MCP23008T-E/SSVAO

Product Overview

Category

The MCP23008T-E/SSVAO belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

• 8-bit I/O expander
• Compatible with most microcontrollers
• Low power consumption
• Wide operating voltage range
• Small package size

Package and Quantity

The MCP23008T-E/SSVAO is available in a small surface mount SSOP package. It is typically sold in reels or tubes containing multiple units.

Essence

The essence of the MCP23008T-E/SSVAO is its ability to provide additional I/O pins for microcontrollers, enabling them to interface with more peripheral devices.

Specifications

• Number of I/O Pins: 8
• Operating Voltage Range: 1.8V to 5.5V
• Maximum Output Current per Pin: 25mA
• Maximum Sink Current per Pin: 25mA
• Maximum Frequency: 10MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MCP23008T-E/SSVAO has a total of 20 pins. The pin configuration is as follows:

1. GPA0 (General Purpose I/O A0)
2. GPA1 (General Purpose I/O A1)
3. GPA2 (General Purpose I/O A2)
4. GPA3 (General Purpose I/O A3)
5. GPA4 (General Purpose I/O A4)
6. GPA5 (General Purpose I/O A5)
7. GPA6 (General Purpose I/O A6)
8. GPA7 (General Purpose I/O A7)
9. VDD (Power Supply)
10. VSS (Ground)
11. INTA (Interrupt Output A)
12. NC (No Connection)
13. SDA (Serial Data)
14. SCL (Serial Clock)
15. RESET (Reset Input)
16. GPB7 (General Purpose I/O B7)
17. GPB6 (General Purpose I/O B6)
18. GPB5 (General Purpose I/O B5)
19. GPB4 (General Purpose I/O B4)
20. GPB3 (General Purpose I/O B3)

Functional Features

• Bidirectional I/O pins
• Configurable interrupt output
• Hardware address pins for multiple device operation
• Internal pull-up resistors
• Software programmable I/O polarity inversion
• Interrupt-on-change feature

Advantages and Disadvantages

Advantages

• Provides additional I/O pins for microcontrollers with limited I/O capabilities
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range allows compatibility with various systems
• Small package size saves board space

Disadvantages

• Limited number of I/O pins compared to other expanders
• May require additional programming effort to utilize all features effectively

Working Principles

The MCP23008T-E/SSVAO works by communicating with a microcontroller through the I2C bus. It acts as an I/O expander, allowing the microcontroller to control and read the state of the 8 I/O pins. The device can be configured and controlled using software commands sent over the I2C interface.

Detailed Application Field Plans

The MCP23008T-E/SSVAO finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Robotics - Internet of Things (IoT) devices - Consumer electronics

Alternative Models

Some alternative models that offer similar functionality to the MCP23008T-E/SSVAO include: - MCP23017 - PCF8574 - MAX7311 - SX1509

These models provide different pin counts, package options, and additional features, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the MCP23008T-E/SSVAO is a versatile 8-bit I/O expander IC that offers additional I/O capabilities for microcontrollers. Its small size, low power consumption, and wide operating voltage range make it suitable for various applications in different fields. While it has some limitations in terms of pin count, it provides a cost-effective solution for expanding I/O capabilities in electronic devices.