Chip enable for a MCP23016
Originally Posted by
skimask
If you're using the I2CREAD/I2CWRITE commands, just use a different clock pin for a different set of chips. Or maybe use one of the port expander as a chip select for the rest of the port expanders.
Thanks! I considered the dual-clock pin idea. Have you done this? I just can not affort to have anything get wiggled on the non-clocked port expanders.
How would you use a CE for the 23016s?
I have looked again on the web but have not found any 4 channel addressing port expanders! You would think one would be made by someone?
"If we knew what we were doing, it wouldn't be called research"
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