Grįžti į Renesas Electronics

Renesas Electronics RA8T2 Motor Control Microcontrollers

Renesas Electronics RA8T2 Motor Control Microcontrollers (MCUs) are high-end MCUs for motor control and are primarily intended for industrial applications where high-control precision is required. In addition to motor control, the Renesas RA8T2 can also provide synchronous communication and system control using Ethernet or EtherCAT, all on a single chip. Developed using a cutting-edge 22nm process technology, these MCUs achieve high-speed operation of the Arm® Cortex®-M85 core and integration of large-capacity memory. In addition, the dual-core option (with the Arm Cortex-M33 core) significantly improves parallel operation performance. In motor control use cases, the main core performs real-time control, and the other core performs system control and high-speed communication.

Features

  • Motor-control MCU delivers 1GHz operating performance
    • Targets high-efficiency, high-precision motor control applications such as AC drives and AC servos for FA machine tools, manufacturing equipment, and industrial robots
    • Operates at up to 1GHz, more than twice the performance of the existing RA8T1 Group operating on a 480MHz Cortex-M85 core
    • Cortex-M33 CPU core (an optional product specification) operates at 250MHz and can be assigned to communication and non-real-time control in parallel with the main core
    • Equipped with a high-speed Magnetoresistive Random Access Memory (MRAM) non-volatile memory as an MCU, and the cache memory further improves the latency of MRAM
    • Equipped with a large-capacity TCM with 256KB for Cortex-M85 and 128KB for Cortex-M33 (optional), 64KB I/D caches
    • A system that does not rely on cache provides users with high-precision real-time performance with less jitter, and can provide stable performance in motor control processing with many interrupts and branches
  • 8MB/4MB Flash, 1MB/512KB MRAM, and 2MB SRAM
  • Optimized digital and analog functions for high-efficiency, high-precision motor control required for industrial equipment
    • Timer function supports 300MHz Pulse Width Modulation (PWM), easy handling by control software, and efficient waveform generation for driving inverters
    • Complementary PWM function of the GPT timer (optimized for inverter drive) makes it easy to implement control algorithms, such as output of complementary PWM for multiple phases (including single- and three-phase), automatic insertion of dead time, generation of asymmetric PWM, and linkage with AD and comparators
    • Analog-to-Digital Converter (ADC) has a 16-bit resolution and a channel-specific sample and hold function (3x channels), enabling high-precision simultaneous sampling of 3-phase current values, eliminating the need for correction processing, reducing the software load, and contributing to improved control precision - equipped with two units, it is possible to simultaneously sample 3-channel currents of two motors
    • 12-bit Digital-to-Analog Converter (DAC), temperature sensor, and high-speed comparators
    • GPT is equipped with PWM output and a timer with a phase counting function, making it possible to control AC servos that require axis position information using a two-phase pulse encoder
    • Port Output Enable (POEG) and high-speed comparator function allow the PWM output to be quickly shut off when an overcurrent is detected and the shutoff state can be selected (Hi-z, Hi, Low) according to the inverter specifications
  • USB 2.0 FS, DSMIF, CAN FD, I2C/I3C, SDHI/MMC, OSPI, and extended memory bus
  • Support for IA network functions, which are increasingly popular in the industrial field, to enable synchronous control and redundancy protocols
    • 2x Gigabit Ethernet ports compatible with various IA protocols and TSN (a HW switch with TSN functionality)
    • 2x optional EtherCAT slave controllers are built in, and because it is a dedicated controller, high-speed communication is possible with a small footprint
    • EtherNet/IP and PROFINET are planned to be prepared as partner solutions
    • Function block to support TSN - a technology for use in industrial equipment such as motors and machine tools, and enables traffic scheduling and shaping based on synchronization functions
    • TSN is defined by IEEE standards, and RA8T2 supports the following standards, with plans to add more
      • IEEE 802.1AS-Rev - realizes time synchronization on the network
      • IEEE 802.1Qbv - schedules traffic within the network and delivers Ethernet frames to the destination device within a certain time; existing Ethernet can add priority, but Qbv also achieves frame transmission within a certain time
      • IEEE 802.1Qbu - Qbv allows scheduling, but the next queue cannot interrupt a frame until it is completed, allowing a high-priority Ethernet frame to interrupt a low-priority Ethernet frame during transmission, improving QOS (Quality of Service); in cases where delay requirements are strict, 802.1Qbu functions are added to the 802.1Qbv functions
  • Scalable across motor-control MCUs using compatible development tools
    • Supports common evaluation boards and tools for motor control microcontrollers
    • Compatible with the Flexible Motor Control Kit (MCK), evaluation using brushless DC motors can be easily started, users can also change to other MCUs and inverters for evaluation by changing the combination with a compatible CPU card (MCB) and inverter boards
    • Various sample programs, such as fixed-point based sensorless/sensorized (encoder, Hall sensor) vector control, 120° conduction control, etc. are available for easy evaluation
    • Inherits the same interface specifications as the existing MCK/MCB, and by adding 2x Ethernet, 2x EtherCAT slave, PMOD, and an SD card slot, it is possible to evaluate communications and user interfaces in addition to motor control

Applications

  • AC drives, AC servos without an absolute encoder, robotics, and actuators
  • PLCs, power inverters, and pumps
  • Network communication module for motors  
  • High-end smart home appliances, such as inductive heating and dishwashers
  • Motor predictive maintenance
  • Industrial sensors

Videos

Resources

Development Tools

Renesas Electronics MCK-RA8T2 Flexible Motor Control Kit

Includes a CPU board, an inverter board, a communication board, and a BLDC motor.

Learn Moreabout Renesas Electronics MCK-RA8T2 Flexible Motor Control Kit View Productsrelated to Renesas Electronics MCK-RA8T2 Flexible Motor Control Kit

Block Diagram

Block Diagram - Renesas Electronics RA8T2 Motor Control Microcontrollers

Application Example - Synchronous Robotic Arm

Application Circuit Diagram - Renesas Electronics RA8T2 Motor Control Microcontrollers
Paskelbta: 2025-09-05 | Atnaujinta: 2026-01-09