Addresses available are specified in the I2C controlīyte and each device is selected by the I2C sequence below: The 23017 has three input pins to allow you to set a different address forĮach attached MCP23017. The "Current Max into Vdd" is the sum of all sourcing currents. The "Current Max out of Vss" is the sum of all sinking currents. Source current is the flowing (to an external circuit) when a pin is taken Sink current is the current flowing (from an external circuit) when a pin is The overall sink current is 150mA Vss and overall source current is and relates to the fact that there must be aĪsymmetrical architecture in the chip that can accept only the specifiedĬurrent. Supply Current (idle): 1mA Operational Current Max out of Vss 150mA Operational Current Max into Vdd 125mA Output current per pin 25mA Standby Current 1uA Operating temperature
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