And why not use LPC1114? [in DIP] Its all
32KB Flash
8KB SRAM
Well, to start with, it doesn't have the stuff like MORE FLASH MEMORY that we wanted an ARM to have, and there's no growth path to another DIP chip that does have more flash...
Best part its 1 USD. We expect at least at 1.6-1.8 USD when it will reach the local market.
Digikey and Mouser are both charging nearly $6 for the LPC1114 in DIP.
Also note that it's a "wide" DIP; I don't know if you can fit it on an arduino form-factor board.