R5K574MCF4FC#10

In the 176-pin LFQFP tier of the RX74M, the R5K574MCF4FC#10 is the CAN FD variant: the RXv3e core runs at the 300 MHz tier with 1 MB of code MRAM, 48 KB of data MRAM and 1.5 MB of ECC SRAM, and the interface set pairs the two-channel EtherCAT slave with CAN FD and 10/100 Ethernet channels. The lower clock eases power and thermal design on dense control boards, while the large MRAM leaves room for protocol stacks and field-updatable application code. Selection advice: the same-batch R5K574MCC4FC#10 uses this package at 480 MHz with classic CAN 2.0, so the F code suits CAN FD networks that do not need the higher clock; the 512 KB R5K574M6F4FP#10 offers the same 300 MHz CAN FD EtherCAT signature in a smaller 100-pin footprint for cost-driven nodes. Parameters verified against Renesas Electronics documentation.