Overview
The MCP23017-E/SSVAO, manufactured by Microchip Technology, is a 16-bit I/O expander that facilitates parallel input/output expansion for microcontrollers via the I2C serial interface. This integrated circuit (IC) is widely used in embedded systems and microcontroller-based projects to extend the number of available GPIO pins. It offers a high degree of flexibility and configurability, making it a versatile solution for various applications.
Key Specifications
| Specification | Details |
|---|---|
| Package Type | SSOP-28, SOIC-28, SPDIP-28, QFN-28 |
| Number of GPIO Pins | 16 |
| Voltage Range | Typically 1.8V to 5.5V |
| I2C Interface Speed | 100 kHz, 400 kHz, and 1.7 MHz |
| Addressing | Three hardware address pins to allow up to eight devices on the bus |
| Standby Current | 1 µA (max.) |
| Operating Temperature | -40°C to +125°C |
| Programmable Pull-up Resistors | Available on each GPIO pin |
| Interrupt Output Pins | Configurable |
Key Features
- 16 GPIO pins that can be configured individually as inputs or outputs
- Bi-directional capability for flexibility in interfacing with peripherals and sensors
- High-speed I2C interface supporting 100 kHz, 400 kHz, and 1.7 MHz
- Wide voltage range: typically 1.8V to 5.5V
- Programmable pull-up resistors on each GPIO pin
- Three hardware address pins to allow up to eight devices on the bus
- Low standby current: 1 µA (max.)
- Configurable interrupt output pins
Applications
The MCP23017-E/SSVAO is suitable for expanding I/O capabilities in embedded systems and microcontroller-based projects. It is commonly used in applications such as:
- Expanding the number of input/output pins on microcontrollers
- Interfacing with various peripherals and sensors
- Simplifying circuit design in complex systems
Q & A
- What is the MCP23017-E/SSVAO used for?
The MCP23017-E/SSVAO is used to expand the number of input/output pins on microcontrollers via the I2C serial interface. - How many GPIO pins does the MCP23017-E/SSVAO have?
The MCP23017-E/SSVAO has 16 GPIO pins that can be configured individually as inputs or outputs. - What is the voltage range of the MCP23017-E/SSVAO?
The MCP23017-E/SSVAO operates within a voltage range of typically 1.8V to 5.5V. - What are the available package types for the MCP23017-E/SSVAO?
The MCP23017-E/SSVAO is available in SSOP-28, SOIC-28, SPDIP-28, and QFN-28 packages. - How does the MCP23017-E/SSVAO communicate with microcontrollers?
The MCP23017-E/SSVAO communicates with microcontrollers through the I2C serial interface, supporting speeds of 100 kHz, 400 kHz, and 1.7 MHz. - Can multiple MCP23017-E/SSVAO devices be connected to the same I2C bus?
Yes, up to eight devices can be connected to the same I2C bus using the three hardware address pins. - What is the standby current of the MCP23017-E/SSVAO?
The standby current of the MCP23017-E/SSVAO is 1 µA (max.). - Does the MCP23017-E/SSVAO have programmable pull-up resistors?
Yes, the MCP23017-E/SSVAO has programmable pull-up resistors on each GPIO pin. - How do I interface the MCP23017-E/SSVAO with an Arduino?
Connect the SDA and SCL pins of the MCP23017-E/SSVAO to the corresponding pins on the Arduino, ensure correct power supply connections, and verify the I2C communication using an I2C scanner sketch. - Are there any pin-to-pin compatible equivalents for the MCP23017-E/SSVAO?
No, there are no pin-to-pin compatible equivalents for the MCP23017-E/SSVAO, but alternatives like the MCP23S17 (which uses SPI instead of I2C) can be considered.
