Radboud Verberne wrote:
> A 16c84 - 04/p can always run on a 10Mhz X-tal.

Yes, it has been discussed ... but have you checked that at 10Mhz it
still runs at both extremes of rated supply voltage and temperature, or
are you basing your observations on 5V 21C?

And does the operating current stay within the data sheet limits?

It is standard procedure in chip manufacturing to label batches of
identically produced parts according to how the batches pass the final
tests.  Sometimes not even batches, but down to the part level.

We do it with 64 bit Alpha microprocessors too.

--
James Cameron                                    (cameron@stl.dec.com)
Digital Equipment Corporation (Australia) Pty. Ltd. A.C.N. 000 446 800