Hi,

sometimes are tasks to solve below the AT89C2051.
I found a nice chip with 6 I/O pins from Fairchild: ACE1202

In comparison with the PIC12C509 it is many times better to understand for us 8051 guys. It have a really plain and easy instruction set.


For more informations please look at:

http://www.fairchildsemi.com/products/memory/ace/

http://www.specs.de/~danni/ace/index.htm



Peter