AVR-Chat

In the normal configuration, the MCP23S17 needs 5 lines tied to the AVR.  One of these lines is the RESET line input to the MCP chip.

As I read the data sheet, the use of that line is to allow the AVR to instruct that chip to perform a reset.

I do not anticipate needing to issue the instruction to reset the MCP via the AVR.  The MCP will serve a similar function to a BCD in, one of 16 decoder.  

Question:  In this case, where no master reset of the MCP is anticipated, would the RESET line still be required?

In one of my applications, I only have 4 lines available and the MCP would be the perfect solution.  Assuming I won't need to use the RESET connection over to an IO on the AVR, that is.

Appreciate any comment from the distinguished group.

Thanks/jeff   



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