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Name: MCP23S17-E/SO
Brand: Microchip Technology
SKU: MCP23S17-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 MCP23S17-E/SO

Part No.:: MCP23S17-E/SO

Manufacturer:: Microchip Technology

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

Datasheet:: MCP23S17-E/SO.pdf

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

In Stock:: 2771

Quantity:: Add To Cart

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MCP23S17-E/SO Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Active
NumberofI/O:
16
Interface:
SPI
InterruptOutput:
Yes
Features:
POR
OutputType:
Push-Pull
Current-OutputSource/Sink:
25mA
ClockFrequency:
10 MHz
Voltage-Supply:
1.8V ~ 5.5V
OperatingTemperature:
-40°C ~ 125°C
MountingType:
Surface Mount

MCP23S17-E/SO this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP23S17-E/SO price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for MCP23S17-E/SO to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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MCP23S17-E/SO information

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MCP23S17-E/SO Typical application Circuitry

MCP23S17-E SO

The MCP23S17-E/SO is a 16-bit I/O expander that operates with the SPI protocol, offering a solution for systems in need of additional I/O ports.

Typical Applications

This chip shines in contexts like interactive interfaces, control panels, and systems where a significant number of I/O ports are indispensable, yet the main controller is limited in I/O pin availability.

Core Attributes

- I/O Expansion: It provides an additional 16 I/O pins.

- Communication Method: Utilizes the SPI protocol for effective communication.

- Operational Voltage Range: Functions typically between 1.8V and 5.5V.

- Form Factor: Comes in an SOIC package, facilitating easy integration.

Application Example: Interactive Control Panel

For an interactive control panel requiring numerous buttons and display elements, the MCP23S17-E/SO serves to efficiently extend the I/O capabilities of the primary controller.

Methodical Connection Steps

1. Powering the Device:

- Connection: Attach pin 9 (VDD) of the MCP23S17-E/SO to the control panel's power source.

- Voltage Matching: Ensure compatibility between the chip's operational voltage and the panel's power supply to avoid damage or erratic behaviors.

2. Ground Association:

- Connection: Integrate pin 10 (VSS) into the control panel's ground circuitry to create a common electrical reference throughout the system.

- Stability: This aids in ensuring stable and reliable circuit performance.

3. SPI Communication Configuration:

- Connection: Link pin 12 (SI) to the master device's MOSI and pin 14 (SO) to the MISO to ensure seamless SPI communication.

- Clarity: Properly laid out connections mitigate signal degradation and enhance communication clarity.

4. Chip Addressing:

- Connection: Utilize pins 15, 16, and 17 (A0, A1, A2) for specific addressing when multiple MCP23S17-E/SO chips are in use.

- Identification: Each chip should have a unique address to avoid communication conflicts.

5. I/O Pin Assignment:

- Connection: Pins 1 to 8 and 18 to 25 are connected to various elements like buttons and LEDs on the control panel.

- Mapping: Proper mapping and documentation of each connection are crucial for systematic control and troubleshooting.

Critical Considerations in Design

When deploying MCP23S17-E/SO, focus on these central aspects:

1. Signal Integrity:

- Quality: Ensure that the SPI communication lines are well-designed to avoid signal loss or distortion.

- Routing: Proper routing and potential use of pull-up or pull-down resistors can be considered to maintain signal quality.

2. EMI Concerns:

- Shielding: Incorporate appropriate shielding techniques to minimize electromagnetic interference, especially in dense control panel setups.

- Distance: Keep sensitive signals away from potential sources of interference.

3. Power Integrity:

- Stability: Design the power supply circuitry to be robust, ensuring that the MCP23S17-E/SO receives stable and clean power for optimal functionality.

- Protection: Implement protective elements to guard against surges and voltage spikes.

In the integration process of MCP23S17-E/SO into an interactive control panel, every connection detail, from power supply to signal integrity, is paramount. The meticulous adherence to these principles culminates in a control panel characterized by responsiveness, reliability, and adaptability, underscoring the indispensable role of this I/O expander in complex control interfaces.

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6. What is the process for return or replacement of MCP23S17-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.

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