![]() ![]() Can be configured as active-high, active-low or open-drain Hardware address pin A2 – Must be externally biased Hardware address pin A1 – Must be externally biased Hardware address pin A0 – Must be externally biased Can be enabled for interrupt-on-change and/or internal weak pull-up resistor By the end of this section, you will know how to add MCP23017 IO expanders to your applications to increase the number of GPIOs.īidirectional Input Output pin. I will cover details about the electrical parameters, pin functions, and more. In this section, we will understand more about the MCP23017 IC. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on. Arduino USB cable (for powering Arduino and programming) x 1.MCP23017 I2C I/O Expander – 16 GPIOs x 1.How much current can the MCP23017 supply?Ĭomponents Needed To Build Arduino MCP23017 Project Project Hardware Components.How do I connect my Arduino to the MCP23017?. ![]() FAQs About The IO Expander MCP23017 And Arduino Projects.Code to blink an LED connected to Pin A0 of the IO Expander.How To Connect The MCP23017 IO Expander To The Arduino UNO?.Step-By-Step Instructions To Connect The MCP23017 IO Expander With Arduino UNO. ![]()
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