R5K574MCU4AE#00

The R5K574MCU4AE#00 pairs the RX74M family's largest memory with its full CAN FD set and leaves EtherCAT out: 1024 KB of code MRAM, 48 KB of data MRAM and 1.5 MB of ECC SRAM behind a 600 MHz RXv3e core, three channels each of CAN and CAN FD, a gigabit Ethernet MAC (10M/100M/1G) and no EtherCAT slave controller, in the 320-ball LFBGA with full-carton packing. It is aimed at equipment controllers and protocol gateways whose code base has outgrown 512 KB and whose buses already run CAN FD, but whose networking is standard Ethernet with TSN rather than EtherCAT. Selection advice: the in-catalog R5K574MCT4AE#00 shares this memory size, package and clock but speaks classic CAN 2.0 only, so this U code is the pick when CAN FD is on the board; the A-signature codes add the two-channel EtherCAT slave at the same memory tier and should be chosen only when that network is actually planned. Parameters verified against Renesas Electronics documentation.