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Full Version: PCF8574 or MCP23017
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Hi...
I am curious about why all of your I/O expander ports are using PCF8574. Why did you choose PCF8574 instead of MCP23XXX series/MCP23017 ? (some more advantages over the pcf8574)[Image: biggrin.png]
these two chip all can use. just in China, PCF is easy to buy.