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MCP23S18-E/SO

Name: MCP23S18-E/SO
Rating: 4.7 (12 reviews)

IC XPNDR 10MHZ SPI 28SOIC

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資料表 MCP23S18-E/SO DataSheet
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規格

Part Status	Active
Base Product Number	MCP23S18
DigiKey Programmable	Not Verified
Number of I/O	16
Interface	SPI
Interrupt Output	Yes
Output Type	Open Drain
Current - Output Source/Sink	25mA
Clock Frequency	10 MHz
Voltage - Supply	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package	28-SOIC (0.295", 7.50mm Width)
Supplier Device Package	28-SOIC
Packaging	Tube

概述

Description

The MCP23S18-E/SO is a 16-bit I/O expander from Microchip Technology, designed for applications requiring additional GPIO (General Purpose Input/Output) pins. It operates over an SPI (Serial Peripheral Interface) communication protocol, allowing for efficient data transfer between microcontrollers and the expander.
Key features include:
- 16 GPIO Pins: Configurable as input or output, enabling flexible usage in various applications.
- SPI Interface: Supports four different SPI modes, ensuring compatibility with various microcontrollers.
- Interrupt Capability: Allows for efficient monitoring of input changes, reducing the need for constant polling.
- Multiple Devices: Multiple MCP23S18 devices can be connected on the same SPI bus using different chip select lines.
- Wide Operating Voltage: Suitable for use in a range of voltage environments (1.8V to 5.5V).

The MCP23S18-E/SO is ideal for applications such as LED control, sensor interfacing, and expanding I/O capabilities in embedded systems.

Features

The MCP23S18-E/SO is a 16-bit I/O expander that communicates via the Serial Peripheral Interface (SPI). Key features include:
1. 16 GPIO Pins: Configurable as input or output for versatile applications.
2. SPI Interface: Supports 4-wire SPI communication with speeds up to 10 MHz.
3. Multiple Device Support: Allows connection of up to 8 devices on the same SPI bus using chip select lines.
4. Interrupt-on-Change: Supports interrupt generation on GPIO pin state changes for efficient monitoring.
5. Low Power Consumption: Designed for low-power applications, making it suitable for battery-operated devices.
6. Wide Operating Voltage: Operates from 1.8V to 5.5V, enhancing compatibility with various microcontrollers.
7. Internal Pull-ups: Each GPIO can be configured with internal pull-up resistors.
8. Hardware Addressing: Configurable hardware address pins for easy device selection.
This versatile device is ideal for applications requiring additional I/O while minimizing pin usage on microcontrollers.

Package

The MCP23S18-E/SO is packaged in a 28-pin SOIC (Small Outline Integrated Circuit) form factor. It features a narrow body and is designed for surface mounting.

Pinout

The MCP23S18-E/SO is a 16-bit I/O expander that communicates via the SPI (Serial Peripheral Interface) protocol. It features a total of 28 pins.
Pin Function Overview:
- I/O Pins (GP0 to GP15): 16 general-purpose I/O pins that can be configured as inputs or outputs.
- SCK (Serial Clock): SPI clock input.
- SI (Serial Input): SPI data input (MOSI).
- SO (Serial Output): SPI data output (MISO).
- CS (Chip Select): Active-low chip select input.
- RST (Reset): Active-low reset input.
- VDD: Supply voltage pin (typically 1.8V to 5.5V).
- VSS: Ground reference pin.
- INT (Interrupt): Interrupt output pin for signaling events such as a change in input state.
This configuration allows for versatile applications in expanding the number of I/O ports for microcontrollers.

Manufacturer

The MCP23S18-E/SO is manufactured by Microchip Technology Inc., a leading American supplier of microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, Microchip specializes in developing embedded control solutions for a variety of applications, including automotive, industrial, consumer, and communications. The MCP23S18 is a 16-bit I/O port expander that communicates with microcontrollers via the SPI (Serial Peripheral Interface) protocol, allowing for the expansion of GPIO capabilities in embedded systems. Microchip is known for its commitment to quality, innovation, and customer support, making it a prominent player in the semiconductor industry.

Application

The MCP23S18-E/SO is a 16-bit I/O expander with SPI interface, commonly used in embedded systems for applications like LED control, switch input reading, sensor interfacing, and GPIO expansion. It's ideal for microcontroller projects needing additional I/O pins while minimizing pin usage. Applications include industrial automation, home automation, robotics, and IoT devices, enhancing versatility in various electronic designs.

Equivalent

The MCP23S18-E/SO chip is a 16-bit I/O expander with SPI interface. Equivalent products include the MCP23S17, which offers similar functionality but with 16 I/O pins and a different SPI address capability. Other alternatives include the PCF8574 and PCF8575 series from NXP for I2C interfaces, and the 74HC595 shift register for serial-to-parallel conversion. Always check specifications for features and compatibility.