Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube |
| ProductStatus | Active |
| NumberofI/O | 16 |
| Interface | I²C |
| InterruptOutput | Yes |
| Features | POR |
| OutputType | Push-Pull |
| Current-OutputSource/Sink | 25mA |
| ClockFrequency | 1.7 MHz |
| Voltage-Supply | 1.8V ~ 5.5V |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | 28-DIP (0.300, 7.62mm) |
Tổng quan
Description
The MCP23017-E/SP is a versatile I/O expander from Microchip Technology, designed to add more input/output (I/O) ports to microcontrollers, such as those used in Arduino or Raspberry Pi projects. It communicates via the I2C bus, allowing easy integration with existing systems. This chip provides 16 additional I/O pins, which can be configured as inputs or outputs, effectively doubling the I/O capability of a standard microcontroller.
Key features include an operating voltage range of 1.8V to 5.5V, making it suitable for a wide range of applications. It also offers interrupt capabilities for inputs, which can notify the microcontroller of state changes without continuous polling. The MCP23017-E/SP supports up to eight devices on the same I2C bus by using configurable address pins, allowing for substantial expansion.
Packaged in a 28-pin DIP, it's user-friendly for breadboard prototyping. The device is ideal for applications requiring expanded I/O, such as home automation, robotics, and other embedded systems, providing a cost-effective solution to I/O limitations.
Key features include an operating voltage range of 1.8V to 5.5V, making it suitable for a wide range of applications. It also offers interrupt capabilities for inputs, which can notify the microcontroller of state changes without continuous polling. The MCP23017-E/SP supports up to eight devices on the same I2C bus by using configurable address pins, allowing for substantial expansion.
Packaged in a 28-pin DIP, it's user-friendly for breadboard prototyping. The device is ideal for applications requiring expanded I/O, such as home automation, robotics, and other embedded systems, providing a cost-effective solution to I/O limitations.
Equivalent
The MCP23017-E/SP is a 16-bit I/O expander with an I2C interface. Equivalent products include the PCF8575 from NXP, the TCA9535 from Texas Instruments, and the PiPCA9555 from NXP. These alternatives provide similar functionality with differences in package types and additional features. Always check datasheets for compatibility regarding pin configuration, voltage levels, and other specific requirements.
Features
The MCP23017-E/SP is a 16-bit I/O expander with the following key features:
1. I2C Interface: It uses a standard I2C interface to communicate with microcontrollers, supporting speeds of up to 1.7 MHz.
2. 16 I/O Pins: Provides 16 general-purpose I/O pins organized into two 8-bit ports (Port A and Port B).
3. Interrupt Capability: Offers interrupt-on-change for each pin, with INTA and INTB pins for port-wide interrupt signaling.
4. Configurable Inputs/Outputs: Each I/O pin can be configured as an input or output, with support for internal pull-up resistors.
5. Addressable: Up to 8 devices can be connected on the same bus by setting different I2C addresses using three address pins.
6. Operating Voltage: Functions within a voltage range of 1.8V to 5.5V.
7. Low Standby Current: Features low standby current, suitable for battery-powered applications.
8. Package: Available in a 28-pin PDIP package, suitable for through-hole applications.
These features make the MCP23017-E/SP an ideal choice for expanding I/O capabilities of microcontroller-based systems.
1. I2C Interface: It uses a standard I2C interface to communicate with microcontrollers, supporting speeds of up to 1.7 MHz.
2. 16 I/O Pins: Provides 16 general-purpose I/O pins organized into two 8-bit ports (Port A and Port B).
3. Interrupt Capability: Offers interrupt-on-change for each pin, with INTA and INTB pins for port-wide interrupt signaling.
4. Configurable Inputs/Outputs: Each I/O pin can be configured as an input or output, with support for internal pull-up resistors.
5. Addressable: Up to 8 devices can be connected on the same bus by setting different I2C addresses using three address pins.
