new applications, like NFC payment, and improved user experience for existing BLE applications with Out-of-Band (OOB) pairing. OOB pairing using NFC simplifies the process of authenticated pairing between two Bluetooth devices by exchanging authentication information over an NFC link. USB 2.0 The nRF52840 has on-chip USB 2.0 (Full speed) support and on-chip VBUS regulation allowing for direct connection to USB hosts for data transfer and direct USB power for hosted applications. Package Options The nRF52840 is available in 7x7mm 73pin AQFN package with 48 available GPIO. SoftDevices The Nordic protocol stacks are known as SoftDevices. The nRF52840 is supported by the S140 SoftDevice. The S140 SoftDevice is a Bluetooth 5 pre-qualified Bluetooth low energy protocol stack. More information on the nRF52840 can be found on Nordic's Infocenter FEATURES Advanced Single chip 2.4 GHz multi-protocol SoC 32-bit ARM Cortex-M4F Processor 1.7v to 5.5v operation 1MB flash + 256kB RAM Bluetooth 5 support for long range and high throughput 802.15.4 radio support On-chip NFC PPI –Programmable Peripheral Interconnect Automated power management system with automatic power management of each peripheral Configurable I/O mapping for analog and digital I/O 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 50Ω balun On-air compatible with nRF52, nRF51 and nRF24 Series APPLICATIONS Advanced high performance wearables Wearables for secure payments Virtual Reality/Augmented Reality systems Smart Home sensor networks Smart city sensor networks High performance HID controllers Internet of Things (IoT) sensor networks Smart door locks Smart lighting networks Connected white goods