120 MHz RXv3 core — flash wait states set the real throughput
The R5F56609GGFP#30 is a 32-bit microcontroller from the RX600 series, built around the RXv3 core running at 120 MHz. This is the maximum clock speed for the family, but the actual DMIPS delivered depends on the flash wait-state profile — at 120 MHz the flash typically inserts one wait state, so the effective instruction throughput is slightly below the raw clock rate. On-chip memory includes 1 MB of program flash, 128 KB of SRAM, and 32 KB of data flash that can serve as EEPROM emulation. That memory map handles a mid-complexity control application — a motor drive with field-oriented control, a multi-axis servo, or an industrial gateway — without external memory.
Analog front-end and fieldbus connectivity
The ADC subsystem provides 24 channels at 12-bit resolution, enough to sample current and voltage feedback from three motor phases plus auxiliary sensors. Two 12-bit DAC channels can output analog setpoints or compensate sensor offsets. Connectivity includes CAN, I2C, SCI, SPI, and LIN — this covers the common fieldbuses for industrial and automotive networks. The EBI/EMI interface allows expansion to external SRAM or display controllers if the on-chip 128 KB is insufficient.
Peripherals include DMA, LVD, POR, PWM, and WDT — the low-voltage detector and watchdog are essential for safety-critical designs that need brown-out detection and independent watchdog supervision.
Lifecycle and supply posture
Renesas continues to manufacture this RX600-series MCU, and it is suitable for new designs. The part is ROHS3 compliant.