BUY MCP23017-E/SO https://www.utsource.net/itm/p/4690708.html
The MCP23017/MCP23S17 (MCP23X17) device family provides 16-bit, general purpose parallel I/O expansion for I2C bus or SPI applications. The two devices differ only in the serial interface: ? MCP23017 I2C interface ? MCP23S17 SPI interface The MCP23X17 consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B). The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.
Description: The MCP23017-E/SO is an I/O expander from Microchip that provides 16 additional I/O pins for a microcontroller. It is an I2C device that can be used to extend the number of I/O pins available on a microcontroller. Features: - 16-bit I/O port expander with I2C interface - Up to 8 MCP23017 devices can be connected to a single I2C bus - Supports up to 8 different I2C addresses - Interrupt output pin - Operating voltage range of 2.7V to 5.5V - Low power consumption Applications: - Automation and control systems - Home automation - Robotics - Industrial control systems - Security systems - Consumer electronics (For reference only)