View source for Microchip MCP230S08 GPIO (SPI)

[[Image:TArduinoMCP230S08.png]]

== Summary ==  
SPI-controlled GPIO expander with 8 channels, configurable as inputs or outputs with optional pull-up resistors.  

== Description ==  
The **MCP230S08** component provides 8 GPIO channels accessible over SPI.  
Each channel can be individually configured as a digital input or output, with optional pull-up resistors.  
This component is ideal for expanding the number of digital I/O pins on a microcontroller, controlling LEDs, buttons, or other digital devices.  

<b>Diagram:</b>  

[[Image:TArduinoMCP230S08.Preview.png]]

== Categories ==  
*[[Image:TArduinoSPICategory.png]] [[Category SPI]] – Components controlled via SPI bus.  
*[[Image:TArduinoDigitalCategory.png]] [[Category Digital]] – Components handling digital logic signals.  

== Properties ==  
*'''SPISpeed''' – SPI communication speed in Hz (default 8,000,000).  

=== Channel Properties ===  
Each channel (Channel[0] to Channel[7]) has the following properties:  
*'''Auto Config''' – Automatically configure channel at startup.  
*'''Initial Value''' – Default digital value (boolean).  
*'''Is Output''' – Configure the channel as digital output (otherwise input).  
*'''Is Pull Up''' – Enable internal pull-up resistor for the channel.  

== Pins ==  

{| class="wikitable"
! Channel !! Digital Input !! Digital Output
|-
| Channel[0] || In (Digital) || Out
|-
| Channel[1] || In (Digital) || Out
|-
| Channel[2] || In (Digital) || Out
|-
| Channel[3] || In (Digital) || Out
|-
| Channel[4] || In (Digital) || Out
|-
| Channel[5] || In (Digital) || Out
|-
| Channel[6] || In (Digital) || Out
|-
| Channel[7] || In (Digital) || Out
|}

=== SPI Pins ===  
*'''Out (SPI)''' – SPI communication pin.  
*'''Chip Select (digital)''' – SPI chip select pin for selecting the MCP230S08 device.  

[[Category:Components]]