R5K574NCB4AE#00

The R5K574NCB4AE#00 is an RX74N microcontroller ordering code from Renesas in an LFBGA-320 package, configured with 1 MB of memory, CAN FD and a gigabit Ethernet MAC. The RX74N branch of the family is the Ethernet-first one: the gigabit MAC serves high-throughput industrial networking, gateways and equipment controllers that move serious data over standard Ethernet infrastructure, while CAN FD covers the machine-level fieldbus side in the same device. That pairing lets one controller bridge a plant network and a CAN FD segment without an external MAC, PHY companion controller or gateway MCU, which simplifies both the hardware design and the software stack the team has to maintain. Selection advice: be deliberate about the family letter, because it changes the network story. This N code deliberately has no EtherCAT; designs that must join an EtherCAT network belong on the RX74M codes instead, such as the 1 MB R5K574MCA4AE#00 with CAN 2.0 or the 512 KB R5K574M6B4AE#00 with CAN FD. Within the RX74N line, this is the larger-memory 320-ball configuration; a 512 KB code exists for smaller firmware images. Always quote the complete ordering code including the #00 suffix, as Renesas assigns memory size and interface options at this level of the part number. Parameters verified against Renesas Electronics documentation.