The MCU is made for motor control in fans, tools, and more. It runs fast, saves power, adds safety, and comes with software support.
Renesas Electronics Corporation has introduced the RA2T1 group of microcontrollers (MCUs), designed for efficient single-motor control in appliances such as fans, power tools, vacuum cleaners, printers, and more. Built on a 64 MHz Arm Cortex-M23 core, the MCUs combine precise motor control, integrated safety features, and broad software support to help developers speed up product design.
Key motor control features include a 3-channel sample-and-hold (S&H) function that reads 3-phase current values of BLDC motors simultaneously, enabling more accurate control than sequential sampling. The MCUs also offer complementary PWM with automatic dead-time insertion and asymmetric PWM generation, improving performance in inverter drive applications.
To enhance system safety, the RA2T1 provides a Port Output Enable function and high-speed comparators that can instantly shut off PWM signals when overcurrent conditions are detected. These safety responses are configurable based on the inverter’s requirements.
The MCU is supported by Renesas’ Flexible Software Package (FSP), which includes middleware, peripheral drivers, multiple RTOS options, and reference software for motor control, AI, and cloud connectivity. FSP enables code reuse, supports legacy integration, and simplifies migration across the RA MCU family.
Some of the key features of the MCU includes:
- Core: 64 MHz Arm Cortex-M23
- Memory: 64KB Flash, 8KB SRAM, 2KB Data Flash
- Analog: 12-bit ADC with 3-channel S&H, temperature sensor, internal reference, 2 high-speed comparators
- System: On-chip oscillators (high/mid/low), clock output, power-on reset, voltage detection, event link, data transfer, interrupt control, low-power modes
- Safety: PWM shutdown, SRAM parity check, ADC self-test, clock accuracy check, illegal memory access detection
- Operating Temp: -40°C to 125°C
- Voltage Range: 1.6V to 5.5V
- Packages: 48-LQFP, 32-LQFP, 48-QFN, 32-QFN, 24-QFN (4×4 mm)
“Customers have trusted Renesas motor control solutions for many years across thousands of systems,” said Daryl Khoo, Vice President of Embedded Processing Marketing Division at Renesas. “The RA2T1 MCUs enhance our leadership in this area with market-leading technology, low-power operation, and legendary Renesas quality and safety standards for single-motor systems.”