6. Operating Voltage: Functions within a voltage range of 1.8V to 5.5V.
7. Low Standby Current: Features low standby current, suitable for battery-powered applications.
8. Package: Available in a 28-pin PDIP package, suitable for through-hole applications.
These features make the MCP23017-E/SP an ideal choice for expanding I/O capabilities of microcontroller-based systems.
Pinout
The MCP23017-E/SP is a 16-bit I/O expander with an I²C interface. It is housed in a 28-pin DIP (Dual In-line Package). The pin count and functions are as follows:
1. Pins 1-3 (A0, A1, A2): Address pins for I²C addressing.
2. Pin 4 (RESET): Active-low reset input.
3. Pin 5 (INTB): Interrupt output for Port B.
4. Pin 6 (INTA): Interrupt output for Port A.
5. Pins 7-14 (GPA0-GPA7): General Purpose I/O pins for Port A.
6. Pins 15-22 (GPB0-GPB7): General Purpose I/O pins for Port B.
7. Pin 23 (VSS): Ground.
8. Pin 24 (SCL): I²C clock input.
9. Pin 25 (SDA): I²C data input/output.
10. Pin 26 (VDD): Positive supply voltage.
11. Pins 27-28 (NC): No connect, not used.
The MCP23017 allows for the expansion of I/O capabilities of microcontrollers using the I²C interface, providing additional pins for digital input/output applications.
1. Pins 1-3 (A0, A1, A2): Address pins for I²C addressing.
2. Pin 4 (RESET): Active-low reset input.
3. Pin 5 (INTB): Interrupt output for Port B.
4. Pin 6 (INTA): Interrupt output for Port A.
5. Pins 7-14 (GPA0-GPA7): General Purpose I/O pins for Port A.
6. Pins 15-22 (GPB0-GPB7): General Purpose I/O pins for Port B.
7. Pin 23 (VSS): Ground.
8. Pin 24 (SCL): I²C clock input.
9. Pin 25 (SDA): I²C data input/output.
10. Pin 26 (VDD): Positive supply voltage.
11. Pins 27-28 (NC): No connect, not used.
The MCP23017 allows for the expansion of I/O capabilities of microcontrollers using the I²C interface, providing additional pins for digital input/output applications.
Manufacturer
The MCP23017-E/SP is manufactured by Microchip Technology Inc. Microchip Technology is a publicly traded American company that specializes in the production and supply of microcontroller, mixed-signal, analog, and Flash-IP integrated circuits. Founded in 1989, the company is headquartered in Chandler, Arizona. It serves a wide array of industries including automotive, industrial, consumer, aerospace, and defense, among others. Microchip Technology is known for its comprehensive range of products that are crucial in embedded control applications, providing solutions that are used by engineers and designers worldwide.
Application
The MCP23017-E/SP is a versatile I/O expander used in applications requiring additional input/output pins. It is commonly found in microcontroller-based systems to enhance pin availability without increasing the microcontroller's package size. Key application areas include:
1. Home Automation: Controlling multiple devices or sensors via a single microcontroller.
2. Industrial Control Systems: Extending GPIO capabilities for machinery and process control.
3. Consumer Electronics: Used in devices requiring multiple user interface controls like buttons and LEDs.
4. Robotics: Managing motor drivers, sensors, and other peripherals.
5. IoT Devices: Facilitating communication between sensors and the main processor.
The MCP23017-E/SP interfaces using I2C, providing 16 additional GPIO pins.
1. Home Automation: Controlling multiple devices or sensors via a single microcontroller.
2. Industrial Control Systems: Extending GPIO capabilities for machinery and process control.
3. Consumer Electronics: Used in devices requiring multiple user interface controls like buttons and LEDs.
4. Robotics: Managing motor drivers, sensors, and other peripherals.
5. IoT Devices: Facilitating communication between sensors and the main processor.
The MCP23017-E/SP interfaces using I2C, providing 16 additional GPIO pins.
Package
The MCP23017-E/SP is a 28-pin PDIP (Plastic Dual In-line Package) package. It is commonly used for through-hole mounting in electronic circuits and features 16-bit I/O expansion via the I2C interface.
