MCP23008-E/ML

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MCP23008-E/ML

IC I/O EXPANDER I2C 8B 20QFN

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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-VFQFN Exposed Pad

Vue d'ensemble

Description

The MCP23008-E/ML is a 16-pin I2C GPIO expander from Microchip Technology, designed to increase the number of input/output pins available on microcontrollers. It provides 8 additional GPIO pins, which can be configured as either inputs or outputs. The device communicates via the I2C interface, allowing multiple MCP23008 devices to be connected on the same bus, with addresses that can be set via external pins.
Key features include an integrated pull-up resistor for input pins, programmable interrupt functionality for change detection, and a wide operating voltage range (1.8V to 5.5V). The MCP23008 is ideal for applications requiring additional I/O, such as sensor interfacing, LED control, and keypad inputs, making it suitable for various embedded systems and IoT projects. Its compact size and low power consumption further enhance its appeal for space-constrained and battery-operated devices.

Features

The MCP23008-E/ML is an I2C I/O expander with the following key features:
1. Ports: It provides 8 GPIO pins that can be configured as inputs or outputs.
2. I2C Interface: Supports standard I2C communication with a 2-wire interface.
3. Addressing: Configurable address pins allow up to 8 devices on the same I2C bus.
4. Interrupt Support: Features interrupt-on-change functionality for input pins, enhancing responsiveness.
5. Pull-up Resistors: Internal pull-up resistors can be enabled for input pins.
6. Voltage Range: Operates over a wide voltage range from 1.8V to 5.5V.
7. Low Power Consumption: Designed for low-power applications, making it suitable for battery-operated devices.
8. Package Options: Available in a small 8-pin MSOP package, facilitating space-saving designs.
These features make the MCP23008-E/ML ideal for expanding GPIO capabilities in various embedded applications.

Package

The MCP23008-E/ML is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package) form factor. This compact package is suitable for space-constrained applications while providing GPIO expansion capabilities via I2C communication.

Pinout

The MCP23008-E/ML is an I/O expander that features a total of 8 pins dedicated to GPIO (General Purpose Input/Output) functions. It has a total of 8 I/O pins (GPIOA0 to GPIOA7) which can be configured as either inputs or outputs.
The device communicates with microcontrollers via the I2C interface, allowing multiple MCP23008 chips to be connected on the same bus. It requires only two pins for communication (SDA and SCL) in addition to power and ground.
The MCP23008 also includes a hardware reset pin, allowing the user to reset the device easily. The address selection pins (A0, A1, A2) allow up to eight devices to be connected on the same I2C bus by setting different I2C addresses.
In summary, the pin count is 8 GPIO pins, and the key functions include I/O expansion, I2C communication, and hardware reset capabilities.

Manufacturer

The MCP23008-E/ML is manufactured by Microchip Technology Inc., a publicly traded company based in the United States. Microchip specializes in microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, the company is known for its extensive range of embedded control products and development tools, serving various industries including automotive, industrial, consumer, and communications. They focus on providing high-performance, low-power solutions for designers looking to create innovative applications. The MCP23008-E/ML is an I/O expander with I2C interface, allowing for increased GPIO capabilities in embedded systems.

Application

The MCP23008-E/ML is an I/O expander that interfaces via I²C and provides 8 additional GPIO pins. Its application areas include expanding microcontroller I/O capabilities for sensors, displays, and controls in embedded systems, robotics, automation, and consumer electronics. It is useful in projects requiring multiple inputs/outputs, such as keypads, LED control, and interfacing with various peripherals in compact designs.

Equivalent

The MCP23008-E/ML is an I2C I/O expander with 8 bits of GPIO. Equivalent products include:
1. PCF8574 - 8-bit I/O expander, I2C.
2. MCP23017 - 16-bit I/O expander, I2C.
3. TCA9555 - 16-bit I/O expander, I2C.
4. MCP23S08 - 8-bit I/O expander, SPI.
These alternatives offer similar functionality but may have different features like the number of GPIO pins or communication protocols.

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