Verilog HDL: Microcontroller I/O Expander

Recommended For:

  • Device: MAX3000

  • Quartus®: Unknown



This design example allows you to implement microcontroller I/O expansion in microcontroller- or microprocessor-based systems using 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 Intel® Design Example 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: