Попалась ссылка использользования Forth для LPC2ххх.

With the rising interest in embedded Forth, we have decided to make
a demo system for Philips LPC2xxx CPUs. I had a couple of hours
spare yesterday, so a second cut is now available. You need 64k
Flash, 16k RAM and a 10, 12, or 14.7 MHz crystal and a terminal
emulator at 115200 baud. The distribution includes multitasking,
floating point and a manual!

http://www.mpeforth.com/arena/lpcforth.zip

Bye,
P.S: Если будете использовать поделитесь впечатлениями.