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AN4011 - Choosing The Right Cypress Synchronous SRAM | サイプレス セミコンダクタ

AN4011 - Choosing The Right Cypress Synchronous SRAM

最終更新日: 
2021 年 3 月 02 日
バージョン: 
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AN4011 provides an overview of Standard Synchronous, NoBL¿, QDR®-II/II+, QDR-II+ Xtreme, DDR-II/II+, DDR-II+ Xtreme and QDR-IV SRAM's. Cypress currently manufactures several major Synchronous SRAM architectures. The purpose of this application note is to provide a means to determine which architecture is right for a particular application. A brief description of each architecture and comparison by address/data relationships and performance characteristics is also included.

AN4011 provides an overview of Standard Synchronous, NoBL, QDR®-II/II+, QDR-II+ Xtreme, DDR-II/II+, DDR-II+ Xtreme and QDR-IV SRAM's. Cypress currently manufactures several major Synchronous SRAM architectures. The purpose of this application note is to provide a means to determine which architecture is right for a particular application. A brief description of each architecture and comparison by address/data relationships and performance characteristics is also included.

The purpose of this application note is to provide a means to determine which architecture is right for a particular application. A brief description of each architecture and comparison by address/data relationships and performance characteristics is also included.

The table below shows the architecture comparison for the different options:                                                                            



パラメータ


Std. Sync


NoBLTM


DDR-II/DDR-II+


QDRTM-II/ QDRTM-II+


Data Rate


Single


Single


Double


Double


Data Bus


Common I/O


Common I/O


Common and Separate I/O


Separate I/O


VDD


3.3V/2.5V


3.3V/2.5V


1.8V


1.8V


VDDQ


LVTTL 3.3V/2.5V


LVTTL 3.3V/3.5V


HSTL (1.5V/1.8V)


HSTL (1.5V/1.8V)


Clock Frequency


250MHz


250MHz


333 MHz / 550 MHz


333 MHz / 550 MHz

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.

翻訳版のドキュメントは参照用です。設計開発に携わっている場合には、英語版のドキュメントを参照されることをお勧めします。