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8-Bit I2C I/O Expander with Serial Interface
CAD Models Overview
- Max. Bus Frequency [kBits/s]:1700
- Operating Voltage [V] Max:5.5
- Operating Voltage [V] Min:1.8
- TempRange [°C] Max:125
- TempRange [°C] Min:-40
- 8-bit port expander with interrupt output
- 3 address inputs for up to 8 devices on one bus
- 25mA sink/source capability per I/O
- Supports 100kHz, 400kHz and 1.7MHz I2C™Compatible modes
- Internal power-on-reset (POR)
The MCP23X08 device provides 8-bit, general purpose, parallel I/O expansion for I2C bus or SPI applications. The two devices differ in the number of hardware address pins and the serial interface:
• MCP23008 – I2C interface; three address pins
• MCP23S08 – SPI interface; two address pins
The MCP23X08 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. 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.
• MCP23008 – I2C interface; three address pins
• MCP23S08 – SPI interface; two address pins
The MCP23X08 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. 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.
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Tools And Software
Demo & Evaluation Boards
3rd Party Tools
| Tools |
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 The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate the use of the MCP23S08/17 (SPI interface) and the MCP23008/17 (I2C interface) devices in a keypad and LCD example.
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| The MCP23X08 8-bit GPIO Expander Evaluation Board demonstrates simple input/output functionality of the MCP23008 (I2C interface) and the MCP23S08 (SPI interface).
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| The PICkit™ Serial I2C Demo Board was designed to easily connect to the PICkit Serial Analyzer (DV164122).
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| Tools |
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| Stepper 7 click is a bipolar step motor driver. It features an H-bridge bipolar step motor driver, which supports full and half step control modes. Stepper 7 click also carries a port expander so that the communication can be done with a minimal number of pins, through the mikroBUS™ SPI bus.
Stepper 7 click offers thermal protection, integrated kickback voltage protection, it has a wide range of input voltage, protection against current shoot-through the H-Bridge and reasonably high current capability. These features make Stepper 7 click an ideal solution for driving motors in any application that demands a precise and safe step motor driver. |
["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files:
spicemodels,Spice Models:
plecsmodels,PLECS Models: