<code id="3qubo"></code>
<code id="3qubo"><label id="3qubo"><dfn id="3qubo"></dfn></label></code>
    • <table id="3qubo"></table>
            


    
    



    

    
  
    
    
    
    
  
    
  
  

    





    


    
 
 




 
 


    

    
    


    參數(shù)資料
    

    


    


    
型號(hào)：
K4H1G3238D-TCA2

    

    
廠商：
SAMSUNG SEMICONDUCTOR CO. LTD.

    

    
英文描述：
128Mb DDR SDRAM

    

    
中文描述：
128MB DDR SDRAM的

    

    
文件頁(yè)數(shù)：
28/53頁(yè)

    

    
文件大小：
669K

    

    
代理商：
K4H1G3238D-TCA2


    

    

    

	
    
    
    

    
    
	
    -  28  -
    REV. 1.0 November. 2. 2000
    128Mb DDR SDRAM
    3.3.10 DM masking
    The DDR SDRAM has a data mask function that can be used in conjunction with data write cycle, not read
    cycle. When the data mask is activated (DM high) during write operation, DDR SDRAM does not accept the
    corresponding data.(DM to data-mask  latency is zero).
    DM must be issued at the rising or falling edge of data strobe.
    Command
    < Burst Length=8 >
    WRITE
    NOP
    NOP
    NOP
    NOP
    NOP
    NOP
    NOP
    NOP
    DQS
    DQ
     ′
    s
    Din 0
    Din 1
    Din 2
    Din 3
    t
    DQSS
    DM
    Din 4
    Din 5
    Din 6
    Din7
    masked by DM=H
    2
    0
    1
    5
    3
    4
    8
    6
    7
    CK
    CK
    6.   When terminating a burst Read command, the BST command must be issued L
    BST
     (“BST Latency”) clock 
    cycles before the clock edge at which the output buffers are tristated, where L
    BST
     equals the CAS latency 
    for read operations.  This is shown in previous page Figure with examples for CAS latency (CL) of 1.5, 2, 
    2.5, 3 and 3.5 (only selected CAS latencies are required by the DDR SDRAM standards, the others are 
    optional).
    7.   When the burst terminates, the DQ and DQS pins are tristated.
    The BST command is not byte controllable and applies to all bits in the DQ data word and the(all) DQS pin(s).
    Figure 18. DM masking timing
    
    
    
    
    
    


    


    

    相關(guān)PDF資料
    		

    PDF描述
    		

    
    

    
K4H1G3238D-TCB0
128Mb DDR SDRAM

    

    
K4H1G3238D-TLA0
128Mb DDR SDRAM

    

    
K4H1G3238D-TLA2
128Mb DDR SDRAM

    

    
K4H280838A-TCA2
128Mb DDR SDRAM

    

    
K4H280838A-TCB0
128Mb DDR SDRAM

    

    

    

    


    


    

    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
K4H1G3238D-TCB0
 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM

    

    
K4H1G3238D-TLA0
 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM

    

    
K4H1G3238D-TLA2
 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM

    

    
K4H1G3238D-TLB0
 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM

    

    
K4H1G3238E-TCA0
 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mb DDR SDRAM

    

    
    
    
    
	
    	
    
    
     
     
    發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
    
 
     
    

   	  
    
     

    
                    			    				      
    
                
    
                  
    
                    
                    
    
                      
    
                      
                      
    采購(gòu)需求
      (若只采購(gòu)一條型號(hào)，填寫一行即可)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                      
                      
    發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)
    
                       
                        
    
                                
                                
    
                                    *型號(hào)
                                    *數(shù)量
                                    廠商
                                    批號(hào)
                                    封裝
                                  
    
                                    
                                
                                
    
                                    
                                        
    
                                            
                                            
                                        
    
                                        		
                                     
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                    
                                        
    
                                        		
                                  
    
                                  
                                   
                                    
                            
    
                             
                             
							                            
    
                          添加更多采購(gòu)
    
                      
    
                      
                      
    
                      
                      
    我的聯(lián)系方式
    
                     
                     
                       
    
                                
                                
                                
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                        
                                    
                                    
                                  
    
                                  
                                  
    
                                    
                                         *