100 MHz Cortex-M33 for sensor-fusion control loops
The R7FA4M2AD3CFP#AA0 is a Renesas RA4M2 MCU built around a 32-bit ARM Cortex-M33 core clocked at 100 MHz. That clock rate, combined with the single-cycle multiply and hardware divide, gives you the headroom to run a sensor-fusion algorithm (e.g., accelerometer + gyro + magnetometer) alongside a real-time OS without stalling the control loop. On-chip memory totals 512 KB flash and 128 KB SRAM — enough to hold a FreeRTOS image, a BLE stack, and a few hundred sensor data points without external memory. The 8 KB EEPROM emulation area stores calibration constants and device IDs that survive power loss.
Peripheral set for wired sensor networks
Connectivity includes CANbus, USB (device/host), I²C, SPI, QSPI, SCI, and UART/USART — the CAN and USB ports let you tie the MCU directly into a vehicle CAN bus or a USB data logger without an external bridge chip. The ADC sampling rate and resolution are adequate for reading analog sensor outputs (thermocouples, strain gauges, pressure transducers) at loop rates up to a few kHz. The DAC can generate analog setpoints or waveform references. On-chip peripherals include AES encryption, DMA, LVD (low-voltage detect), POR (power-on reset), PWM timers, a temperature sensor, and a watchdog timer. The AES engine offloads encryption from the CPU — important for secure firmware updates or encrypted sensor data streams.
Active production — sourcing posture
No end-of-life notice or successor has been published. This is a current-production part, not a last-time-buy or obsolete line. Package is a 100-LQFP (14x14 mm) — a hand-solderable QFP. The exposed pad on the bottom requires a thermal land on the PCB for heat sinking; a four-layer board is recommended for fan-out of the inner rows.