Overview
Description
The RX64M Group 32-bit microcontrollers are capable of operating at up to 120 MHz, providing a leading edge performance of 5.06 CoreMark/MHz. The RX64M employs the powerfully evolved RXv2 core, which is backward compatible with the RX core employed in existing RX products.The RXv2 core enables 1.48 times the CoreMark/MHz performance and a 40% reduction in power consumption compared to existing RX products, and even higher code efficiency, allowing the realization of high-speed, low consumption systems. The RX64M Group is equipped with large-capacity memory of up to 4 MB of ROM for code and 552 KB work RAM. Built-in functions include the well-received event link controller from the RX200 and abundant functions from the RX63N, as well as SD card and audio interfaces, which are highly demanded by the market, and IEEE 1588 industrial Ethernet functions have been added. Thus, the RX64M Group is suitable for industrial equipment, network devices, and other applications requiring advanced real-time performance and large-capacity memory. We are also preparing a variety of middleware to support short system development times at low cost.
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Support
Support Communities
Support Communities
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RX64M CAN FIT module
I might be wrong but there is an else-block missing in function R_CAN_RxRead() of file r_can_rx.c line 1098: A STD frame ID will not be copied when in mixed mode.
Apr 19, 2016 -
RX64M: Timeout for RTC
Hi, the FIT module for the RTC is potentially (and practically) looping endlessly. This behaviour is undesired in my application. I want to timeout the loops (and stop the RTC in an error case) but I don't know the maximal time which should be allowed for the individual RTC ...
Jun 24, 2018 -
LWIP porting on RX64M starter kit
Hi All, Is there any LWIP example code for RX64M starter kit?? Regards, Mayur
Jun 6, 2022
FAQs
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Settings for Using Ethernet1 (Renesas Starter Kit for RX64M)
... Placement of components on the board is shown in ‘3.3 Component Placement’ in the `Renesas Starter Kit for RX64M User’s Manual’.https://www.renesas.com/products/microcontrollers-microprocessors/rx-32-bit-performance-efficiency-mcus/rx64m-starter-kit-plus-renesas-starter-kit-rx64m
Apr 21, 2020 -
Use of R470 Installed in Renesas Starter Kit+ for RX64M
Resistor R470 is a bleeder resistor. When the SD card is inserted, electrical charge in a capacitor might flow in, causing power-on requirements to not be met. The resistor is there to avoid this phenomenon (although installation of such a resistor is not stipulated in the SD standards).
Apr 21, 2020 -
MCU Functionality Problems at Higher Frequencies
Please check the following items: 1) Make sure that both the operating frequency and operating voltage are set within the allowable range. 2) Depending on the MCU, you must change the access cycles of the operational power control state, code flash, RAM, etc. To change the access cycles, check the ...
Jun 8, 2017