產品說明0
DFR原廠 Gravity: MCP23017 I2C 16 Digital IO Expansion Module IO 擴展模塊（DFR626）
【SHIPPING LIST】
- Gravity: MCP23017 I2C 16 Digital IO Expansion Module x1
- Gravity-4P I2C/UART Wire x1
This is an IO expansion module that based on the chip MCP23017. The module can expand additional 16 IOs. It can set 8 I2C addresses, which means with this module, the microcontroller can connect 8 modules, and expand 128 IOs at most. The module solves insufficient IO ports problem in applications like robots and interactive medias.
This Gravity: MCP23017 I2C IO 16 digital IO expansion module has 2 groups of IO pins, GPIOA and GPIOB. Each group has 8 independent IO interfaces, and each IO interface can be set to input, output, pull-up input (connect to 100KΩ pull-up resistor), interrupt and so on.
Besides, the module has 2 interrupt signal pins: IA and IB. IA is used to detect the interruption in IO interfaces of GPIOA, and IB is used to detect the interruption in IO interfaces of GPIOB. When one pin of GPIOA or GPIOB interrupts, the corresponding IA or IB will produce a high-level signal.
此外，模塊還有2個中斷信號引腳：IA和IB。
＊IA 用於檢測 GPIOA 的 IO 接口中斷
＊IB 用於檢測 GPIOB 的 IO 接口中斷。
當GPIOA或GPIOB的某個引腳發生中斷時，對應的IA或IB會產生高電平信號。
【FEATURES／特徵】
- Supporting to expand 128 IOs at most
- Multiple IO mode
- Changeable I2C address by dial switch
- Multiple VCC and GND pins leaded
- Compatible with both 3.3V and 5V
【Scenarios／應用】
- Robots
- Interactive medias
- Light cube
【SPECIFICATION／規格】
- Operating Voltage: 3.3V~5.5V
- I2C Address: 0x20~0x27
- Digital Input/Output: 20Ma
- Signal Interrupt Pin: IA, IB
- Dimension: 44x32mm / 1.73x1.26inch
