Did y'all notice that motorola recently announced "the first" OTP
microcontroller to sell for less than $0.50 (in large quantities, <$1 in
small quantities.)  It's a 68HC05 varient with 16 pins (10 IOs), not as
(pin) efficient as a 12C508, but moderately interesting.  The way I read
the selection matrix, this is actually a MORE capable version of their
previous low-end 6805, but I might be missing something since I'm not
overly familiar with their oddish numbering scheme.

BillW