R5K574NCF4FC#10

The R5K574NCF4FC#10 closes the RX74N matrix at the low-clock, high-memory corner: a 176-pin LFQFP running the RXv3e core at 300 MHz with 1 MB of code MRAM, 48 KB of data MRAM, 1.5 MB of ECC SRAM, CAN FD and 10/100 Ethernet channels. The relaxed clock tier helps power and thermal budgets on densely populated control boards, while the large MRAM and full pin count keep protocol stacks, field updates and extensive I/O in scope. Selection advice: against the same-batch R5K574NCD4FC#10 in this identical package, this code steps the clock down from 480 MHz and is the pick when CAN FD and memory matter more than cycle rate; on the RX74M side, the R5K574MCF4FC#10 is the analogous signature with an EtherCAT slave added. Parameters verified against Renesas Electronics documentation.