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Name: MCP23017-E/SO
Brand: Microchip Technology
SKU: MCP23017-E/SO
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Microchip Technology MCP23017-E/SO

Part No.:: MCP23017-E/SO

Manufacturer:: Microchip Technology

Package:: 28-SOIC (0.295, 7.50mm Width)

Datasheet:: MCP23017-E/SO.pdf

Description:: IC I/O EXPANDER I2C 16B 28SOIC

In Stock:: 3008

Quantity:: Add To Cart

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MCP23017-E/SO Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Active
NumberofI/O:
16
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

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MCP23017-E/SO information

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MCP23017-E/SO Typical application Circuitry

MCP23017-E SO

The MCP23017-E/SO is a 16-bit I/O expander, using the I2C protocol for communication, enabling the extension of the number of I/O pins available on a microcontroller or microprocessor.

Applications

This chip is commonly used in scenarios where additional I/O pins are required, particularly in applications like home automation systems, robotic control interfaces, and any complex system requiring a large number of input and output pins.

Key Specifications

- I/O Pins: 16 additional I/O pins

- Communication Protocol: I2C

- Voltage: Operates typically at 1.8V to 5.5V

- Package: SOIC surface mount package

Scenario: Home Automation System

In a home automation system, the MCP23017-E/SO can be used to control various sensors and actuators without overloading the main controller's I/O pins.

Detailed Connection Guide

1. Power Supply Connection: Pin 9 (VDD) of the MCP23017-E/SO is connected to the power supply. The voltage should align with the operating voltage of the microcontroller to ensure seamless communication.

2. Ground Configuration: Pin 10 (VSS) should be connected to the ground of the circuit. This establishes a common reference point for all voltage levels in the circuit.

3. I2C Communication Link: For data communication, connect pin 12 (SDA) to the SDA pin on the microcontroller and pin 13 (SCL) to the SCL pin on the microcontroller to facilitate the I2C communication protocol.

4. Address Configuration: Pins 15, 16, and 17 (A0, A1, A2) are used to set the address for the MCP23017-E/SO. By setting these pins either high or low, you can assign a unique address to each expander in cases where more than one is used.

5. Output/Input Pins Connection: Pins 1 to 8 and 18 to 25 (GPA0 to GPA7, GPB0 to GPB7) are the I/O pins. Connect these to the various sensors and actuators in the home automation system. Ensure that each connection aligns with the designated input or output function.

Considerations for Circuit Design

When incorporating MCP23017-E/SO into a design, focus on these critical aspects:

1. Signal Integrity: Ensure the I2C communication lines are of appropriate length and have pull-up resistors to maintain signal integrity.

2. Interference Management: Pay attention to potential electromagnetic interference in the environment, especially in a home automation setting with various electronic devices.

3. Power Supply Consistency: Ensure a stable and consistent power supply to the MCP23017-E/SO to maintain optimal performance and protect the chip from voltage fluctuations.

The incorporation of MCP23017-E/SO in a home automation system amplifies the system's flexibility and capability in handling multiple I/O tasks efficiently. By adhering to the outlined connection steps and keeping a vigilant eye on the highlighted design considerations, a robust, efficient, and versatile home automation system can be realized. This aligns with the evolving needs for enhanced control, responsiveness, and adaptability in modern smart homes.

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6. What is the process for return or replacement of MCP23017-E/SO?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of MCP23017-E/SO.

(3)The PartNo is unused and only in the original unpacked packaging.

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