AN 265: Using Altera MAX Series as Microcontroller I/O Expanders

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ID 683386
Date 9/22/2014
Public
Document Table of Contents
Document Table of Contents x
1. Using Altera MAX Series as Microcontroller I/O Expanders
1. Using Altera MAX Series as Microcontroller I/O Expanders x
1.1. Advantages of Using Altera Devices as I/O Expanders 1.2. Microcontroller I/O Expander Implementation 1.3. Microcontroller I/O Expander Configuration 1.4. Resource Usage in Microcontroller I/O Expander Target Devices 1.5. Microcontroller I/O Expander Design Verification 1.6. Microcontroller I/O Expander Application 1.7. Document Revision History
1.2. Microcontroller I/O Expander Implementation x
1.2.1. Pin Functions in the Microcontroller I/O Expander 1.2.2. Functional Description of the Microcontroller I/O Expander
1.5. Microcontroller I/O Expander Design Verification x
1.5.1. Simulating Microcontroller I/O Expander Write Mode Timing 1.5.2. Simulating Microcontroller I/O Expander Read Mode Timing
1. Using Altera MAX Series as Microcontroller I/O Expanders

1. Using Altera MAX Series as Microcontroller I/O Expanders

Many microcontroller and microprocessor chips limit the available I/O ports and pins to conserve pin counts and reduce package sizes. In designs that use these limited chips, you can use the Altera devices to implement I/O expanders. Using this method, you can increase the number of I/O pins without changing the microcontrollers or microprocessors in the design.

The design example in this document shows the method to implement microcontroller I/O expanders using these Altera devices:

  • MAX® 10 FPGA
  • MAX V
  • MAX II
  • MAX 3000A

Section Content
Advantages of Using Altera Devices as I/O Expanders
Microcontroller I/O Expander Implementation
Microcontroller I/O Expander Configuration
Resource Usage in Microcontroller I/O Expander Target Devices
Microcontroller I/O Expander Design Verification
Microcontroller I/O Expander Application
Document Revision History

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