RoyalBlue54L Feather

An ARM + RISC-V Feather board with the new nRF54L15, built-in debugger, and smart PMIC

Overview

The RoyalBlue54L--familiar Feather formfactor with distinctive features. Nordic's next-gen nRF54L15, an onboard CMSIS-DAP debugger + UART bridge, and smart power-management features from the nPM1300 enable rapid development for your next Bluetooth 6.0, Thread, Matter, Zigbee, Amazon Sidewalk, or proprietary wireless project.

Crowd Supply project link: https://www.crowdsupply.com/lords-boards/royalblue54l-feather

Hardware Features

• Dual-core processing power:
  • ARM Cortex-M33 at 128MHz
  • RISC-V co-processor at 128MHz
• Comprehensive memory configuration:
  • 1.5MB of non-volatile memory (NVM)
  • 256KB of RAM
  • 2MB external flash
• Advanced wireless capabilities:
  • BLE 6.0 support with channel sounding for distance estimation
  • 4Mbps PHY for proprietary wireless protocols
  • 30-50% power reduction compared to nRF52 series
• Integrated development tools:
  • CMSIS-DAP debugger (nRF52833-based)
  • USB-to-UART bridge
  • Open source, Zephyr RTOS-based firmware
• Smart power management:
  • USB-C charging up to 800mA with nPM1300
  • High-accuracy battery fuel gauge
• Connectivity:
  • JST-PH connector
  • STEMMA-QT/Qwiic port
  • NFC antenna connector
• User interfaces:
  • User LED
  • RGB LED (nPM1300-driven)
  • User button
  • Reset button

Project Contents

This project contains the hardware design files for the RoyalBlue54L Feather. The board is designed with KiCAD and includes:

• Schematic files
• PCB layout
• Bill of Materials (BOM)
• Documentation

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