I used to do some stuff with the 8051 family. For a new project I want to
jump into the PICs -- it seems that they're cheaper for what I need, and the
project is for a bigger production volume, therefore parts cost sensitive.


I need to measure a resistor value (slow, 8bit: ADC, or PWM w/ comparator,
or even just a comparator, charging a C and measuring time), and independent
of this a timer in about 100ms intervals, and interrupt capability. Some few
(3) digital i/o pins additionally. Small program and data memory should be
enough.

What I came up with is the 16c71 (the smallets of the three, 71, 710, 711),
which fits. But is there maybe a cheaper device that fits, too -- any
suggestions?


Which leads me to some starter questions: I have a databook from 1994, which
has a comparison chart of the different devices. But the newer ones are
missing, of course. In the Microchip web site I couldn't find a chart
stating the features of each type. Could somebody point me to such a chart?
And an online source of prices, like a comparative list of all PICs, not for
absolute values (which I'd have to check anyway), but for relative pricing
information (which type is about how much cheaper than another and so on).


One of the newer features is "FlexROM". I downloaded some datasheets, but
they only state that the device has a FlexROM, without explaining what it
is. Any help/pointers to this?

Thanks