Based on the design of the Arm cor-M33 dual-core processor, the nRF5340 integrates high-performance application processors, programmable ultra-low power network processors, and security functions into a low-power multi-protocol SoC. At the same time, the chip also enhances dynamic multi-protocol support, and supports Bluetooth 5.1, low-power Bluetooth, Bluetooth Mesh, Thread, and Zigbee protocols. It can be configured or debugged by smart phones using low-power bluetooth, and interact with Mesh networks. The wireless transmitter is equipped with all Bluetooth 5.1 direction finding functions. The nRF5340 operates in a power supply voltage range of 1.7 to 5.5V, allowing rechargeable batteries and USB power.

nRF5340 integrates a new power-optimized multi-protocol 2.4ghz radio with a transmitting current of 3.2ma (0dbm transmitting power, 3V, DC/DC) and a receiving current of 2.6ma (3V, DC/DC). The sleep current was as low as 1.1 A.

The nRF5340 launched this time, the main processor Application processor is responsible for the calculation of complex functions and bluetooth protocol stack. It adopts the Arm architecture -m33 under the Arm architecture that has always been used by Nordic, and mounts DSP and floating point functions at the same time, which can be used for third-party development and Application. The kernel runs at up to 128 MHz, supports voltage and frequency regulation, and contains dedicated 1 MB of flash memory and 512 KB of RAM memory, which can meet the needs of the next generation of cutting-edge wearable devices and significantly improve performance over the previous generation of nRF52840.

The sub-core Network processor can be used as the computation of additional and uncomplicated content, which also USES Arm corcor-m33, the kernel runs at 64 MHz (238 CoreMark), and is dedicated to 256 KB flash and 64 KB memory. The low power consumption and low duty cycle sensor acquisition during radio operation are optimized. Provides optimal implementation of the 2.4 GHz private protocol and ensures portability from the nRF51 and nRF52 series.

The two processors can work independently of each other, connect directly through the IPC, or wake up to each other, but consider their respective protection Settings.

Además, el procesador de aplicaciones también integra funciones de seguridad como el almacenamiento de claves de seguridad Arm cryptocell-312, lo que brinda el más alto nivel de seguridad. Funciona mediante hardware que acelera los estándares comunes de cifrado de Internet al tiempo que proporciona aislamiento de hardware en todo el sistema para software confiable mediante la creación de áreas de ejecución de código seguras y no seguras en un solo kernel. Al mismo tiempo, las características de seguridad integradas del chip admiten actualizaciones de firmware que pueden proteger el chip de ataques maliciosos.

Cabe mencionar que nRF5340 integra capacitores de carga XTAL para cristales de 32 MHz y 32.762 kHz. En comparación con la serie nRF52 de Nordic, la cantidad de componentes externos necesarios se reduce en 4, lo que reduce la lista de materiales y el tamaño de la solución.

Se informa que las muestras de ingeniería SoC nRF5340 del paquete aQFN de 7x7 mm con 48 puertos GPIO pronto se industrializarán.

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