Description
Expander of pins on the basis of theMCP23017system, it extends the capabilities of the Arduino or Raspberry Pi with additional16 pins of I/O. It communicates viaI2Cinterface. The supply voltage is3.3 V or 5 V.
Key features
- Controlled via the I2C interface, expands 2 digital pins as 16 pins of I/O
- Configurable I2C address via jumpers A0 / A1 / A2
- Two connectors to connect: connector 6-pin 2 mm pitch or connector goldpin
- Works with a voltage of 3.3 V and 5 V
- Works with Arduino, Raspberry Pi, micro:bit, STM32, etc.
Pins
Board has a 6-pin connector with the wire in the kit. It communicates through an I2C interface.
| Pin | Description |
|---|---|
| VCC | Supply voltage of 3.3 V / 5 V. |
| GND | Ground of the system. |
| SDA | The pin ofdata of the I2C interface. |
| SCL | Clock pin of I2C interface. |
| INTA | External interrupts of group A. |
| INTB | External interrupts of group B. |
Specification
- Working voltage: 3.3 V or 5 V
- Interface: I2C
- External interrupts: INTA, INTB
- Number of extensions: 16 pins of I/O
- Dimensions: 38 x 23 mm
- The dimensions of the mounting holes: 3 mm
Useful links |
