NRF52840-dat

nRF52840是一款高性能、低功耗的无线SoC芯片，由挪威Nordic Semiconductor公司推出。它支持多种无线协议，包括Bluetooth 5、Thread、Zigbee、ANT和2.4GHz。nRF52840芯片采用ARM Cortex-M4F处理器，主频为64MHz，内置1MB的闪存和256KB的RAM。它还具有多种外设，包括ADC、PWM、SPI、I2C、UART、USB和GPIO等。此外，nRF52840还支持多种安全功能，如AES加密、SHA-256哈希和True Random Number Generator（TRNG）等。

Feature nRF52805 nRF52810 nRF52811 nRF52820 nRF52832 nRF52833 nRF52840 nRF5340
Bluetooth 5.3 X X X X X X X X
Bluetooth 2 Mbps X X X X X X X X
Bluetooth Long Range X X x x x
Bluetooth Direction Finding X X X x
Bluetooth LE Audio X
Bluetooth mesh x x x x X
Thread X X x x X
Zigbee X x x X
Matter X X

nRF52840 Features

  • 32-bit ARM® Cortex®-M4F processor, 64 MHz
  • 1 MB Flash, 256 KB RAM
  • Bluetooth 5, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT, proprietary 2.4 GHz
  • USB 2.0 full-speed (12 Mbps) device
  • NFC-A tag support
  • 48 programmable GPIOs
  • SPI, I2C, UART, PWM, PDM, I2S, QSPI, and more
  • 12-bit ADC, comparator, temperature sensor
  • Crypto: AES, ECB, CCM, AAR, RNG, SHA-256
  • On-chip DC-DC and LDO regulators
  • Supply voltage: 1.7 V to 3.6 V
  • Operating temperature: -40°C to +85°C
  • Package: QFN73, 7x7 mm
  • Arm TrustZone CryptoCell-310 security
  • Flexible power management and low power consumption
  • Direct Memory Access (DMA)
  • Programmable Peripheral Interconnect (PPI)
  • EasyDMA for peripherals
  • 8/9/10/11/12-bit ADC, 200 ksps
  • 4x 32-bit timers, RTC, watchdog, and more

The nRF52840 is quite generous with its I/O compared to many other Bluetooth SoCs. It features a total of 48 GPIO pins.

These pins are organized into two separate "ports":

  • Port 0 (P0): Consists of 32 pins (P0.00 to P0.31).
  • Port 1 (P1): Consists of 16 pins (P1.00 to P1.15).

SDK

drive

Pin Definitions

NRF52840 Pinout Table

Pin Name Default Func Alt Func Notes
P0.00 GPIO *XL1, ADC, NFC
P0.01 GPIO *XL2, ADC, NFC
P0.02 GPIO ADC, NFC
P0.03 GPIO ADC, NFC
P0.04 GPIO ADC, NFC
P0.05 GPIO ADC, NFC
P0.06 GPIO ADC, NFC
P0.07 GPIO ADC, NFC
P0.08 GPIO
P0.09 GPIO NFC1 NFC antenna option
P0.10 GPIO NFC2 NFC antenna option
P0.11 GPIO
P0.12 GPIO
P0.13 GPIO
P0.14 GPIO
P0.15 GPIO
P0.16 GPIO
P0.17 GPIO
P0.18 RESET GPIO REST pin
P0.19 GPIO
P0.20 GPIO
P0.21 GPIO
P0.22 GPIO
P0.23 GPIO
P0.24 GPIO
P0.25 GPIO
P0.26 GPIO
P0.27 GPIO
P0.28 GPIO ADC
P0.29 GPIO ADC
P0.30 GPIO ADC
P0.31 GPIO ADC
P1.00 GPIO
P1.01 GPIO
P1.02 GPIO
P1.03 GPIO
P1.04 GPIO
P1.05 GPIO
P1.06 GPIO
P1.07 GPIO
P1.08 GPIO
P1.09 GPIO
P1.10 GPIO Button
P1.11 GPIO
P1.12 GPIO
P1.13 GPIO
P1.14 GPIO
P1.15 GPIO

The nRF52840 has two TWI (Two-Wire Interface/I2C) master instances: TWIM0 and TWIM1. You can configure them to use any pins through the Pin Selection Registers (PSEL). - I2C-dat

If you are using a development board, the software libraries (like Arduino or Zephyr) usually default to these:

nRF52840 Development Kit (PCA10056):

  • SDA: P0.26
  • SCL: P0.27

Adafruit Feather nRF52840:

  • SDA: P0.25 (Physical Pin 25)
  • SCL: P0.26 (Physical Pin 26)

external QSPI flash

  • flash-dat

  • QSPI DATA0 -- PO.17

  • QSPI SCK -- P0.19
  • QSPI DATA3 -- PO.21
  • QSPI CS -- PO.20
  • QSPI DATA2 -- P0.23
  • QSPI DATA1 -- PO.22

peripherals - peripherals-dat

  • Switch P1.02 BUTTON

  • Reset P0.18 BUTTON

  • LED1 P1.15

  • LED2 P1.10

  • WS2812 P0.16

  • VDIV P0.29

  • SCK P0.14

  • MOSI P0.13

  • MISO P0.15

  • SWO P1.00

  • RXD P0.24

  • TXD P0.25

  • P0.09 NF1

  • P0.10 NF2

  • P0.11 SCL

  • P0.12 SDA
  • P0.09 NFC / P0.10 NFC

solutions and apps

NRF52840 SCH

SCH1

  • button == P1.10

  • REST == P0.18/RESET

  • I2C == P0.26 / P0.27

  • BAT_ADC == P0.04
  • SPI == P1.12 ~ P1.15

SCH2 Module

SCH3 module

ref

Table of Contents

https://www.electrodragon.com