RA8T2 - 1GHz Arm Cortex-M85 Motor Control MCU | Renesas
MPN: RA8T2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
RA8T2 Overview
A microcontroller (MCU) is a single-chip integrated circuit that combines a processor core, memory, and peripherals to execute dedicated control tasks. Within the hierarchy of embedded processors, the RA8T2 sits at the top of Renesas' RA family of Arm-based MCUs, above general-purpose Cortex-M4/M33 parts, and competes with high-end digital signal controllers in the industrial automation domain.
Key features include over 7,000 CoreMark performance enabled by an advanced 22 nm process, advanced-function PWM and high-resolution PWM timers for precise motor drive waveforms, and high integration with a Layer 3 Ethernet Switch Module, USB 2.0 Full-Speed, CAN FD, SDHI, I3C, and Octal SPI with decryption on-the-fly. MRAM code storage provides fast, reliable non-volatile memory with high endurance compared to conventional Flash.
Technically, the dual-core architecture separates high-speed field-oriented control (FOC) loops on the 1 GHz Cortex-M85 from communication stacks and supervisory tasks on the 250 MHz Cortex-M33, delivering deterministic real-time behavior. Hardware ECC on the 2 MB SRAM and functional-safety-oriented peripherals support demanding industrial equipment requirements.
Typical applications include industrial servo drives, brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) control, robotics, and high-end factory automation equipment where sub-microsecond control-loop latency is essential. EtherCAT-class industrial networking is supported via the Ethernet switch module.
Design consideration: choose the correct speed-grade orderable part number (e.g., 1 GHz vs 600 MHz variants such as R7KA8T2LFLCAB#UC0 vs R7KA8T2AFECAB#BC1) and validate thermal design at full 1 GHz operation, as 22 nm high-frequency operation demands attention to power dissipation and PCB thermal relief.
This page synthesizes distributor data, datasheet highlights, orderable-part variants, and practical design guidance not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for RA8T2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
R7KA8T2LFLCAB#UC0
β Drop-Inπ Reference alternative (not in catalog)
R7KA8T2AFECAB#BC1
β Drop-Inπ Reference alternative (not in catalog)
RA8T2 Maximum Ratings & Electrical Characteristics
| Core Processor | Arm Cortex-M85 (32-bit) |
| Core Frequency (max) | 1 GHz |
| Secondary Core | Arm Cortex-M33, 250 MHz |
| CoreMark Performance | > 7,000 CoreMark |
| Code Memory | Up to 1 MB MRAM |
| SRAM | 2 MB with ECC |
| Process Technology | 22 nm |
| Ethernet | Layer 3 Ethernet Switch Module |
| USB | USB 2.0 Full-Speed |
| CAN | CAN FD |
| Memory Card Interface | SDHI |
| Serial Interfaces | I3C, Octal SPI with decryption on-the-fly |
| Timers | Advanced-function PWM, High-resolution PWM |
| Package (R7KA8T2AFECAB#BC1) | 224-BGA (11x11 mm) |
| Target Application | Industrial motor control |
| Datasheet Revision | R01DS0436EJ0120 Rev.1.20 (Jul 31, 2025) |
RA8T2 224-bga (11x11 mm) Pin Configuration Guide
Pin configuration for RA8T2 (224-bga (11x11 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for RA8T2.
Refer to the datasheet for full pin configuration.
Typical Applications
RA8T2 is suitable for 6 applications: Industrial Servo Drives, BLDC / PMSM Motor Control, Industrial Robotics, Factory Automation and PLC Modules, Networking-Enabled Motor Equipment, High-End Power Tools and Appliances (Premium Tiers).
Industrial Servo Drives
Industrial servo drives demand deterministic, high-bandwidth current, velocity, and position control loops. The RA8T2 fits this role with its 1 GHz Arm Cortex-M85 core delivering over 7,000 CoreMark, enabling field-oriented control (FOC) loops at rates impossible for mid-range MCUs, while the 250 MHz Cortex-M33 independently runs EtherCAT-class communication via the Layer 3 Ethernet Switch Module. High-resolution PWM timers generate precise inverter waveforms with minimal dead-time distortion, improving torque linearity. The 2 MB ECC-protected SRAM and 1 MB MRAM provide reliable code and data storage for continuous industrial operation. Placed as the single-chip controller between the encoder feedback interface and the gate-driver stage, the RA8T2 removes the need for a separate communication coprocessor, reducing BOM cost and control-loop latency.
Recommended
BLDC / PMSM Motor Control
Brushless DC and permanent magnet synchronous motor control is the primary design target of the RA8T2. Its advanced-function PWM and high-resolution PWM timers produce the precise, high-frequency switching patterns required for sensorless and sensored FOC, while the 1 GHz Cortex-M85 executes the control mathematics with large timing margin, permitting faster PWM frequencies and higher-order observers for better low-speed performance. Renesas specifically ships the MCK-RA8T2 kit with a PMSM, inverter board, and QE for Motor software to shorten time-to-torque. The dual-core split - control on M85, housekeeping on M33 - keeps current-loop jitter minimal. CAN FD connectivity supports integration into industrial fieldbus systems, and ECC on the 2 MB SRAM safeguards control state variables against bit errors in electrically noisy motor environments.
