參數(shù)資料
型號： V55C2256164VGLK-10H
廠商： PROMOS TECHNOLOGIES INC
元件分類： DRAM
英文描述： SYNCHRONOUS DRAM, PBGA54
封裝： 8 X 10 MM, GREEN, MO-210, FBGA-54
文件頁數(shù)： 39/47頁
文件大?。?/td> 581K
代理商： V55C2256164VGLK-10H
44
V55C2256164VG Rev. 1.0 September 2008
ProMOS TECHNOLOGIES
V55C2256164VG
20.2 Deep Power Down Exit
The deep power down mode is exited by asserting CKE high. After the exit, the following sequence is needed to
enter a new command:
1. Maintain NOP input conditions for a minimum of 200
s
2. Issue precharge commands for all banks of the device
3. Issue eight or more autorefresh commands
4. Issue a mode register set command to initialize the mode register
5. Issue an extended mode register set command to initialize the extende mode register
CLK
CK E
CS
RAS
CAS
WE
tRP
All banks
200
s
Au to
Deep Power Do wn
Auto
tRC
Mode
exi t
prec harge
refresh
Register
Set
Exte nded
Mode
Regis ter
Set
New
Com mand
Acce pted
Here
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