nRF52820System-on-Chip

Bluetooth 5.3 SoC with built-in USB supporting Bluetooth Low Energy, Bluetooth mesh, Thread and Zigbee

The nRF52820 is a System-on-Chip (SoC) offering USB and advanced wireless connectivity in a small package, for HID, smart home, commercial, and industrial applications.

The nRF52820 features an Arm Cortex-M4 processor, clocked at 64 MHz. It has 256 KB Flash and 32 KB RAM, and a range of analog and digital interfaces such as an analog comparator, UART, SPI, TWI, QDEC, and last but not least, USB. It can be supplied with a voltage from 1.7 to 5.5 V which enables powering the device from sources such as rechargeable batteries or via USB. The 2.4 GHz multiprotocol radio is fully featured and provides up to +8 dBm output power.

nRF52820 supports all Bluetooth Low Energy features, including Direction Finding, high-throughput 2 Mbps, Long Range, and all Bluetooth 5.3 features. It also supports Bluetooth mesh, Thread and Zigbee mesh protocols. 

The nRF52820's USB peripheral implements a Full Speed USB 2.0 device that offers a widely-used interface that enables low-latency and high-bandwidth communication with a range of hosts, such as PCs, tablets, smartphones, and gateways. It also adds the option of performing device firmware updates (DFU) over USB. When connected to a USB host, the nRF52820 can be directly powered by the always-present 5 V VBUS signal, and a reference layout for this configuration is provided under the Downloads tab.

The nRF52833 DK is the recommended development kit, it emulates the nRF52820, and can be used as a starting point for development before moving over to a custom board. 

Download PDFDownload nRF52820 SoC product brief [PDF]

Download PDFDownload nRF52820 SoC product brief Simplified Chinese [PDF]

Key features
  • 64 MHz Arm Cortex-M4
  • 256 KB Flash, 32 KB RAM
  • 2 Mbps, 1 Mbps, Long Range
  • Bluetooth Low Energy
  • Bluetooth Direction Finding
  • Bluetooth mesh
  • Thread, Zigbee
  • +8 dBm TX power
  • 128-bit AES
  • UART, SPI, TWI, QDEC
  • Full Speed USB 2.0
  • -40 to 105 °C extended temperature range
  • 1.7 to 5.5 V supply voltage

Comparison of our Bluetooth LE SoCs

SoC nRF5340 nRF52840 nRF52833 nRF52832 nRF52820 nRF52811 nRF52810 nRF52805
Bluetooth  5.3 5.3 5.3 5.3 5.3 5.3 5.3 5.3
Thread  Yes Yes Yes Yes Yes
Matter  Yes Yes
Zigbee  Yes Yes Yes Yes
Bluetooth Mesh  Yes Yes Yes Yes Yes
Flash   1 MB + 256 KB 1 MB 512 KB 512/256 KB 256 KB 192 KB 192 KB 192 KB
RAM   512 KB + 64 KB 256 KB 128 KB 64/32 KB 32 KB 24 KB 24 KB 24 KB
CPU   128 MHz Arm Cortex-M33 + 64 MHz Arm Cortex-M33 64 MHz Arm Cortex-M4 with FPU 64 MHz Arm Cortex-M4 with FPU 64 MHz Arm Cortex-M4 with FPU 64 MHz Arm Cortex-M4 64 MHz Arm Cortex-M4 64 MHz Arm Cortex-M4 64 MHz Arm Cortex-M4
High-Speed SPI   Yes Yes Yes
QSPI   Yes Yes
USB   Yes Yes Yes Yes
PWM, PDM, I2S   Yes Yes Yes Yes PWM, PDM PWM, PDM
ADC, Comp  Yes Yes Yes Yes COMP ADC, COMP ADC, COMP ADC
Temp Range -40 to 105 °C -40 to 85 °C -40 to 105 °C -40 to 85 °C -40 to 105 °C -40 to 85 °C -40 to 85 °C -40 to 85 °C
Supply voltage range   1.7 to 5.5 V 1.7 to 5.5 V 1.7 to 5.5 V 1.7 to 3.6 V 1.7 to 5.5 V 1.7 to 3.6 V 1.7 to 3.6 V 1.7 to 3.6 V
Packages   aQFN94

WLCSP95
aQFN73

WLCSP94
aQFN73

QFN40

WLCSP76
QFN48

WLCSP50
QFN40 QFN48

QFN32

WLCSP33
QFN48

QFN32

WLCSP33
WLCSP28
GPIOs   48 48 18-42 32 18 15-32 15-32 10