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The MCP23017 device family Provides 16-bit, general-purpose parallel I / O expansion for I2C bus applications. The two devices differentiate only in the serial interface.
The MCP23017 Consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I / Os as inputs or outputs by writing Either the I / O configuration bits (IODIRA / B). The data for each input or output is kept in the input or output CORRESPONDING 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. The 16-bit I / O port functionally Consists of two 8-bit ports (PORTA and PORTB). The MCP23X17 can be as configured to operate in the 8-bit or 16-bit modes via IOCON.BANK
Product Information
16BIT EXPANDER I / O I2C I / F, DIP28
Chip Configuration: 16 bit
Bus frequency: 1.7MHz
Interface Type: I2C serial
Digital IC Case Style: dip
Pins: 28
Number of I / Os: 16
Operating temperature: -40 ° C to +125 ° C.
Supply Voltage Range: 1.8V to 5.5V
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