MCP23008-E/SS

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MCP23008-E/SS

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IC I/O EXPANDER I2C 8B 20SSOP

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Thông số kỹ thuật

thuộc tính Giá trị
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)

Tổng quan

Description

The MCP23008-E/SS is an 8-bit I/O expander from Microchip Technology, designed to interface with microcontrollers using the I2C bus. It is part of the MCP23008 series, offering versatile I/O expansion with a simple communication protocol. The device features eight bidirectional I/O pins, which can be individually configured as input or output. Each pin also supports internal pull-up resistors and interrupt-on-change capabilities, enhancing its flexibility for various applications.
Operating at a voltage range of 1.8V to 5.5V, the MCP23008-E/SS is suitable for low-power applications. It features three address pins, allowing up to eight devices on the same I2C bus. The device offers a maximum clock frequency of 1.7 MHz and is available in an 18-pin SSOP package, making it compact and easy to integrate into existing designs.
The MCP23008-E/SS is widely used in consumer electronics, industrial automation, and home appliances, providing an efficient solution for expanding GPIO capabilities without additional complex circuitry.

Equivalent

The MCP23008-E/SS is an I2C I/O expander from Microchip Technology. Equivalent products include:
1. PCA9538 from NXP Semiconductors
2. PCF8574 from NXP Semiconductors
3. TCA9554 from Texas Instruments
4. SX1508B from Semtech
These alternatives offer similar functionalities for expanding I/O capabilities via the I2C interface. It's important to check each chip's specifications for pin compatibility and electrical characteristics to ensure suitability for your specific application.

Features

The MCP23008-E/SS is an I2C-compatible I/O expander from Microchip Technology. Key features include:
1. I2C Interface: Supports standard (100 kHz) and fast (400 kHz) I2C communication, allowing for easy integration with microcontrollers.
2. 8-Bit GPIO Port: Provides eight general-purpose input/output pins that can be individually configured as inputs or outputs.
3. Interrupt Output: Features an interrupt output pin that alerts the master device to changes on the input pins, enhancing event-driven applications.
4. Address Pins: Three address pins enable the connection of up to eight devices on the same I2C bus, offering flexibility in system design.
5. Internal Pull-Up Resistors: Optional internal pull-up resistors can be configured on each GPIO pin.
6. High-Speed Operation: Capable of operating at speeds up to 1.7 MHz using the high-speed I2C protocol.
7. Low Power Consumption: Designed for low power operation, suitable for battery-powered applications.
8. Wide Voltage Range: Operates between 1.8V and 5.5V, making it versatile for various systems.
These features make the MCP23008-E/SS ideal for expanding GPIO capabilities in embedded systems.

Pinout

The MCP23008-E/SS is an I2C-based I/O expander from Microchip Technology. It comes in an 18-pin SSOP (Shrink Small Outline Package) form factor. This device provides 8-bit, general-purpose, bidirectional I/O port expansion for microcontrollers via the I2C interface.
Here are the pin functions:
1. VDD: Power supply pin.
2. VSS: Ground pin.
3. SCL: Serial clock input for the I2C interface.
4. SDA: Serial data input/output for the I2C interface.
5. INT: Interrupt output that is activated when any input state changes.
6-8. A0, A1, A2: I2C device address pins, allowing up to 8 devices on the same bus.
9-16. GP0-GP7: General-purpose I/O pins.
17. RESET: Active-low reset input to reinitialize the device.
18. NC: No connection.
The MCP23008 provides a flexible and easy way to add more I/O to a microcontroller, which is especially useful in applications where I/O pin count is critical.

Manufacturer

The MCP23008-E/SS is manufactured by Microchip Technology Inc. Microchip Technology is an American company that specializes in the production of microcontroller, mixed-signal, analog, and Flash-IP integrated circuits. Its products are widely used in the automotive, industrial, consumer, aerospace and defense, communications, and computing markets. The company is known for providing reliable and cost-effective semiconductor solutions that help engineers and designers create innovative electronic products. Microchip Technology is headquartered in Chandler, Arizona, and operates globally, offering a wide range of products and support services to its customers.

Application

The MCP23008-E/SS is a versatile I/O expander used in various applications requiring additional I/O capabilities. Key application areas include:
1. Embedded Systems: Expands microcontroller I/O without consuming additional pins.
2. IoT Devices: Facilitates sensor and actuator interfacing in constrained devices.
3. Home Automation: Controls multiple inputs/outputs, such as switches and LEDs.
4. Industrial Automation: Interfaces with control systems for machinery and equipment.
5. Consumer Electronics: Supports button matrices and LED indicators.
6. Automotive Systems: Manages cabin controls and instrumentation.
7. Medical Devices: Provides flexible interfacing for monitoring and control systems.
Overall, it enhances flexibility and scalability in electronic design by expanding GPIO capabilities.

Package

The MCP23008-E/SS is an 18-pin SSOP (Shrink Small Outline Package). This package type is suitable for surface mounting on PCBs and offers a compact form factor for integrating the I/O expander into electronic designs.

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