- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370740 > HY5PS12423LF 128Mx4|1.8V|8K|D43/D44/D54/D55|DDR II SDRAM - 512M PDF資料下載
參數(shù)資料
| 型號： | HY5PS12423LF |
| 英文描述： | 128Mx4|1.8V|8K|D43/D44/D54/D55|DDR II SDRAM - 512M |
| 中文描述： | 128Mx4 | 1.8 | 8K的| D43/D44/D54/D55 |的DDR II內(nèi)存- 512M |
| 文件頁數(shù)： | 54/66頁 |
| 文件大?。?/td> | 862K |
| 代理商： | HY5PS12423LF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁當前第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁
Rev. 0.52/Nov. 02 54
HY5PS12423(L)F
HY5PS12823(L)F
HY5PS121623(L)F
Auto Refresh
Auto refresh command executes refresh operation with internal address increment. Auto refresh command is issued by
activating CS, RAS, CAS and deactivating WE at the rising edge of clock. NOP cycle must be inserted during the entire
auto refresh cycle time defined by tRFC. On chip refresh counter is incremented during each refresh cycle. Auto
refresh command must be issued each time a refresh is required. The 512Mb DDR-II SDRAM requires auto refresh
cycles at an average periodic interval of 7.8 us (maximum) and support internal multi-row refresh operation, which
means one auto refresh command executes two internal refresh cycle during tRFC cycle. To allow for improved effi-
ciency in scheduling and switching between tasks, some flexibility in the absolute refresh interval is provided. But, a
maximum of eight auto refresh commands can be posted. Before entering Auto Refresh mode, all banks must be in a
precharge state and Auto refresh command can be issued after tRP period from precharge all command.
/CK
CK
Auto Refresh
CMD
PRE
NOP
Valid
~
~
tRP
tRFC
NOP
NOP
NOP
NOP
NOP
~
NOP
NOP
NOP
相關PDF資料 |
PDF描述 |
|---|---|
| HY5PS12823F | 64Mx8|1.8V|8K|D43/D44/D54/D55|DDR II SDRAM - 512M |
| HY5PS12823LF | 64Mx8|1.8V|8K|D43/D44/D54/D55|DDR II SDRAM - 512M |
| HY5P | Current Transducers HY 5 to 25-P/SP1 |
| HY5R256HC | -|2.5V|8K|40|Direct RDRAM - 256M |
| HY5R288HC | -|2.5V|8K|40|Direct RDRAM - 288M |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HY5PS12821AF | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:512Mb DDR2 SDRAM |
| HY5PS12821AF-C3 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:512Mb DDR2 SDRAM |
| HY5PS12821AF-C4 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:512Mb DDR2 SDRAM |
| HY5PS12821AF-E3 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:512Mb DDR2 SDRAM |
| HY5PS12821AFP | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:512Mb DDR2 SDRAM |
發(fā)布緊急采購，3分鐘左右您將得到回復。