參數(shù)資料
型號: W942504CH-7
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 64M X 4 DDR DRAM, 0.75 ns, PDSO66
封裝: 0.400 X 0.875 INCH, 0.65 MM PITCH, TSOP2-66
文件頁數(shù): 19/45頁
文件大?。?/td> 1261K
代理商: W942504CH-7
W942504CH
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5. Mode Register /Extended Mode register change bits (BS0, BS1)
These bits are used to select MRS/EMRS.
BS1 BS0
A12-A0
0
Regular MRS cycle
0
1
Extended MRS cycle
1
x
Reserved
6. Extended Mode Register field
1) DLL Switch field (A0)
This bit is used to select DLL enable or disable
A0
DLL
0
Enable
1
Disable
2) Output Driver Size Control field (A1)
This bit is used to select Output Driver Size, both Full strength and Half strength are based on
JEDEC standard.
A1
Output Driver
0
Full strength
1
Half strength
7. Reserved field
Test mode entry bit (A7)
This bit is used to enter Test mode and must be set to "0" for normal operation.
Reserved bits (A9, A10, A11, A12)
These bits are reserved for future operations. They must be set to "0" for normal operation.
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