參數(shù)資料
型號: V53C1256162VBLT8EPC
廠商: Electronic Theatre Controls, Inc.
英文描述: 256Mbit MOBILE SDRAM 2.5 VOLT FBGA PACKAGE 16M X 16
中文描述: 片256Mbit移動SDRAM 2.5伏FBGA封裝16米x 16
文件頁數(shù): 43/46頁
文件大?。?/td> 541K
代理商: V53C1256162VBLT8EPC
43
V55C2256164VB Rev. 1.0 April 2005
ProMOS TECHNOLOGIES
V55C2256164VB
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
μ
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
precharge
200
s
Auto
refresh
Deep Power Down
exit
Auto
refresh
tRC
Mode
Register
Set
Extended
Mode
Register
Set
New
Command
Accepted
Here
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