160 MHz RXv3 core with on-chip memory mix
The R5F566TAAGFN#30 is a 32-bit MCU from Renesas' RX series, built around the RXv3 core running at 160 MHz. This places it in the mid-to-high performance tier of the RX family, suitable for motor control, industrial networking, and multi-protocol gateway applications where the core handles both control loops and protocol stacks without a separate communications processor. On-chip memory includes 256 KB of Flash (256K x 8), 64 KB of RAM (64K x 8), and a separate 32 KB EEPROM array (32K x 8). The dedicated EEPROM block is useful for storing calibration constants, configuration parameters, or fault logs without wearing the Flash program memory — a practical advantage over MCUs that emulate EEPROM in Flash with software wear-leveling.
Supply range, temperature grade, and package
Packaged in an 80-LQFP (12x12 mm body, 0.50 mm pitch) with a supplier device package of 80-LFQFP (12x12). The 52 I/O lines break out to the peripheral set, leaving enough headroom for a parallel LCD bus or external memory interface alongside the standard serial ports.
Peripheral set and connectivity
On-chip peripherals include DMA, LVD (low-voltage detect), POR (power-on reset), PWM, and WDT — the basic watchdog and brown-out protection needed for safety-related firmware without an external supervisor IC. Data converters provide 19 channels of 12-bit A/D and 2 channels of 12-bit D/A, enough for simultaneous sampling of three-phase currents plus auxiliary analog inputs in a motor drive. Connectivity covers CANbus, EBI/EMI (external bus interface), I²C, LINbus, MMC/SD, SCI, SPI, SSI, and UART/USART. The EBI/EMI allows glueless connection to external SRAM or NOR Flash for applications that need more than the on-chip 64 KB RAM, while the MMC/SD interface supports data logging to a removable SD card.