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參數(shù)資料
| 型號： | K4H1G0438M-UCB0 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 1Gb M-die DDR SDRAM Specification 66 TSOP-II with Pb-Free (RoHS compliant) |
| 中文描述： | 1Gb的的M -模與鉛DDR SDRAM的規(guī)格66 TSOP-II免費（符合RoHS） |
| 文件頁數(shù)： | 21/53頁 |
| 文件大?。?/td> | 669K |
| 代理商： | K4H1G0438M-UCB0 |
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REV. 1.0 November. 2. 2000
128Mb DDR SDRAM
3.3.2 Burst Write Operation
The Burst Write command is issued by having CS, CAS, and WE low while holding RAS high at the rising
edge of the clock(CK). The address inputs determine the starting column address. There is no write latency
relative to DQS required for burst write cycle. The first data of a burst write cycle must be applied on the DQ
pins tDS(Data-in setup time) prior to data strobe edge enabled after tDQSS from the rising edge of the
clock(CK) that the write command is issued. The remaining data inputs must be supplied on each subsequent
falling and rising edge of Data Strobe until the burst length is completed. When the burst has been finished, any
additional data supplied to the DQ pins will be ignored.
Figure 10. Burst write operation timing
1. The specific requirement is that DQS be valid(High or Low) on or before this CK edge. The case shown
(DQS going from High_Z to logic Low) applies when no writes were previously in progress on the bus.
If a previous write was in progress, DQS could be High at this time, depending on tDQSS.
*1
Command
< Burst Length=4 >
NOP
WRITEA
NOP
NOP
NOP
WRITEB
NOP
NOP
NOP
DQS
DQ
′
s
Din 3
Din 0 Din 1
Din 2
t
DQSSmax
2
0
1
5
3
4
8
6
7
t
WPRES*1
CK
CK
Din 3
Din 0
Din 1
Din 2
*1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| K4H1G0438M-UCB3 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:1Gb M-die DDR SDRAM Specification 66 TSOP-II with Pb-Free (RoHS compliant) |
| K4H1G0438M-ULA2 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:1Gb M-die DDR SDRAM Specification 66 TSOP-II with Pb-Free (RoHS compliant) |
| K4H1G0438M-ULB0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:1Gb M-die DDR SDRAM Specification 66 TSOP-II with Pb-Free (RoHS compliant) |
| K4H1G0438M-ULB3 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:1Gb M-die DDR SDRAM Specification 66 TSOP-II with Pb-Free (RoHS compliant) |
| K4H1G0638C | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:Stacked 1Gb C-die DDR SDRAM Specification |
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