240 MHz Cortex-M33 for real-time motor control
The R7FA6T2AD3CNB#AA0: The RA6T2 MCU runs a single ARM Cortex-M33 core at 240 MHz — the math throughput and deterministic interrupt latency suit it for field-oriented control of PMSM and BLDC motors where the control loop must close inside 50 µs. On-chip memory is 512 KB flash for the application stack and motor-control library, 64 KB SRAM for data buffers and real-time variables, and 16 KB dedicated EEPROM — the EEPROM block holds calibration coefficients and fault logs without wearing the main flash. The 18-channel 12-bit SAR ADC and 4-channel 12-bit DAC cover three-phase current sensing, DC-link voltage, and temperature monitoring with a spare channel for an encoder or resolver interface.
Connectivity and peripheral set
Serial interfaces include I²C, SPI, SCI, UART/USART, and LINbus — sufficient for sensor readout, encoder data, and a gateway to a fieldbus ASIC. No CAN or Ethernet on-chip, so those links require an external transceiver or protocol controller. The peripheral set includes DMA, LVD, POR, PWM, and WDT — the PWM timer group is the critical block for motor-drive output; the DMA offloads ADC result transfers without CPU intervention. 51 general-purpose I/O are available in the 64-HWQFN package — enough for a basic motor-drive interface with encoder, hall sensors, fault inputs, and a serial debug port, but not for a large HMI or parallel display.
Compliance and sourcing posture
The part is RoHS3 compliant.