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W9412G2IB Datasheet(PDF) 47 Page - Winbond

Part # W9412G2IB
Description  1M 횞 4 BANKS 횞 32 BITS GDDR SDRAM
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W9412G2IB Datasheet(HTML) 47 Page - Winbond

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W9412G2IB
Publication Release Date: Aug. 30, 2010
- 47 -
Revision A06
10.23 Auto Refresh Cycle
Note: CKE has to be kept “High” level for Auto-Refresh cycle.
10.24 Precharge/Activate Power Down Mode Entry and Exit Timing
Note:
1. If power down occurs when all banks are idle, this mode is referred to as precharge power down.
2. If power down occurs when there is a row active in any bank, this mode is referred to as active power down.
10.25 Input Clock Frequency Change during Precharge Power Down Mode Timing
NOP
NOP
NOP
DLL
RESET
NOP
NOP
CMD
200 clocks
tIS
Frequency Change
Occurs here
Minmum 2 clocks
required before
changing frequency
Stable new clock
before power down exit
CLK
CLK
CMD
CKE
tRP


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