At 10:35 PM 9/22/99 , you wrote:
>Can anyone tell me the difference between the 16c73a and 16c73b chips?
>There specs seem identical, but the 16c73b sells for 1/3 less.
>
>Also, is the 16f873 readily available? It seems to be pin-compatible with
>the 16c73a/b but with a 10-bit ADC.
>
<SNIP>

The 73b is a die shrink and bug fix BUT also has a different SPI
peripheral.  It has the same SPI peripheral as the '77 but the memory map
of a '74.

Look at the SSPSTAT register definitions of the '74A,'74B and '77 devices.




Jerry Merrill

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