External Memory Interface (EMIF) Spec Estimator

Archived external memory interface IP core specifications for previous version of Intel® Quartus® Prime Software are available on the below page:

Archived External Memory IP Specifications

Altera’s External Memory Interface Spec Estimator (“ESTIMATOR”) helps you to quickly estimate the right external memory clock rate support in Altera® devices based on your needs. This ESTIMATOR, which is a beta version, should only be used to obtain an initial estimation of external memory interface performance. A final determination of the external memory interface performance should be based on a complete design compiled and timing analyzed in Altera Quartus® Prime or Quartus II software.
 
PLEASE REVIEW THE FOLLOWING TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS ESTIMATOR. BY USING THIS ESTIMATOR, YOU INDICATE YOUR ACCEPTANCE OF THESE TERMS AND CONDITIONS, WHICH CONSTITUTE THE LICENSE AGREEMENT ("AGREEMENT") BETWEEN YOU AND ALTERA CORPORATION ("ALTERA") FOR USING THIS ESTIMATOR. IF YOU DO NOT AGREE WITH ANY OF THESE TERMS AND CONDITIONS, DO NOT USE THIS ESTIMATOR.
 
Subject to the terms and conditions of this Agreement, Altera grants to you a license to use this ESTIMATOR to obtain an initial estimation of external memory interface performance of an Altera programmable logic device-based design. You may not use this ESTIMATOR for any other purpose.
 
Altera does not guarantee or imply the reliability, serviceability or function of this ESTIMATOR. This ESTIMATOR is provided “AS IS”. ALTERA DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 
In no event shall the aggregate liability of Altera relating to this Agreement or the subject matter hereof under any legal theory (whether in tort, contract, or otherwise), exceed One US Dollar (US$1.00). In no event shall Altera be liable for any lost revenue, lost profits, or other consequential, indirect, or special damages caused by your use of this ESTIMATOR even if advised of the possibility of such damages.
 
This Agreement shall be governed by the laws of the State of California, without regard to conflict of law or choice of law principles. You agree to submit to the exclusive jurisdiction of the courts in the County of Santa Clara, State of California for the resolution of any dispute or claim arising out of or relating to this Agreement. The parties hereby agree that the party who is not the substantially prevailing party with respect to a dispute, claim, or controversy relating to this Agreement shall pay the costs actually incurred by the substantially prevailing party in relation to such dispute, claim, or controversy, including attorneys' fees.
 
BY USING THIS ESTIMATOR, YOU ACKNOWLEDGE THAT YOU HAVE READ THIS AGREEMENT, UNDERSTAND IT, AND AGREE TO BE BOUND BY ITS TERMS AND CONDITIONS. YOU AND ALTERA FURTHER AGREE THAT IT IS THE COMPLETE AND EXCLUSIVE STATEMENT OF THE AGREEMENT BETWEEN YOU AND ALTERA, WHICH SUPERSEDES ANY PROPOSAL OR PRIOR AGREEMENT, ORAL OR WRITTEN, AND ANY OTHER COMMUNICATIONS BETWEEN YOU AND ALTERA RELATING TO THE SUBJECT MATTER OF THIS AGREEMENT
 
External Memory Interface Spec Estimator License Agreement © 2025 Altera Corporation. All rights reserved.