240 MHz Cortex-M33 for real-time motor control
The R7FA6T2AB3CFP#BA0: The RA6T2 runs a single Cortex-M33 core at 240 MHz — the clock ceiling for a motor-control loop that must calculate FOC (field-oriented control) current vectors inside a 50 µs PWM cycle. With 256 KB flash and 64 KB RAM, there is room for a sensor-fusion stack plus a bootloader staging area for OTA updates without external memory. The 38-channel 12-bit SAR ADC and 4-channel 12-bit DAC cover the analog front-end for multi-phase current sensing and reference outputs — enough channels for a three-phase motor with shunt resistors plus a resolver or encoder feedback path.
Package rework and board-fit note
Will it survive the hot air? Yes — the lead pitch is wide enough for a fine-tip iron or hot-air rework station; the 14x14 mm body means the heat spreads evenly and the part does not cook before the solder reflows. The pad layout is standard LQFP-100; no hidden thermal vias under the body to trap flux.
Industrial temperature grade and peripheral set
The on-chip DMA, PWM timers, and watchdog timer (WDT) are the motor-control workhorses; the DMA offloads ADC conversion results to RAM without CPU intervention, keeping the core free for the control algorithm. Connectivity covers I²C, SPI, SCI, UART/USART, and LINbus — enough for sensor buses, encoder interfaces, and field-level communication with a drive or PLC.