NRF52840 in nRF52 Family
The nRF52840 from Nordic Semiconductor is a high-performance, multi-protocol Bluetooth 5.3 SoC designed for complex IoT applications. It features an ARM Cortex-M4 with FPU, high-speed USB 2.0, and integrated 802.15.4 support for Thread and Zigbee. As the flagship of the nRF52 family, it is engineered to act as a single-chip solution for secure wireless connectivity, combining significant memory resources with advanced security features like ARM TrustZone CryptoCell-310 to meet demanding industrial and consumer requirements.
Variants in This Sub-Family
| Part Number | Difference | Stock |
|---|---|---|
| nRF52840-DK (Nordic Semiconductor) | K | 587 |
| nRF52840-QIAA-T (Nordic Semiconductor) | QIAA-T | 1,299 |
| nRF52840-CKAA-R7 (Nordic Semiconductor) | CKAA-R7 | 5,857 |
| nRF52840-CKAA-R (Nordic Semiconductor) | CKAA-R | 5,979 |
| NRF52840-QIAA-R7 (Nordic Semiconductor) | QIAA-R7 | — |
| nRF52840-QIAA-R (Nordic Semiconductor) | QIAA-R | — |
Variants within the nRF52840 line primarily differ by packaging and delivery format. The QIAA package utilizes an aQFN73 for standard PCB layouts, while the CKAA variant offers a much smaller WLCSP for space-constrained designs. Development kits like the nRF52840-DK provide full pin access and debugging, whereas the nRF52840-Dongle is a cost-optimized, hardware-restricted form factor specifically for USB-to-wireless bridge prototyping and sniffer applications.
