External Memory Interface Handbook Volume 2: Design Guidelines

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ID 683385
Date 5/08/2017
Public
Document Table of Contents

11.2.1. DDR2 SDRAM Controller

The DDR2 SDRAM controller maintains up to eight open banks; one row in each bank is open at a time.

Maintaining more banks at one time helps avoid bank management commands. Ensure that you do not change a row in a bank frequently, because changing the row in a bank causes the bank to close and reopen to open another row in that bank.

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