Specifications
| Attribute | Value |
| Package | Tube |
| 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 |
| Package/Case | 28-SSOP (0.209, 5.30mm Width) |
Overview
Description
The MCP23S17-E/SS is a 16-bit I/O expander developed by Microchip Technology, featuring an SPI interface. It is designed to provide additional I/O ports for microcontrollers that have limited I/O pins. The device operates at a voltage range of 1.8V to 5.5V and supports both 10 MHz (at 5V) and 5 MHz (at 3.3V) SPI clock speeds, making it suitable for various applications.
The MCP23S17 supports features such as interrupt output pins for hardware event signaling and the capability to configure I/O pins as either inputs or outputs. It also allows for internal pull-up resistors and input polarity inversion. The device supports up to eight devices on the same bus by using hardware address pins, enabling the expansion of up to 128 I/O ports in a single system.
The MCP23S17-E/SS is housed in a 28-pin SSOP package, making it compact and suitable for space-constrained applications. Its versatility and ease of integration make it ideal for applications like industrial automation, consumer electronics, and home automation.
The MCP23S17 supports features such as interrupt output pins for hardware event signaling and the capability to configure I/O pins as either inputs or outputs. It also allows for internal pull-up resistors and input polarity inversion. The device supports up to eight devices on the same bus by using hardware address pins, enabling the expansion of up to 128 I/O ports in a single system.
The MCP23S17-E/SS is housed in a 28-pin SSOP package, making it compact and suitable for space-constrained applications. Its versatility and ease of integration make it ideal for applications like industrial automation, consumer electronics, and home automation.
Equivalent
The MCP23S17-E/SS is a 16-bit I/O expander with SPI interface. Equivalent products include:
1. MCP23017 – I2C version of the same chip.
2. PCF8575 – A 16-bit I/O expander with I2C interface from NXP.
3. MCP23S08 – 8-bit SPI I/O expander from Microchip.
4. SX1509 – A 16-bit I2C I/O expander from Semtech.
5. TCA9535 – A 16-bit I2C I/O expander from Texas Instruments.
These devices vary in interface type and some other specifications.
1. MCP23017 – I2C version of the same chip.
2. PCF8575 – A 16-bit I/O expander with I2C interface from NXP.
3. MCP23S08 – 8-bit SPI I/O expander from Microchip.
4. SX1509 – A 16-bit I2C I/O expander from Semtech.
5. TCA9535 – A 16-bit I2C I/O expander from Texas Instruments.
These devices vary in interface type and some other specifications.
Features
The MCP23S17-E/SS is a 16-bit I/O expander with SPI interface, manufactured by Microchip Technology. It operates at voltages from 1.8V to 5.5V, making it suitable for a wide range of applications. Key features include:
1. 16-Bit I/O Expansion: Provides 16 general-purpose I/O pins that can be configured as either inputs or outputs.
2. SPI Interface: Utilizes a high-speed SPI interface for communication, supporting data rates up to 10 MHz.
3. Interrupt Output: Offers interrupt capabilities with two interrupt pins (INTA and INTB) for monitoring changes on input pins.
4. Programmable Pull-ups: Each I/O pin can be configured with internal pull-up resistors.
5. I/O Polarity Inversion: Allows the polarity of the input pins to be inverted.
6. Multiple Addresses: Supports up to 8 devices on the same bus by configuring the hardware address pins.
7. High-Speed Operation: Features fast data transfer capabilities suitable for performance-critical applications.
8. Package: Available in a 28-pin SSOP package.
This device is ideal for applications requiring additional I/O ports, such as industrial automation, home automation, and other embedded systems.
1. 16-Bit I/O Expansion: Provides 16 general-purpose I/O pins that can be configured as either inputs or outputs.
2. SPI Interface: Utilizes a high-speed SPI interface for communication, supporting data rates up to 10 MHz.
3. Interrupt Output: Offers interrupt capabilities with two interrupt pins (INTA and INTB) for monitoring changes on input pins.
4. Programmable Pull-ups: Each I/O pin can be configured with internal pull-up resistors.
5. I/O Polarity Inversion: Allows the polarity of the input pins to be inverted.
6. Multiple Addresses: Supports up to 8 devices on the same bus by configuring the hardware address pins.
7. High-Speed Operation: Features fast data transfer capabilities suitable for performance-critical applications.
8. Package: Available in a 28-pin SSOP package.
This device is ideal for applications requiring additional I/O ports, such as industrial automation, home automation, and other embedded systems.
