規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| NumberofI/O | 8 |
| 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 | Surface Mount |
| Package/Case | 20-SSOP (0.209, 5.30mm Width) |
概述
Description
The MCP23008T-E/SS is an I2C-compatible I/O expander produced by Microchip Technology. It provides eight additional GPIO pins for microcontrollers with limited I/O capabilities. Operating on a 1.8V to 5.5V supply voltage, it allows for versatile use in various voltage environments. The device features configurable pull-up resistors, interrupt outputs, and supports fast-mode plus I2C communication, with speeds up to 1.7 MHz.
The MCP23008T-E/SS offers individual control over each pin's direction, input polarity, and output state, making it suitable for applications like keypad interfacing, LED control, and sensor monitoring. The SOIC-18 package ensures a compact design, easy integration, and reliable performance in a range of electronic systems. Its low power consumption and robust design make it ideal for battery-operated devices and space-constrained applications.
Overall, the MCP23008T-E/SS extends the capabilities of microcontrollers, enhancing flexibility and functionality in embedded systems.
The MCP23008T-E/SS offers individual control over each pin's direction, input polarity, and output state, making it suitable for applications like keypad interfacing, LED control, and sensor monitoring. The SOIC-18 package ensures a compact design, easy integration, and reliable performance in a range of electronic systems. Its low power consumption and robust design make it ideal for battery-operated devices and space-constrained applications.
Overall, the MCP23008T-E/SS extends the capabilities of microcontrollers, enhancing flexibility and functionality in embedded systems.
Equivalent
The MCP23008T-E/SS is an 8-bit I/O expander with I²C interface. Equivalent products include the PCF8574 from NXP, PCA9554 from NXP, and TCA9554 from Texas Instruments. These alternatives also offer I²C interfaces and similar I/O expansion capabilities, making them suitable replacements in various applications. Always verify pin compatibility and electrical specifications when choosing an equivalent.
Features
The MCP23008T-E/SS is an 8-bit I/O expander with I2C interface designed by Microchip Technology. Key features include:
1. I2C Interface: Operates at standard (100 kHz), fast (400 kHz), and high-speed (1.7 MHz) I2C bus frequencies, making it compatible with a wide range of systems.
2. 8-Bit I/O Port: Provides 8 general-purpose input/output pins, which can be configured individually as input or output.
3. Interrupt Output: Includes interrupt-on-change feature for detecting input changes and generating an interrupt signal to a connected microcontroller.
4. 3.3V or 5V Operation: Supports a wide operating voltage range from 1.8V to 5.5V, offering flexibility for different power environments.
5. Low Standby Current: Features low power consumption, making it suitable for battery-operated applications.
6. Configurable Pull-Up Resistors: Internal pull-up resistors can be enabled on each pin to simplify circuit design.
7. Simple Addressing: Up to 8 devices can be connected on the same bus with unique addresses.
These features make the MCP23008T-E/SS ideal for expanding I/O capabilities in microcontroller-based systems.
1. I2C Interface: Operates at standard (100 kHz), fast (400 kHz), and high-speed (1.7 MHz) I2C bus frequencies, making it compatible with a wide range of systems.
2. 8-Bit I/O Port: Provides 8 general-purpose input/output pins, which can be configured individually as input or output.
3. Interrupt Output: Includes interrupt-on-change feature for detecting input changes and generating an interrupt signal to a connected microcontroller.
4. 3.3V or 5V Operation: Supports a wide operating voltage range from 1.8V to 5.5V, offering flexibility for different power environments.
5. Low Standby Current: Features low power consumption, making it suitable for battery-operated applications.
6. Configurable Pull-Up Resistors: Internal pull-up resistors can be enabled on each pin to simplify circuit design.
7. Simple Addressing: Up to 8 devices can be connected on the same bus with unique addresses.
These features make the MCP23008T-E/SS ideal for expanding I/O capabilities in microcontroller-based systems.
Pinout
The MCP23008T-E/SS is an 8-bit I/O expander with I2C interface, manufactured by Microchip Technology. It is housed in a 20-pin SSOP (Shrink Small Outline Package). Here is a brief overview of its pin count and functions:
1. Pins: The device has 20 pins.
2. Functionality:
- VDD (Pin 9): Power supply input.
- VSS (Pin 10): Ground reference.
- SCL (Pin 12): Serial Clock Line – used to synchronize data transfer over the I2C bus.
- SDA (Pin 13): Serial Data Line – used for data transfer on the I2C bus.
- INT (Pin 18): Interrupt output – active low, used to alert the microcontroller of a change on the monitored GPIO pins.
- Reset (Pin 14): Resets the device when pulled low.
- A0, A1, A2 (Pins 15-17): Address pins – used to configure the I2C address of the device.
- GP0-GP7 (Pins 1-8): General Purpose I/O pins – used to interface with the external world, configurable as inputs or outputs.
This device is used to expand the I/O capabilities of microcontrollers, allowing increased circuit interfacing within an I2C framework.
1. Pins: The device has 20 pins.
2. Functionality:
- VDD (Pin 9): Power supply input.
- VSS (Pin 10): Ground reference.
- SCL (Pin 12): Serial Clock Line – used to synchronize data transfer over the I2C bus.
- SDA (Pin 13): Serial Data Line – used for data transfer on the I2C bus.
- INT (Pin 18): Interrupt output – active low, used to alert the microcontroller of a change on the monitored GPIO pins.
- Reset (Pin 14): Resets the device when pulled low.
- A0, A1, A2 (Pins 15-17): Address pins – used to configure the I2C address of the device.
- GP0-GP7 (Pins 1-8): General Purpose I/O pins – used to interface with the external world, configurable as inputs or outputs.
This device is used to expand the I/O capabilities of microcontrollers, allowing increased circuit interfacing within an I2C framework.
Manufacturer
The MCP23008T-E/SS is manufactured by Microchip Technology Inc. Microchip Technology is an American company known for its production of microcontroller, mixed-signal, analog, and Flash-IP integrated circuits. It serves a wide range of industries by providing semiconductor products and solutions that are integral in the design and implementation of various electronic systems. The company is recognized for its reliable and innovative technology, which supports applications in consumer electronics, automotive, industrial, and communication sectors, among others.
Application
The MCP23008T-E/SS is an I/O expander that is commonly used in applications requiring additional GPIO pins. Key application areas include:
1. Embedded Systems: Enhancing microcontrollers with limited I/O by providing extra pins.
2. Consumer Electronics: Used in devices needing multiple peripherals, such as keypads or LEDs.
3. Industrial Automation: Facilitates control and monitoring of various devices like sensors and actuators.
4. Home Automation: Supports smart home devices by expanding I/O capabilities for control systems.
5. Prototyping and Development: Useful in development boards requiring flexible I/O configurations.
6. Communications Equipment: Assists in managing multiple signal lines efficiently.
1. Embedded Systems: Enhancing microcontrollers with limited I/O by providing extra pins.
2. Consumer Electronics: Used in devices needing multiple peripherals, such as keypads or LEDs.
3. Industrial Automation: Facilitates control and monitoring of various devices like sensors and actuators.
4. Home Automation: Supports smart home devices by expanding I/O capabilities for control systems.
5. Prototyping and Development: Useful in development boards requiring flexible I/O configurations.
6. Communications Equipment: Assists in managing multiple signal lines efficiently.
Package
The MCP23008T-E/SS is a 28-pin SSOP (Shrink Small Outline Package). It is part of the MCP23008 series, which is an I/O expander with an I2C interface, manufactured by Microchip Technology. The "T" in the part number typically indicates that the component is delivered in tape and reel packaging, suitable for automated assembly processes.