This design example allows you to implement microcontroller I/O expansion in microcontroller- or microprocessor-based systems using Altera® MAX® 3000A devices.
The I/O expander design example includes four ports (A, B, C, and D) which can be independently programmed as I/O ports. You can connect the microcontroller unit (MCU) port to or from any port (A, B, C, or D) to perform read and write operations.
Download the Microcontroller I/O Expander design files:
The use of this design is governed by, and subject to, the terms and conditions of the Altera Hardware Reference Design License Agreement.
Figure 1. Block Diagram for Microcontroller I/O Expander Design Example in MAX 3000A Devices
For more information on using this example in your project, go to:
- AN 265: Using MAX 3000A Devices as a Microcontroller I/O Expander (PDF)
- How to Use Verilog HDL Examples
Design Examples Disclaimer
These design examples may only be used within Altera Corporation devices and remain the property of Altera. They are being provided on an “as-is” basis and as an accommodation; therefore, all warranties, representations, or guarantees of any kind (whether express, implied, or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
