NRF52840 Development Kit N RF52840 DK User Guide V1.2

• Contents
• Revision history
• Introduction
• Minimum requirements
• Kit content
  • 3.1 Hardware content
  • 3.2 Downloadable content
  • 3.3 Related documentation
• Getting started
• Nordic tools and downloads
• Start developing
• Interface MCU
  • 7.1 IF Boot/Reset button
  • 7.2 Virtual COM port
    • 7.2.1 Dynamic HWFC handling
  • 7.3 MSD
• Hardware description
  • 8.1 Hardware drawings
  • 8.2 Block diagram
  • 8.3 Power supply
    • 8.3.1 5 V power sources
    • 8.3.2 VDD power sources
    • 8.3.3 Interface MCU power
    • 8.3.4 nRF52840 power source
    • 8.3.5 nRF52840 direct supply
  • 8.4 Operating modes
    • 8.4.1 USB detect
    • 8.4.2 nRF only mode
    • 8.4.3 Signal switches
  • 8.5 External memory
  • 8.6 Connector interface
    • 8.6.1 Mapping of analog pins
  • 8.7 Buttons and LEDs
  • 8.8 32.768 kHz crystal
  • 8.9 Measuring current
    • 8.9.1 Preparing the development kit board
    • 8.9.2 Using an oscilloscope for current profile measurement
    • 8.9.3 Using an ampere-meter for current measurement
  • 8.10 RF measurements
  • 8.11 Debug input and trace
  • 8.12 Debug output
  • 8.13 NFC antenna interface
  • 8.14 Extra op-amp
  • 8.15 Solder bridge configuration
• Glossary
  • Clear to Send (CTS)
  • Data Terminal Ready (DTR)
  • Development Kit (DK)
  • Hardware Flow Control (HWFC)
  • Integrated Development Environment (IDE)
  • Mass Storage Device (MSD)
  • Near Field Communication (NFC)
  • NFC-A Listen Mode
  • Operational Amplifier (op-amp)
  • Receive Data (RXD)
  • Request to Send (RTS)
  • Root Mean Square (RMS)
  • SubMiniature Version A (SMA) Connector
  • System on Chip (SoC)
  • Transmit Data (TXD)
• Acronyms and abbreviations
• Legal notices