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RX65N, RX651

The New Mainstream of RX MCU with RXv2 Core, Large RAM, and Enhanced Connectivity: RX65N, RX651 Group


High Power Efficiency

RXv2 core with maximum operating frequency of 120MHz, realize high power efficiency of 34 CoreMark/mA, which enables maximizing battery life for endpoint devices etc. as well as high performance.


Extensive communication functions and encryption functions realize secure updating of device control

Large capacity 256 KB RAM realizes high-speed communication processing required for various communication I/Fs such as Ethernet, USB, CAN, SD host/slave interface, quad SPI etc. In addition, implemented AES and TRNG are for data encryption of device updating program via network as well as on-chip flash memory with protective function

to prevent programming by error, which enable secure program updating via network.


Reduce development time

RX65N, RX651 group are highly compatible among the same series both in functional scalability and pin assignments.

In addition, driver/middleware (FIT support) and sample code-generation tools (code generators) and evaluation boards (starter kits) to allow reuse of most of developed hardware/software resources, enabling seamless and scalable product development from small to large scale applications without effort in a short-time.


For more details on drives/middleware (FIT support), click here.

For more details on starter kits, click here.



Product Brochures

RX600/RX700 Brochure

Key Features:







120 MHz


2.7 to 3.6V


Program Flash

512KB, 768KB, 1MB


256 KB


DMAC x 8 channels, Data Transfer Controller, EXDMAC x 2 channels

External Bus

8/16-bit separate/multiplex, SDRAM


General Purpose Timer

Multi-Function Timer Pulse Unit (MTU3):
 16-bit x 8channels + 32-bit x 1 channel

Timer Pulse Unit (TPU): 16-bit x 6 channels

Timer (TMR): 8-bit x 4 channels

Compare Match Timer: 16-bit(CMT) x 4 channels + 32-bit(CMTW) x 2 channels

RTC with Battery Backup Function

1 channel

Indepedent Watchdog Timer /Watchdog Timer

1 channel / 1 channel

Communication Interface

Serial Communications Interface/Serial Communications Interface with FIFO

11 channels / 2 channels

I²C Bus Interface

2 channels

Serial Peripheral Interface

3 channels

Quad Serial Peripheral Interface

1 channel

Ethernet, EDMAC

1 channel


USB2.0 Full speed

1 channel (host/function/OTG)


2 channels

SD Host Interface/SD Slave Interface

1 channel / 1 channel

MMC Host Interface 1 channel


A/D Converters

12-bit x 8 channels (with 3ch S&H) + 12-bit x 21 channels

D/A Converters

12-bit x 2 channels

Encrypt Function


Key Length:128/192/256-bit, Block size:128-bit


True Random Number Generator (TRNG)

Random number bit length : 16-bit, time 3.6ms (typ.)

CMOS camera  interface


1 channel


CRC32, Data Operation Circuit, Port Output Enable 3, Event Link Controller, Temperature Sensor


100 LFQFP (0.5mm pitch, 14x14mm)

144 LFQFP (0.5mm pitch, 20x20mm)

100 TFLGA (0.65mm pitch, 7x7mm)

145 TFLGA (0.5mm pitch, 7x7mm)


Pin Count / Memory Size Lineup:

Program Flash


Block Diagram:

Below you will find information to support the development of your application.
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.
Video Watch videos related to this product.


Software Design Support

Title Description
CS+ An integrated development environment that can be used for coding, assembling/compiling, and simulation. (Also included with Renesas Starter Kits.)
e2 studio Renesas eclipse embedded studio, known as e² studio, is a complete development and debug environment based on the popular Eclipse CDT project.
E1 A standard Renesas on-chip debugging emulator that enables users to carry out ample debugging for real development at low cost. (Also included with starter kits.)
Renesas Starter Kit All the development tools you need for MCU evaluation and getting started. Also recommended for training.


Hardware Design Support

Title Description

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.

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

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