Hi, Sebastian,
Pls refer to the screenshot, I think the difference between LPC54605J512ET180E and LPC54605J512ET180K is only the packing difference, the silicon is the same from pin assignment, peripheral, memory size...
https://www.nxp.com/part/LPC54605J512ET180#/
Hope it can help you
BR
XiangJun Rong
xiangjun_rong_0-1628674026882.png