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QDR™II SRAM
- DDR II SRAM
- QDR™ II SRAM
Overview
QDR is an SRAM that is equipped with a data input pin and a data output pin separately, while a standard SRAM has a common pin for data input and output. QDR runs data input and output at double data rate (DDR), enabling ultra-high-speed operation through simultaneous data reading and writing. It gives the highest performance when reading and writing data alternately.
This memory is ideal for use in next-generation high-performance network switches, routers, etc.
Features
Data transfer rate of up to 36Gbps (250MHz, 36 I/O)
Wide data valid period facilitating system design
Product lineup for both Commercial*1 and Industrial*2 operating ambient temperature range.
Note(*)
- TA=0 to +70°C
- TA= -40 to +85°C
Lineup
QDR II SRAM, DDR II SRAM,QDR II+ SRAM, DDR II+ SRAM, Lineup and Migration
- Please consult with our sales offices for support and development status of each product.
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Note(*)
- µPD44165xx2A and µPD44165xx4A are upward compatible with µPD44165xx2 and µPD44165xx4, respectively. µPD44165xx2A and µPD44165xx4A are recommended for new designs. These products are planned to be consolidated to µPD44165xx2A and µPD44165xx4A.
- 18M density products with 2M x9 organization are µPD44165092A and µPD44165094A.
Related Document
User's manual
439KB)
QDR RAMs and Quad Data Rate RAMs comprise a new series of products developed by Cypress Semiconductor, Renesas, IDT, NEC Electronics and Samsung.
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