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MCP23008-E/SS
+BOMIC I/O EXPANDER I2C 8B 20SSOP
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Nhà sản xuấtCông nghệ Microchip
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Ông. Phần #MCP23008-E/SS
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Bảng dữ liệu MCP23008-E/SS DataSheet
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Gói SSOP-20
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Có sẵn4994
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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
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
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
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
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
Application
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.