最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

K4H561638M-TCA0 Datasheet

  • K4H561638M-TCA0

  • 128Mb DDR SDRAM

  • 53頁

  • SAMSUNG   SAMSUNG

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

128Mb DDR SDRAM
3.3.11 Read With Auto Precharge
If a read with auto-precharge command is initiated, the DDR SDRAM automatically enters the precharge
operation BL/2 clock later from a read with auto-precharge command when tRAS(min) is satisfied. If not, the
start point of precharge operation will be delayed until tRAS(min) is satisfied. Once the precharge operation
has started the bank cannot be reactivated and the new command can not be asserted until the precharge
time(tRP) has been satisfied.
< Burst Length=4, CAS Latency= 2, 2.5>
0
CK
CK
Command
DQS
CAS Latency=2
DQ
鈥瞫
DQS
CAS Latency=2.5
DQ
鈥瞫
Begin Auto-Precharge
Dout 0 Dout 1 Dout 2 Dout 3
Dout 0 Dout 1 Dout 2 Dout 3
BANK A
ACTIVE
NOP
READ A
Auto Precharge
NOP
NOP
NOP
NOP
NOP
NOP
1
2
3
4
5
6
7
8
t
RAS(min.)
t
RP
* Bank can be reactivated at the
completion of
precharge
Figure 19. Read with auto precharge timing
When the Read with Auto precharge command is issued, new command can be asserted at 3,4 and 5
respectively as follows,
Asserted
command
READ
READ+AP
Active
Precharge
*1
For same Bank
3
READ +
No AP
*1
READ +
AP
Illegal
Legal
4
READ+
No AP
READ +
AP
Illegal
Legal
5
Illegal
Illegal
Illegal
Illegal
3
Legal
Legal
Legal
Legal
For Different Bank
4
Legal
Legal
Legal
Legal
5
Legal
Legal
Legal
Legal
: AP = Auto Precharge
Table 6. Operating description when new command asserted
while read with auto precharge is issued
- 29 -
REV. 1.0 November. 2. 2000

K4H561638M-TCA0相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！