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参数资料
| 型号： | DDRSDRAM1111 |
| 厂商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | DDR SDRAM Specification Version 1.0 |
| 中文描述： | DDR SDRAM的规范版本1.0 |
| 文件页数： | 30/53页 |
| 文件大小： | 669K |
| 代理商： | DDRSDRAM1111 |
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REV. 1.0 November. 2. 2000
128Mb DDR SDRAM
3.3.12 Write with Auto Precharge
If A10 is high when write command is issued , the write with auto-precharge function is performed. Any new
command to the same bank should not be issued until the internal precharge is completed. The internal pre-
charge begins after keeping tWR(min).
Command
< Burst Length=4 >
BANK A
ACTIVE
NOP
WRITE A
Auto Precharge
NOP
NOP
NOP
NOP
NOP
NOP
DQS
DQ
′
s
Din 0 Din 1 Din 2
Din 3
* completion of
t
RP
t
WR
t
RP
Internal precharge start
2
0
1
5
3
4
8
6
7
CK
CK
Figure 20. Write with auto precharge timing
Asserted
command
For same Bank
For Different Bank
3
4
5
6
7
8
3
4
5
6
7
WRITE
WRITE+
No AP
*1
WRITE+
No AP
WRITE+
No AP
Illegal
Illegal
Illegal
Legal
Legal
Legal
Legal
Legal
WRITE+
AP
WRITE+
AP
WRITE+
AP
WRITE+
AP
Illegal
Illegal
Illegal
Legal
Legal
Legal
Legal
Legal
READ
Illegal
READ+NO
AP+DM
*2
READ+NO
AP+DM
READ+
NO AP
READ+
NO AP
Illegal
Illegal
Illegal
Legal
Legal
Legal
READ+AP
Illegal
READ +
AP+DM
READ +
AP+DM
READ +
AP
READ +
AP
Illegal
Illegal
Illegal
Legal
Legal
Legal
Active
Illegal
Illegal
Illegal
Illegal
Illegal
Illegal
Legal
Legal
Legal
Legal
Legal
Precharge
Illegal
Illegal
Illegal
Illegal
Illegal
Illegal
Legal
Legal
Legal
Legal
Legal
*1
: AP = Auto Precharge
*2
: DM : Refer to "
3.3.7 Write Interrupted by a Read & DM "
in page 25.
Table 7. Operating description when new command asserted
while write with auto precharge is issued
Burst length = 4
相关PDF资料 |
PDF描述 |
|---|---|
| DDRSDRAM | DDR SDRAM Specification Version 0.61 |
| DDTA113TCA-7-F | PNP PRE-BIASED SMALL SIGNAL SOT-23 SURFACE MOUNT TRANSISTOR |
| DDTA114TCA-7-F | PNP PRE-BIASED SMALL SIGNAL SOT-23 SURFACE MOUNT TRANSISTOR |
| DDTA115TCA-7-F | PNP PRE-BIASED SMALL SIGNAL SOT-23 SURFACE MOUNT TRANSISTOR |
| DDTA123TCA-7-F | PNP PRE-BIASED SMALL SIGNAL SOT-23 SURFACE MOUNT TRANSISTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DDR-SJE-Q2 | 制造商:DOMINANT 制造商全称:DOMINANT Semiconductors 功能描述:LED Colored Resin |
| DDR-SJE-Q2R-1 | 制造商:DOMINANT 制造商全称:DOMINANT Semiconductors 功能描述:LED Colored Resin |
| DDR-SJE-R1 | 制造商:DOMINANT 制造商全称:DOMINANT Semiconductors 功能描述:LED Colored Resin |
| DDR-SJE-R2 | 制造商:DOMINANT 制造商全称:DOMINANT Semiconductors 功能描述:LED Colored Resin |
| DDR-SJS-R1 | 制造商:DOMINANT 制造商全称:DOMINANT Semiconductors 功能描述:LED AlInGaP |
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