Recommended
Industrial Robotics
Multi-axis robots require simultaneous high-rate control of several motors plus real-time networking. The RA8T2 addresses this with over 7,000 CoreMark of compute on the Cortex-M85 for per-axis kinematics and current control, the 250 MHz Cortex-M33 for protocol stacks, and the integrated Layer 3 Ethernet Switch Module for deterministic industrial Ethernet communication without an external switch chip. High-resolution PWM supports the smooth, low-torque-ripple actuation demanded by articulated joints. The 22 nm process achieves this performance at manageable power for densely packed joint electronics, and 2 MB SRAM with ECC maintains trajectory data integrity. Octal SPI with decryption on-the-fly enables secure, high-throughput firmware and model storage for AI-assisted motion features in next-generation collaborative robots.
Recommended
Factory Automation and PLC Modules
Factory automation controllers benefit from the RA8T2's combination of high-speed processing and rich connectivity: CAN FD, USB 2.0 Full-Speed, SDHI, I3C, and the Ethernet Switch Module cover fieldbus, HMI, logging, and sensor aggregation in one chip. The 1 GHz Cortex-M85 executes PLC scan logic and motion profiles concurrently with communication stacks handled on the Cortex-M33, keeping cycle-time jitter low. Over 7,000 CoreMark supports advanced functions such as predictive maintenance analytics at the edge. Secure boot and on-the-fly decryption on Octal SPI protect proprietary control logic, an increasing requirement in connected factories. The 1 MB MRAM withstands frequent parameter writes in configuration-heavy automation environments where conventional Flash endurance would be a constraint.
Recommended
Networking-Enabled Motor Equipment
Motor-driven equipment that must participate in industrial Ethernet networks - conveyor systems, pumps, HVAC blowers, and processing lines - leverages the RA8T2's integrated Layer 3 Ethernet Switch Module. Unlike MCUs requiring an external Ethernet switch PHY/switch IC, the RA8T2 handles switched Ethernet traffic natively, supporting daisy-chained topologies common in modern drive installations and reducing system BOM. The 1 GHz Cortex-M85 sustains both the network protocol processing and the motor control loops without starvation, and the 250 MHz Cortex-M33 isolates stack software from hard real-time code. CAN FD provides a secondary robust fieldbus channel for legacy integration. On-the-fly decryption of code fetched via Octal SPI protects firmware in network-accessible equipment exposed to security threats.
Recommended
High-End Power Tools and Appliances (Premium Tiers)
Premium cordless power tools and appliances increasingly adopt high-performance sensorless BLDC control for efficiency and torque response. The RA8T2's 1 GHz headroom allows sophisticated sensorless observers and adaptive control algorithms to run at very high PWM frequencies, reducing acoustic noise and improving battery runtime. High-resolution PWM delivers smooth startup and low-torque-ripple operation critical for user experience. CAN FD and I3C interfaces support smart battery packs and digital sensor fusion, while the 22 nm process keeps power consumption acceptable for battery-powered form factors at 600 MHz or 1 GHz speed grades. Secure code storage via encrypted Octal SPI protects proprietary control algorithms in competitive consumer-product markets where firmware reverse engineering is a concern.
Recommended
Recommended Products Summary
Engineering reference data for RA8T2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R7KA8T2LFLCAB#UC0 | R7KA8T2AFECAB#BC1 |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Max Core Frequency | 1 GHz (Cortex-M85) | 1 GHz | 600 MHz |
| Secondary Core | 250 MHz Arm Cortex-M33 | 250 MHz Arm Cortex-M33 | 250 MHz Arm Cortex-M33 |
| Code Memory | Up to 1 MB MRAM | Up to 1 MB MRAM | 1 MB MRAM |
| Ethernet Switch Module | Layer 3 Ethernet Switch | Layer 3 Ethernet Switch | Layer 3 Ethernet Switch |
| Process Technology | 22 nm | 22 nm | 22 nm |
Key Differentiators
- Industry-leading 1 GHz Cortex-M85 core (vs R7KA8T2AFECAB#BC1)
- MRAM code storage instead of Flash (vs Conventional Flash-based motor-control MCUs)
- Integrated Layer 3 Ethernet Switch Module (vs Competing motor-control MCUs without integrated switching)
Design Notes
The RA8T2 runs a 1 GHz Cortex-M85 on a 22 nm process; core supply rails are internally regulated but the PMIC or buck converters feeding VDD must support the peak transient currents of 1 GHz switching activity. Renesas power architecture details are in the RA8T2 Group datasheet (R01DS0436EJ0120 Rev.1.20). Estimated: dynamic power scales roughly with frequency squared, so a 600 MHz variant dissipates materially less than the 1 GHz grade - choose the lowest speed grade that meets your control-loop budget to ease thermal design.
For the 224-BGA (11x11 mm) package, use a multilayer PCB with dedicated ground planes under the die and full via-fan-out on power and ground balls to minimize supply impedance at gigahertz-class internal clock rates. Decouple each power domain per the Renesas datasheet hardware design guide recommendations. The Layer 3 Ethernet Switch Module requires careful PHY placement and magnetics layout - follow the MCK-RA8T2 reference design (RTK0EMA6L0S00020BJ) as a proven layout starting point for motor-control-plus-Ethernet systems.
Do not assume all RA8T2 orderable suffixes are interchangeable: R7KA8T2LFLCAB#UC0 (1 GHz) and R7KA8T2AFECAB#BC1 (600 MHz, 224-BGA) differ in maximum core frequency, package, and possibly temperature/qualification options. Verify the exact suffix in the RA8T2 Group datasheet ordering table before layout release. Also confirm the full FSP version supports your chosen part, and validate MRAM wait-state settings at your selected core frequency.
Compliance Information
Compliance status not stated in retrieved web data; consult the official Renesas product page for RoHS/REACH declarations.
