SDRAM從發(fā)展到現(xiàn)在已經(jīng)經(jīng)歷了五代,分別是:第一代SDR SDRAM,第二代DDR SDRAM,第三代DDR2 SDRAM,第四代DDR3 SDRAM,第五代,DDR4 SDRAM。第二,三,四代DDR(Double Data Rate)內(nèi)存則采用數(shù)據(jù)讀寫速率作為命名標(biāo)準(zhǔn),并且在前面加上表示其DDR代數(shù)的符號,PC-即DDR,PC2=DDR2,PC3=DDR3。如PC2700是DDR333,其工作頻率是333/2=166MHz,2700表示帶寬為2.7G。DDR的讀寫頻率從DDR200到DDR400,DDR2從DDR2-400到DDR2-800,DDR3從DDR3-800到DDR3-1600。    
 
    
ISSI 是Integrated Silicon Solution, Inc.縮寫。1988年成立,專門設(shè)計、開發(fā)、銷售高性能存儲半導(dǎo)體產(chǎn)品,用于Internet存儲器件、網(wǎng)絡(luò)設(shè)備、遠(yuǎn)程通訊和移動通訊設(shè)備、計算機(jī)外設(shè)等。
        公司的客戶都是一些電子工業(yè)巨頭,如3Com, Alcatel, Cisco, Ericsson, Hewlett Packard, IBM, Lexmark, Motorola, Nokia, Seagate等公司。ISSI是國際化大公司,公司總部設(shè)在美國加州Santa Clara,在美國、歐洲擁有分公司,在臺灣有合資企業(yè),在中國香港設(shè)有子公司,銷售辦事處分布在美國、歐洲、香港、中國、臺灣、日本。ISSI 用0.25微米工藝技術(shù)生產(chǎn)最新進(jìn)的SRAM產(chǎn)品,產(chǎn)品都是由代工服務(wù)商代為生產(chǎn),臺灣的TSMC、UMC、新加坡的Chartered Semiconductor都是它的合作伙伴。
 
                                                                                    
    
    
        
            
                                | Density | 
                                Org. | 
                                Part Number  | 
                                Type  | 
                                Vcc  | 
                                Refsh  | 
                                Speed  | 
                                Pkg(Pins)  | 
                                PDF下載 | 
            
                                    
                                | 2Gb | 
                                256Mx8  | 
                                IS43DR82560B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400 | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                256Mx8  | 
                                IS43DR82560C  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS43DR16128A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                667,533,333  | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS43DR16128B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS43DR16128C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                256Mx8  | 
                                IS46DR82560B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                256Mx8  | 
                                IS46DR82560C  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS46DR16128A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                667,533,400  | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS46DR16128B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 2Gb | 
                                128Mx16  | 
                                IS46DR16128C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                128Mx8  | 
                                IS43DR81280B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb  | 
                                128Mx8  | 
                                IS43DR81280C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                64Mx16  | 
                                IS43DR16640B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                64Mx16  | 
                                IS43DR16640C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                128x8  | 
                                IS46DR81280B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                128Mx8  | 
                                IS46DR81280C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                64Mx16  | 
                                IS46DR16640B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                64Mx16  | 
                                IS46DR16640C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 1Gb | 
                                64Mx16  | 
                                IS43DR16640  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS43DR86400C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS43DR86400D  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS43DR86400E  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS43DR16320C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS43DR16320D  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS43DR16320E  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                16Mx32 | 
                                IS43DR32160C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(126)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS46DR86400C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS46DR86400D  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                64Mx8  | 
                                IS46DR86400E  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(60)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS46DR16320C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS46DR16320D  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS46DR16320E  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                16Mx32 | 
                                IS46DR32160C  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(126)  | 
                                
                    暫無                 | 
            
                                    
                                | 512Mb | 
                                32Mx16  | 
                                IS43DR16320  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533  | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                16Mx16  | 
                                IS43DR16160B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                WBGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                8Mx32  | 
                                IS43DR32801B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(126)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                16Mx16 | 
                                IS46DR16160B  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                WBGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                8Mx32  | 
                                IS46DR32801B  | 
                                DDR2   | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(126)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                16Mx16 | 
                                IS43DR16160A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                800,667,533,400   | 
                                BGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                8Mx32  | 
                                IS43DR32801A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                533,400  | 
                                BGA(126)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                16Mx16 | 
                                IS46DR16160A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                533,400  | 
                                WBGA(84)  | 
                                
                    暫無                 | 
            
                                    
                                | 256Mb | 
                                8Mx32  | 
                                IS46DR32801A  | 
                                DDR2  | 
                                1.8V  | 
                                8K  | 
                                400 | 
                                BGA(126)  | 
                                
                    暫無                 |