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Product description: Gravity - Expander MCP23017 I2C - 16 I/O - DFRobot DFR0626.
The MCP23017 output expander allows you to expand the system with an additional 16 I/O portsvia the I2C interface. It has a Gravity connector and standard goldpins. I2C address is set usingDIP switches.The outputs are divided intotwo sections: GPIOA and GPIOB. Each output also has a power section (VCC and GND). Using modules with MCP23017 circuits, the number of outputs can be extended up to a maximum of 128. 3.3 Vor 5 Vmodule supplied.
Expander of MCP23017 outputs with a wire.
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Arduino compatible product The manufacturer prepared auser guide andlibrary for Arduino users. |
Main features of the expander
- Supports up to a maximum of 128 I/O.
- Multiple I/O mode.
- I2C address can be changed via DIP switches.
- VCC and GND power section at each I/O output.
- Compatible with 3.3 V and 5 V.
Expander outputs MCP23017
The module with the MCP23017 expander communicates via the I2C interface. It can be supplied with both 3.3 V and 5 V.
| Pin | Symbol | Description |
|---|---|---|
| 1 | + / VCC | Supply voltage from 3.3 V to 5.5 V. |
| 2 | - GND | The weight of the system. |
| 3 | C | Clock line I2C. |
| 4 | D | I2C data line. |
| 5 | RST | Reset. |
| 6 | IA | Pin detecting GPIOA interruptions. |
| 7 | IB | GPIOB Interrupt Detection Pin. |
| 8 | PWR | Power status. |
| 9 | A0/A1/A2 | I2C address switch. |
Output expander specification MCP23017
- Power supply voltage: 3.3 V or 5 V
- System used: MCP23017
- Communication: I2C
- Address I2C: 0x20 to 0x27
- I/O current: 20 mA
- Signal breaks: IA, IB
- Number of exits: 16
- Dimensions: 44 x 32 mm
Useful links |
