>     1) As we know, PICs have one bus for program, separated of the
> memory bus. Is there a way of writing data to the flash memory while a
> program in running in the mcu? I guess not, but would like to confirm.

A lot of the recent PICs can do this: 16F87x(A), all 18F's, and even the
lovely 16F818/819. Tip: these are the PICs that can be used with a
bootloader.

>     2) As i need memory, i was looking for pics with big memory....but
> all pics with more than 1k of memory...seem to be smd. Is
> there any 18F
> non-smd? Or is there any 16F with more than 250-byte memory?

Which memory are you talking about (code, RAM, data eeprom)? Check
http://www.truly.de/download/alpha/MC-161-1/MTC-C161DPRN-1N.pdf for some
figures.

Wouter van Ooijen

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consultancy, development, PICmicro products

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