參數(shù)資料
型號(hào)： MT48LC8M8A2TG-8EL:GIT
元件分類： DRAM
英文描述： 8M X 8 SYNCHRONOUS DRAM, 6 ns, PDSO54
封裝： 0.400 INCH, PLASTIC, TSOP2-54
文件頁(yè)數(shù)： 15/55頁(yè)
文件大小： 1454K
22
64Mb: x4, x8, x16 SDRAM
Micron Technology, Inc., reserves the right to change products or specifications without notice.
64MSDRAM.pmd – Rev. H; Pub. 12/04
2002 Micron Technology, Inc. All rights reserved.
64Mb: x4, x8, x16
SDRAM
tWR after the clock edge at which the last desired input
data element is registered. The auto precharge mode
requires a tWR of at least one clock plus time, regardless
of frequency. In addition, when truncating a WRITE
burst, the DQM signal must be used to mask input data
for the clock edge prior to, and the clock edge coinci-
dent with, the PRECHARGE command. An example is
shown in Figure 18. Data n + 1 is either the last of a burst
of two or the last desired of a longer burst. Following the
PRECHARGE command, a subsequent command to
the same bank cannot be issued until tRP is met.
In the case of a fixed-length burst being executed to
completion, a PRECHARGE command issued at the
optimum time (as described above) provides the same
operation that would result from the same fixed-length
burst with auto precharge. The disadvantage of the
PRECHARGE command is that it requires that the com-
mand and address buses be available at the appropri-
ate time to issue the command; the advantage of the
PRECHARGE command is that it can be used to trun-
cate fixed-length or full-page bursts.
Figure 18
WRITE to PRECHARGE
Data for any WRITE burst may be truncated with a
subsequent READ command, and data for a fixed-
length WRITE burst may be immediately followed by a
subsequent READ command. Once the READ com-
mand is registered, the data inputs will be ignored, and
WRITEs will not be executed. An example is shown in
Figure 17. Data n + 1 is either the last of a burst of two or
the last desired of a longer burst.
Data for a fixed-length WRITE burst may be fol-
lowed by, or truncated with, a PRECHARGE command
to the same bank (provided that auto precharge was
not activated), and a full-page WRITE burst may be
truncated with a PRECHARGE command to the same
bank. The PRECHARGE command should be issued
Figure 17
WRITE to READ
Figure 16
Random WRITE Cycles
DON’T CARE
DQM
CLK
DQ
T2
T1
T4
T3
T0
COMMAND
ADDRESS
BANK a,
COL n
T5
NOP
WRITE
PRECHARGE
NOP
DIN
n
DIN
n + 1
ACTIVE
t RP
BANK
(a or all)
t WR
BANK a,
ROW
DQM
DQ
COMMAND
ADDRESS
BANK a,
COL n
NOP
WRITE
PRECHARGE
NOP
DIN
n
DIN
n + 1
ACTIVE
t RP
BANK
(a or all)
t WR
NOTE: DQM could remain LOW in this example if the WRITE burst is a fixed length of two.
BANK a,
ROW
T6
NOP
tWR @ tCLK
≥ 15ns
tWR = tCLK < 15ns
TRANSITIONING DATA
DON’T CARE
CLK
DQ
T2
T1
T3
T0
COMMAND
ADDRESS
NOP
WRITE
BANK,
COL n
DIN
n
DIN
n + 1
DOUT
b
READ
NOP
BANK,
COL b
NOP
DOUT
b + 1
T4
T5
TRANSITIONING DATA
DON’T CARE
CLK
DQ
DIN
n
T2
T1
T3
T0
COMMAND
ADDRESS
WRITE
BANK,
COL n
DIN
a
DIN
x
DIN
m
WRITE
BANK,
COL a
BANK,
COL x
BANK,
COL m
TRANSITIONING DATA
相關(guān)PDF資料
PDF描述
MT4JSF6464HIY-80BXX 64M X 64 DDR DRAM MODULE, ZMA204
MT4JSF6464HY-1G4XX 64M X 64 DDR DRAM MODULE, ZMA204
MT4LC16M4A7DJ-6S 16M X 4 FAST PAGE DRAM, 60 ns, PDSO32
MT58L128L36P1T-5 128K X 36 CACHE SRAM, 2.8 ns, PQFP100
MT58L512Y36FT-8.5 512K X 36 CACHE SRAM, 8.5 ns, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT48LCM32B2P 制造商:MICRON 制造商全稱:Micron Technology 功能描述:SDR SDRAM MT48LC2M32B2 a?? 512K x 32 x 4 Banks
MT48NN 功能描述:插線板 48POS AUDIO PATCHBAY RoHS:否 制造商:Switchcraft 產(chǎn)品類型:Bantam (TT) 正規(guī)化: 高度/機(jī)架數(shù)量: 深度: 端接類型: 位置/觸點(diǎn)數(shù)量:48
MT48NNX 功能描述:插線板 48POS AUDIO PATCHBAY RoHS:否 制造商:Switchcraft 產(chǎn)品類型:Bantam (TT) 正規(guī)化: 高度/機(jī)架數(shù)量: 深度: 端接類型: 位置/觸點(diǎn)數(shù)量:48
MT48NS 功能描述:插線板 1 RU PANEL 48 LF JA RoHS:否 制造商:Switchcraft 產(chǎn)品類型:Bantam (TT) 正規(guī)化: 高度/機(jī)架數(shù)量: 深度: 端接類型: 位置/觸點(diǎn)數(shù)量:48
MT48NSX 功能描述:插線板 1/4" LF SLDR BAY 1RU, 2X24, NORM STR RoHS:否 制造商:Switchcraft 產(chǎn)品類型:Bantam (TT) 正規(guī)化: 高度/機(jī)架數(shù)量: 深度: 端接類型: 位置/觸點(diǎn)數(shù)量:48
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*