MCP23008-E/SS

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MCP23008-E/SS

IC I/O EXPANDER I2C 8B 20SSOP

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Spécifications

Package Tube
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)

Vue d'ensemble

Description

The MCP23008-E/SS is an I²C I/O expander from Microchip Technology that provides 8 additional GPIO (General Purpose Input/Output) pins, allowing for easy expansion of microcontroller capabilities. It operates over the I²C bus, enabling multiple devices to connect using only two wires (SDA and SCL).
Key features include:
- 8 I/O Pins: Configurable as input or output, supporting both digital logic levels.
- Interrupts: Capable of signaling changes on input pins through an interrupt pin, enhancing responsiveness.
- Addressability: Multiple MCP23008 devices can be connected to the same I²C bus with different addresses, allowing for scalability.
- Pull-Up Resistors: Internal pull-up resistors can be enabled for input pins, simplifying circuit design.
- Voltage Range: Operates at a voltage range of 1.8V to 5.5V, making it suitable for various applications.
This chip is commonly used in embedded systems to increase the number of I/O points available for sensors, displays, and other peripherals.

Features

The MCP23008-E/SS is an I2C I/O expander from Microchip Technology, featuring eight general-purpose I/O pins. Key features include:
1. I2C Interface: Operates over the I2C bus, allowing for easy connection to microcontrollers.
2. 8 GPIO Pins: Configurable as inputs or outputs, enabling versatile usage for various applications.
3. Interrupt Capability: Supports interrupt-on-change functionality for efficient event handling.
4. Address Selection: Allows up to eight devices on the same I2C bus through configurable address pins (A0, A1, A2).
5. Voltage Range: Operates from 1.8V to 5.5V, making it suitable for low-voltage applications.
6. Internal Pull-Up Resistors: Built-in pull-up resistors for input pins simplify circuit design.
7. Low Power Consumption: Designed for low-power applications, enhancing battery life in portable devices.
8. Package Options: Available in various packages, including SSOP and DIP, for design flexibility.
These features make the MCP23008-E/SS ideal for expanding GPIO capabilities in embedded systems.

Package

The MCP23008-E/SS is packaged in a 8-pin SOIC (Small Outline Integrated Circuit) package. This surface-mount package allows for compact circuit designs and is suitable for various applications in electronic systems.

Pinout

The MCP23008-E/SS is a 8-bit I/O expander with an 8-pin package configuration (SS stands for Shrink Small Outline). It operates using I2C communication, allowing additional GPIO pins to be added to a microcontroller with limited I/O capabilities.
Pin Count and Functions:
1. VDD: Power supply pin.
2. VSS: Ground pin.
3. SDA: Serial Data Line for I2C communication.
4. SCL: Serial Clock Line for I2C communication.
5. GPIO0 to GPIO7: 8 general-purpose I/O pins that can be configured as inputs or outputs.
6. RESET: Reset pin to initialize the device.
7. A0/A1/A2: Address pins to set the I2C address of the device.
This expander enables the addition of 8 digital I/O lines, enhancing the versatility of microcontrollers in various applications.

Manufacturer

The MCP23008-E/SS is manufactured by Microchip Technology Inc. Microchip is a leading provider of microcontroller and analog semiconductors. The company specializes in developing microcontroller units (MCUs), digital signal controllers (DSCs), memory products, and various analog devices. Founded in 1989 and headquartered in Chandler, Arizona, Microchip serves a wide range of industries, including automotive, industrial, consumer, and communications. They are known for their commitment to providing innovative solutions for embedded systems and facilitating product design through a comprehensive portfolio of development tools and support resources.

Application

The MCP23008-E/SS is an I2C I/O expander that adds 8 additional GPIO pins to microcontrollers with limited I/O. Its application areas include embedded systems, sensor interfacing, LED control, keypad inputs, and managing multiple devices in robotics, automation, and home automation projects. It is commonly used in environments where space is limited and additional I/O is required without increasing the microcontroller's pin count.

Equivalent

Equivalent products to the MCP23008-E/SS chip include the PCF8574, MCP23017, and MCP23008. These chips also provide I/O expansion via I2C but may differ in functionality, pin count, or number of I/O pins. Always check specifications for compatibility with your application needs.

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