A simple SPI port expander | Mbed
Nettigo: MCP23S08-E/P - 8-bit SPI I/O expander
MCP23S17 16-Bit I/O Expander SPI - ProtoSupplies
7I50 SPI I/O expander
I²C and SPI GPIO Expanders - Exar Corporation | DigiKey
MCP23S17 I/O expander as SPI CS pin selector issue - LEDs and Multiplexing - Arduino Forum
MCP23017 serial Interface module IIC I2C 16-bit I/O expander pins 10MH – eElectronicParts
IO expander board - Electronics-Lab.com
Mcp23017 Serial Interface Module Iic I2c Spi Mcp23s17 Bidirectional 16-bit I/o Expander Pins 10mhz Serial Interface Module - Replacement Parts - AliExpress
Quad port expander simplifies PCB layout for high-speed interfaces
Using Multiple IO Expander MCP23S08 Address Issue - Networking, Protocols, and Devices - Arduino Forum
$3.29 - 16 Port Expander: SPI MCP23S17 - Tinkersphere
![chip-hold]MCP23017 IIC to 16CH GPIO Expander Board - ElectroDragon](https://s5.electrodragon.com/wp-content/uploads/2019/10/MCP23017-IIC-to-16CH-GPIO-Expander-01.jpg "chip-hold]MCP23017 IIC to 16CH GPIO Expander Board - ElectroDragon")
chip-hold]MCP23017 IIC to 16CH GPIO Expander Board - ElectroDragon
Port Expanders Extend MCU Functionality | DigiKey
PIM517 IO Expander Breakout Board - Pimoroni | Mouser
8-Bit I/O Expander with SPI Interface - EEWeb
MikroElektronika - Port Expander Board - MCP23S17 Development Tool
Port Expander ece4760
8-bit I/O Expander with I2C-Bus/SPI Interface - EEWeb
/i/52501/products/2014-05-17T12%3A37%3A57.763Z-MiniPiio%20DIO16%20Kit.jpg?1606306133 "Raspberry PIIO - DIO16 16ch SPI Port Expander Kit from DTRONIXS on Tindie")
Raspberry PIIO - DIO16 16ch SPI Port Expander Kit from DTRONIXS on Tindie
$2.69 - 8 Port Expander: SPI MCP23S08 - Tinkersphere
MAX7301AAX+T - Analog Devices - I/O Expander, 26 MHz, SPI
MCP23017 Serial Interface Module IIC I2C SPI MCP23S17 Bidirectional 16 Bit I/O Expander Pins 10Mhz Serial Interface Module|module i2c|c c - AliExpress
PIC32MX and Microchip MCP23S17 I/O Expander SPI Communications
Microchip MCP23S17 16-bit SPI Port Expander IC — PMD Way
