R5K574MCW4FB#10

The R5K574MCW4FB#10 takes the W signature to the RX74M family's full memory size in a leaded package: RXv3e core at 480 MHz, 1024 KB of code MRAM, 48 KB of data MRAM and 1.5 MB of ECC SRAM, three channels each of CAN and CAN FD, a 10M/100M Ethernet MAC and no EtherCAT slave, in an LFQFP-144 (20 x 20 mm) with full-carton packing. It serves larger control programs - multi-axis machine controllers, building-automation gateways - that need the megabyte of code space and CAN FD throughput in a QFP footprint, with no EtherCAT segment to serve. Selection advice: against the in-catalog R5K574MCV4FB#10, identical in memory, package and clock, this W code is the one that adds CAN FD, so frozen CAN 2.0 designs stay with V; against its 512 KB sibling R5K574M6W4FB#10 the choice is purely memory headroom, and EtherCAT designs belong to the F- and A-signature pages, not this one. Parameters verified against Renesas Electronics documentation.