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Overview

boards/renesas/fpb_rx140/doc/index.rst

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.. zephyr:board:: fpb_rx140

Overview

The Fast Prototyping Board for RX140 MCU Group comes equipped with an RX140 MCU (R5F51406BGFN). The board is inexpensive for RX140 evaluation and prototype development of various applications. It has an emulator circuit so you can write/debug programs just by connecting it to a PC with a USB cable. In addition, it has high expandability with Arduino Uno and two Pmod™ connectors as standard, and through-hole access to all pins of the microcontroller.

MCU Native Pin Access

  • R5F51406ADFN MCU

    • Max 48MHz, 32-bit RXv2 core (RXv2)
    • 256 KB Flash, 64 KB RAM
    • 80-pin, LFQFP package

  • Native pin access through 2 x 40-pin male headers (not fitted)

  • RX MCU current measurement point for precision current consumption measurement

  • RX MCU on-chip oscillators as main clock

  • Providing 32.768 kHz crystal oscillator as sub clock

System Control and Ecosystem Access

  • Two 5 V input sources

    • USB
    • External power supply (using 2-pin header [not fitted])

  • On-board debugger / programmer (E2 emulator On Board (referred as E2OB, FINE Interface))

  • User LEDs and switches

    • Two User LEDs (green)
    • Power LED (green) indicating availability of regulated power
    • Debug LED (yellow) indicating the debug connection
    • One User switch
    • One Reset switch

  • Two popular ecosystem expansions

    • Two Digilent PmodTM
    • Arduino® (Uno R3) connector

Hardware

Detailed hardware features can be found at:

  • RX140 MCU: RX140 Group User's Manual Hardware_
  • FPB-RX140: FPB_RX140 - User's Manual_

Supported Features

.. zephyr:board-supported-hw::

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the fpb_rx140 board can be built, flashed, and debugged using standard Zephyr workflows. Refer to :ref:build_an_application and :ref:application_run for more details.

Flashing

The program can be flashed to FPB-RX140 using the E2OB by connecting the board to the host PC and open Jumper J4. Here’s an example for building and flashing the :zephyr:code-sample:hello_world application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: fpb_rx140 :goals: build flash

Debugging

You can use Renesas Debug extension_ on Visual Studio Code for a visual debug interface. The configuration for launch.json is as below.

.. code-block:: json

{ "version": "0.2.0", "configurations": [ { "type": "renesas-hardware", "request": "launch", "name": "RX140 Renesas Debugging E2lite", "target": { "deviceFamily": "RX", "device": "R5F51406", "debuggerType": "E2LITE" "serverParameters": [ "-uUseFine=", "1", "-w=", "0", ], } } ] }

References

  • FPB_RX140 Website_
  • RX140 MCU group Website_

.. _FPB_RX140 Website: https://www.renesas.com/en/design-resources/boards-kits/fpb-rx140

.. _RX140 MCU group Website: https://www.renesas.com/en/products/rx140

.. _FPB_RX140 - User's Manual: https://www.renesas.com/en/document/mat/fpb-rx140-v1-users-manual

.. _RX140 Group User's Manual Hardware: https://www.renesas.com/en/document/mah/rx140-group-users-manual-hardware-rev120

.. _Renesas Debug extension: https://marketplace.visualstudio.com/items?itemName=RenesasElectronicsCorporation.renesas-debug