nRF52840
Advanced multiprotocol SoC with 1MB Flash, 256KB RAM, and USB support. The go-to chip for Bluetooth 5.4, Thread, Zigbee, and 802.15.4 applications.
prj.conf, CMakeLists.txt, Devicetree overlays) targeting this MCU.Advanced multiprotocol SoC with 1MB Flash, 256KB RAM, and USB support. The go-to chip for Bluetooth 5.4, Thread, Zigbee, and 802.15.4 applications.
Specifications
| Spec | Value |
|---|---|
| Flash | 1MB |
| Ram | 256KB |
| Core | ARM Cortex-M4F |
| MaxClock | 64 MHz |
| Gpio | 48 |
Wireless Protocols
ble, thread, zigbee, 802.15.4, ant, 2.4ghz-proprietary, usb
Hardware Features
arm-cortex-m4, fpu, nfc-a, usb-2.0, cryptocell-310, adc, pwm, spi, i2c, uart, qspi
Vendor
Nordic Semiconductor — SDKs: nRF Connect SDK, Zephyr RTOS
Recommended Use Cases
BLE Fitness Tracker
Wearable fitness device that tracks activity, heart rate, and sleep patterns over Bluetooth Low Energy, syncing data to a companion mobile app.
Environmental Monitor
Multi-sensor environmental monitoring station that measures temperature, humidity, air quality, and pressure, reporting data wirelessly to a central system.
Smart Home Hub
Central smart home controller that bridges multiple wireless protocols (BLE, Thread, Zigbee, WiFi) and enables unified device management and automation.
BLE Beacon
Bluetooth Low Energy beacon for indoor positioning, proximity marketing, and asset presence detection. Optimized for years of battery life on a coin cell.
Smart Lock
Bluetooth-enabled smart door lock with secure access control, supporting mobile app unlocking, guest access codes, and activity logging.
Predictive Maintenance Sensor
Vibration and temperature sensor for industrial equipment monitoring, detecting anomalies early to prevent costly downtime and failures.
Medical Wearable
Clinical-grade wearable device for continuous health monitoring including ECG, SpO2, and body temperature, with secure data transmission to healthcare systems.
Smart Lighting Controller
Networked lighting control system supporting dimming, color temperature, scenes, and schedules over BLE Mesh, Thread, or Zigbee for residential and commercial use.
Point of Sale Terminal
Compact payment terminal with secure element integration, NFC/contactless reader, display, and cellular/WiFi connectivity for mobile commerce.
Wireless Remote Control
Low-power wireless remote control with buttons, joysticks, or touch interface for controlling drones, toys, home entertainment, or industrial equipment.
Ready-Made Solutions
nRF52840 BLE Sensor
Build a Bluetooth Low Energy environmental sensor with the nRF52840 — measuring temperature, humidity, and air quality with multi-day battery life and mobile app connectivity.
nRF52840 Smart Lock
Build a secure BLE smart door lock with the nRF52840 — featuring encrypted pairing, NFC tap-to-unlock, guest access management, and tamper detection.
nRF52840 Mesh Lighting
Build a smart lighting mesh network with the nRF52840 — using BLE Mesh or Thread for reliable multi-node lighting control with dimming, scenes, and schedules.
nRF52840 Medical Wearable
Build a clinical-grade health monitoring wearable with the nRF52840 — continuous ECG, SpO2, and temperature monitoring with secure BLE data transmission.
nRF52832
Cost-effective Bluetooth 5.4 SoC with 512KB Flash and 64KB RAM, ideal for wearables, beacons, and low-power sensor applications.
nRF5340
Dual-core Bluetooth 5.4 SoC with dedicated application and network processors. 1MB Flash + 512KB RAM on the application core, with hardware security via ARM TrustZone.