I think it is hardly justifiable to use 8-bit microcontrollers anymore. ATMega328: 8-bit @ 20MHz, 2 kiB RAM, NO USB =3D US$3.25 @ 1, US$1.63 @ 1000 PIC32MX110F016B: 32-bit @ 40MHz, 4 kiB, NO USB =3D US$2.50 @ 1, US$1.73 @ 1= 00 PIC32MX210F016B: 32-bit @ 40MHz, 4 kiB, USB OTG =3D US$2.69 @ 1, US$1.86 @ = 100 ATSAM3U1CB: 32-bit @ 96MHz, 20kiB RAM, Hi-Speed USB device =3D US$5.71 @ 1, US$2.85 @ 1000 ATSAM3S1BA-AU: 32-bit @ 64MHz, 16kiB RAM, USB Device =3D US$4.66 @ 1, US$2.33 @ 1000 Do not forget that both PIC32 (MIPS 4K) and ATSAM3 (ARM Cortex-M3) have 4GiB linear addressing space like any desktop computer while the ATMEGAs and PICs use Havard Architecture with odd memory mappings. Isaac On 23/05/2015 02:33, Chetan Bhargava wrote: > This thread is not even enlightning but even tempting. > > Russell, I appreciate the links that you have posted. According to your > links my recent Mouser purchase is worthless. I Recently purchased 25x > ATMEGA328 for $2.48 each. I wish I shoudl have waited to see this thread = ;-) > > Of course I get peace of mind when buying from suppliers of repute like > Mouser but How can you go wrong buying a full "A" board (sssshhhh - Olin= ) > around same price. > > Thanks for sharing your research which will be quite useful like always. > > Regards, > > Chetan Bhargava > http://microz.blogspot.com > > > > On Fri, May 22, 2015 at 9:58 PM, RussellMc wrote: --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .