Press release

Renesas Launches RX72T Group to Expand Microcontroller Options for Servo Control in Industrial Robots

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Renesas Electronics Corporation (TSE:6723), a premier supplier of
advanced semiconductor solutions, today introduced the RX72T Group of
32-bit motor control microcontrollers (MCUs) with dedicated hardware
accelerator IP to perform the complex, high-speed computations required
for motor control in robots and other industrial equipment. The RX72T
Group delivers superior performance, achieving an 1160 CoreMark score as
measured by EEMBC® Benchmarks (Note 1) – the highest level
for a 5V MCU operating at 200 MHz.

“The RX72T Group brings leading performance to our extensive lineup of
MCUs optimized for industrial robotics and motor control, with built-in
IP, safety and security functions, and advanced control,” said
Akira Denda, Vice President, Industrial Automation Business Division,
Renesas Electronics Corporation. “The new MCU group extends an
easy migration path across the RX family that creates new possibilities
for extremely low-cost designs in compact industrial robots, and we are
excited to accelerate the deployment of these applications to improve
manufacturing efficiencies in industrial environments.”

Key Features of the RX72T Group of MCUs

Servo systems are becoming increasingly popular and the demand for
compact industrial robots is also rising. To implement the complex
motions required by industrial robots, high-precision control of the
position, direction, speed, and torque of the motor is required.

The RX72T MCUs include dedicated accelerator hardware that enables the
high-speed position control and speed control calculations required for
implementing servo motor control in compact industrial robots. This
allows the current control loop calculation to be performed in less than
1.5 µs (Note 2), providing a new option for users to independently
develop servo systems where previously they only had the option of
purchasing existing servo systems.

Implementing calculations in software can require excessive computing
time. However, completely hardware-based calculations can adversely
affect the flexibility to implement unique user control operations. With
the RX72T MCUs, Renesas resolves the issue by implementing only the
single-precision floating point trigonometric function (sin, cos,
arctan, hypot) and a register bank save function in hardware as
dedicated IP. This retains the flexibility while increasing the
calculation speed. Furthermore, the register bank save function
increases the speed and precision of interrupt handling, improving the
device computation performance. The MCUs also include 200 MHz PWM
inverter control timers with up to 4 channels of 3-phase control, 2
channels of 5-phase control or 10 channels of single-phase control.

Customers working with Renesas’ Failure
Detection e-AI Solutions
for motors to improve production and
productivity can pair these solutions with the new RX72T MCUs.
Characteristic data (current and speed values) that indicate the motor
state can be used directly to implement motor control and e-AI-based
failure detection with a single MCU. The MCUs also feature
hardware-based system failsafe functions and a hardware cryptography
module that can be used to encrypt/decrypt communications data.

Renesas provides programs that implement sensorless vector control and
encoder vector control. Renesas provides the Renesas
Motor Workbench 2.0
for real-time debugging and an RX72T CPU card
that supports the 24
V motor control evaluation kit

With the new RX72T MCUs, Renesas offers system manufacturers an
extensive lineup of 5V operation motor control MCUs with superlative
software compatibility. This provides a smooth migration path from the
new high-end MCUs out to the RX23T
(40 MHz), RX24T
(80 MHz), and RX66T
(160 MHz) MCUs, offering design flexibility within the RX MCU
environment. The RX72T Group is also fully compatible with the RX66T
Group incorporating the RXv3 core.

Pricing and Availability

The MCUs will be available in mass production quantities beginning in Q4
2019. The 512 KB flash, 100-pin R5F572TFBDFP device will be priced at
US$4.06 in 10,000-unit quantities. Additional pricing will vary based on
memory and pin-count configuration. (Pricing and availability are
subject to change without notice).

More Information

To learn more about the new Renesas RX72T MCUs, visit

To learn more about Renesas’ motor control solutions visit


1. CoreMark: A benchmark test designed specifically for evaluating CPU
core performance by the Embedded Microprocessor Benchmark Consortium (EEMBC®)
of the United States.

2. The execution time for the current control loop calculations in
Renesas’ research (phase current value acquisition, Clarke transform,
Park transform, current PI control, inverse Park transform, inverse
Clarke transform, space vector modulation, and setting PWM values).

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE:
) delivers trusted embedded design innovation with complete
semiconductor solutions that enable billions of connected, intelligent
devices to enhance the way people work and live. A global
leader in microcontrollers, analog, power, and SoC products, Renesas
provides comprehensive solutions for a broad range of automotive,
industrial, home electronics, office automation, and information
communication technology applications that help shape a limitless
future. Learn more at

(Remarks). CoreMark is a registered trademark of EEMBC. EEMBC is a
registered trademark of the Embedded Microprocessor Benchmark
Consortium. All names of products or services mentioned in this press
release are trademarks or registered trademarks of their respective