The Renesas RX65N and RX651 are mainstream RX microcontrollers with RXv2 core, large-capacity RAM, and enhanced security, connectivity and human machine interface (HMI) capabilities.


RX65N and RX651 Group 32-bit general microcontrollers are optimal for IoT devices with enhanced security, connectivity, and HMI. RX65N and RX651 Group microcontrollers have built-in large-capacity flash and RAM and a wide package lineup, and can be used to control a variety of applications.

Key Features

  • RXv2 Core 120 MHz operation (34 CoreMark/mA)
  • 2.7 to 3.6 V operation
  • A wide package lineup : 64-pin (4.5mm x 4.5mm, BGA) to 176-pin
  • Equipped with various communication interfaces such as Ethernet,USB, CAN, SD host/slave interface, and quad SPI.
  • Program Flash up to 2 MB, SRAM up to 640 KB
    • DualBank function convenient for firmware update *1
  • HMI
    • TFT-LCD controller and 2D drawing engine can reduce CPU load at running of LCD display.*1
  • Security
    • Equipped with memory protect functions that protect Flash memory from unintended access to flash
    • Equipped with a trusted secure IP that protects key data from disclosure *1
    • Equipped with various encryption engines : AES, TRNG, TDES *1, RSA*1, SHA*1

*1 : Only products with 1.5 MB or more code flash memory

Pin Count/Memory Size Lineup

Program Flash
E2Data Flash


Looking for other products with excellent hardware and software compatibility? Please check out:

Evaluation Platforms, Reference Designs and Tools

LCD Display solution

Ideal if you want to add an HMI to your project or if you want to easily evaluate color LCD and 2D drawing performance

Evaluation kit: Envision Kit

・2D drawing engine driver: Download here >>

・Display adjustment tool: QE for Display

・GUI development tools

- emWin by Segger is free of charge

Security solution

Easily evaluate the encryption function that protects your important key information

You can find an explanation of orderable part numbers here.

Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.


Software Design Support

Title Description
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation. CS+ is also included with starter kits.
E2 emulator Lite This entry-level on-chip debugging emulator provides functionality equivalent to that of the E1 emulator at a low price.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the tuning of current drawn by systems under development.
E20 emulator This on-chip debugging emulator has enhanced debugging facilities such as large-capacity tracing and real-time RAM monitoring when used in combination with RX600 and RX700 MCUs (this emulator provides debugging functionality equivalent to that of the E1 emulator for other MCUs).
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).


Hardware Design Support

Title Description
IBIS/BSDL IBIS standard simulation data is required for high-speed board design and can be used to run simulations to examine and troubleshoot issues such as waveform reflection, ringing, and so on, before producing the actual board.
BSDL is a data input format supported by most IEEE 1149.1 (JTAG)-compliant tools. The automatic test pattern generation (ATPG) and automatic test equipment functions of these tools facilitate testing.
Resonator Information Please search for your resonator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.
For main clock resonators/For subclock resonators : 
KYOCERA: Click here for RX65N oscillation evaluation result. Click here for RX651 oscillation evaluation result.
Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter R5F565 into the IC Part Number search box.

You can filter the sample codes and application notes that are displayed using the below filters.

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