參數(shù)資料
型號: IS43R16800A-6TL
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: DRAM
英文描述: 8Meg x 16 128-MBIT DDR SDRAM
中文描述: 8M X 16 DDR DRAM, 0.7 ns, PDSO66
封裝: LEAD FREE, PLASTIC, TSOP2-66
文件頁數(shù): 13/47頁
文件大?。?/td> 473K
代理商: IS43R16800A-6TL
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. 00A
04/04/06
13
ISSI
IS43R16800A-6
EXTENDED MODE REGISTER DEFINITION
Drive Strength
E6
0
0
E5
0
0
E4
0
0
E3
0
0
E2
0
0
E1
0
1
Type
Full Strength
Weak
All Other States Reserved
Operating Mode
E13
0
E12
1
E11
0
E10
0
E9
0
E8
0
E7
0
Mode
Standard Operation
All Other States Reserved
DLL
E0
0
1
Status
Enable
Disable
BA1 BA0 A11 A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Address Bus (Ax)
Mode Register (Ex)
EXTENDED MODE REGISTER DEFINITION
The Extended Mode Register is a second register to
enable additional functions of the DDR SDRAM. This
register is loaded as a step in the normal initialization
of the device. The Load Extended Mode Register
command samples the values on inputs A0-A11, BA0
(High) and BA1 (Low) and stores them as register
values E0-E13. The additional functions are DLL
enable/disable and output drive strength. Similarly to
the Load Mode Register, the Load Extended Mode
Register has reserved bit values, a bank idle pre-
requisite, and a tMRD time requirement. The data in
the mode register is retained until it is reloaded or the
device loses its power.
DLL Enable/Disable
When the Load Extended Mode Register command is
issued, DLL should be enabled (E0 = 0). Normal
operation of the device requires this, but DLL can be
disabled for debugging or evaluation, if necessary.
Output Drive Strength
Normal drive strength for the outputs is specified as
SSTL 2. However, there is an option for reduced drive
strength included.
相關(guān)PDF資料
PDF描述
IS43R16800A1 8Meg x 16 128-MBIT DDR SDRAM
IS43R16800A1-5TL 8Meg x 16 128-MBIT DDR SDRAM
IS43R32400A 4Meg x 32 128-MBIT DDR SDRAM
IS43R32400A-5B 4Meg x 32 128-MBIT DDR SDRAM
IS43R32400A-5BL 4Meg x 32 128-MBIT DDR SDRAM
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