nRF52805System-on-Chip

Bluetooth 5.3 SoC in a WLCSP optimized for small two-layer PCB designs

The nRF52805 System-on-Chip (SoC) augments the industry-leading nRF52 Series with an SoC in a WLCSP optimized for small two-layer PCB designs, ideal for cost-constrained applications. It is the perfect choice for applications such as beacons, disposable medical devices, sensors, styluses and presenters.

The nRF52805 features an Arm® Cortex®-M4 processor, clocked at 64 MHz. It has 192 KB Flash and 24 KB RAM and integrates a range of analog and digital interfaces such as a 2-channel 12-bit ADC, SPI, UART, TWI and QDEC.

The nRF52805 is a Bluetooth 5.3 SoC supporting Bluetooth Low Energy and 2.4 GHz proprietary protocols. It is capable of Bluetooth high-throughput 2 Mbps, transferring data faster and more efficient, and Bluetooth channel selection algorithm #2 (CSA #2), improving coexistence and reducing interference. It also supports 2.4 GHz proprietary protocols. The radio has up to 4 dBm TX power and -97 dBm sensitivity (1 Mbps Bluetooth LE).

The nRF52805 is available in our smallest package, a 2.48x2.46 mm WLCSP, optimized for two-layer PCB designs. This enables designs that are small and low cost, attributes that are typically a design trade-off, since small designs typically require four-layer PCBs, which have significantly higher cost. We provide a 9.5x8.8 mm reference layout with all ten GPIOs available, requiring only 10 external passive components (inc. two crystal load capacitors).

The nRF52 DK is the recommended development kit, it emulates the nRF52805, and can be used as a starting point for development before moving over to a custom board.

Download PDFDownload nRF52805 SoC product brief [PDF]

Key features
  • 64 MHz Cortex-M4
  • 192 KB Flash, 24 KB RAM
  • 2.4 GHz transceiver
  • 2 Mbps, 1 Mbps
  • Bluetooth Low Energy
  • +4 dBm TX power
  • -97 dBm RX sensitivity
  • 128-bit AES
  • UART, SPI, TWI, QDEC
  • 12-bit ADC

Software development kit

nRF Connect SDK

nRF Connect SDK is a common software development kit for cellular IoT, Bluetooth Low Energy, Bluetooth mesh, Matter, Thread and Zigbee. It supports the nRF9160 SiP, the nRF5340 SoC and all nRF52 Series SoCs.