Pinout
The MCP23S17-E/SS is a 16-bit I/O expander with an SPI interface, featuring a 28-pin SSOP package. It is designed to provide additional I/O capabilities for microcontrollers via a serial peripheral interface (SPI). The pin count of the MCP23S17-E/SS is 28.
Key functions and pin assignments include:
1. Power and Ground Pins: VDD (power supply) and VSS (ground).
2. SPI Interface Pins:
- SCK (Serial Clock)
- SI (Serial Input)
- SO (Serial Output)
- CS (Chip Select)
3. I/O Ports:
- GPA0-GPA7 (Port A)
- GPB0-GPB7 (Port B)
4. Reset Pin:
- RESET (active-low reset)
5. Interrupt Pins:
- INTA and INTB (interrupt outputs for Port A and Port B)
6. Address Pins:
- A0, A1, A2 (device address pins for SPI communication)
These features enable the MCP23S17-E/SS to expand the number of I/O pins available for a microcontroller, facilitating easier integration of additional sensors, switches, LEDs, and other peripherals.
Key functions and pin assignments include:
1. Power and Ground Pins: VDD (power supply) and VSS (ground).
2. SPI Interface Pins:
- SCK (Serial Clock)
- SI (Serial Input)
- SO (Serial Output)
- CS (Chip Select)
3. I/O Ports:
- GPA0-GPA7 (Port A)
- GPB0-GPB7 (Port B)
4. Reset Pin:
- RESET (active-low reset)
5. Interrupt Pins:
- INTA and INTB (interrupt outputs for Port A and Port B)
6. Address Pins:
- A0, A1, A2 (device address pins for SPI communication)
These features enable the MCP23S17-E/SS to expand the number of I/O pins available for a microcontroller, facilitating easier integration of additional sensors, switches, LEDs, and other peripherals.
Manufacturer
The MCP23S17-E/SS is manufactured by Microchip Technology Inc. Microchip is a publicly traded American company that specializes in the production and development of microcontrollers, mixed-signal, analog devices, and Flash-IP integrated circuits. Established in 1989 and headquartered in Chandler, Arizona, Microchip serves a wide range of industries, including automotive, industrial, consumer, aerospace, and communications. The company is known for providing comprehensive, end-to-end solutions that include software, development tools, and reference designs, making it a leading player in the semiconductor industry.
Application
The MCP23S17-E/SS is a 16-bit I/O expander with SPI interface commonly used in applications requiring additional GPIOs. Its application areas include:
1. Embedded Systems: Enhances microcontroller GPIO capabilities in embedded designs.
2. Consumer Electronics: Provides flexible I/O expansion in devices like remote controls and gaming consoles.
3. Industrial Automation: Supports control and monitoring in automation systems and PLCs.
4. Home Automation: Used in smart home devices to manage multiple inputs/outputs.
5. Data Acquisition Systems: Facilitates additional sensor inputs.
6. Security Systems: Expands I/O for alarms and access control systems.
7. Automotive Electronics: Supports non-critical expansion in car infotainment and control systems.
Its versatility in handling I/O operations makes it suitable for diverse electronic projects and systems.
1. Embedded Systems: Enhances microcontroller GPIO capabilities in embedded designs.
2. Consumer Electronics: Provides flexible I/O expansion in devices like remote controls and gaming consoles.
3. Industrial Automation: Supports control and monitoring in automation systems and PLCs.
4. Home Automation: Used in smart home devices to manage multiple inputs/outputs.
5. Data Acquisition Systems: Facilitates additional sensor inputs.
6. Security Systems: Expands I/O for alarms and access control systems.
7. Automotive Electronics: Supports non-critical expansion in car infotainment and control systems.
Its versatility in handling I/O operations makes it suitable for diverse electronic projects and systems.
Package
The MCP23S17-E/SS is a 28-pin SSOP (Shrink Small Outline Package). It is a surface-mount package used for the MCP23S17, a 16-bit I/O expander with an SPI interface, produced by Microchip Technology.
