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MCP23017 is capable of converting 16-bit parallel data to serial data of the IIC interface and converting each other.

Features:
1.16-Bit Remote Bidirectional I/O Port.
2. Three Hardware Address Pins to Allow Up to Eight Devices On the Bus.
3. Configurable Interrupt Output Pins.
4. Configurable as active-high, active-low or open-drain.
5. INTA and INTB Can Be Configured to Operate Independently or Together.



Specifications:
Model: MCP23017
Material: Electrical components
Color: Black
Operating temperature range: -40~85 Degree
Working voltage: 1.8~5.5V
IIC communication frequency: up to 1.7MHz
Working current: 1uA
VCC: Power supply pin
INTA: A port interrupt output
INTB: B port terminal output
SCL: IIC clock signal line
SDA: IIC data signal line
RESET: level reset device
A0, A1, A2: IIC device address configuration pins
The default is 0100000x, and the IIC bus can expand 8 identical devices.
GPA0~GPA7: A port 8-bit input and output pin (default input mode)
GPB0~GPB7: B port 8-bit input and output pin (default input mode)