參數(shù)資料
型號: MT48LC32M4A2P-7ELIT:G
元件分類: DRAM
英文描述: 32M X 4 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
封裝: 0.400 INCH, LEAD FREE, PLASTIC, TSOP2-54
文件頁數(shù): 49/74頁
文件大小: 2385K
PDF: 09005aef8091e66d/Source: 09005aef8091e625
Micron Technology, Inc., reserves the right to change products or specifications without notice.
128MSDRAM_2.fm - Rev. N 1/09 EN
53
1999 Micron Technology, Inc. All rights reserved.
128Mb: x4, x8, x16 SDRAM
Timing Diagrams
Figure 37:
Initialize and Load Mode Register
Notes:
1. If CS# is HIGH at clock HIGH time, all commands applied are NOP.
2. The mode register may be loaded prior to the AUTO REFRESH cycles if desired.
3. JEDEC and PC100 specify 3 clocks.
4. Outputs are guaranteed High-Z after command is issued.
tCH
tCL
tCK
CKE
CLK
COMMAND
DQ
BA0, BA1
BANK
tRFC
tMRD
tRFC
AUTO REFRESH
Program Mode Register 2, 3, 4
tCMH
tCMS
Precharge
all banks
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tRP
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tCKS
Power-up:
VDD and
CLK stable
T = 100s
MIN
PRECHARGE
NOP
AUTO
REFRESH
NOP
LOAD MODE
REGISTER
ACTIVE
NOP
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AUTO
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High-Z
tCKH
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DQM /
DQML, DQMH
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NOP
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tCMH
tCMS
tCMH
tCMS
A0–A9, A11
ROW
tAH
tAS
CODE
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A10
ROW
tAH
tAS
CODE
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ALL BANKS
SINGLE BANK
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DON’T CARE
T0
T1
Tn + 1
To + 1
Tp + 1
Tp + 2
Tp + 3
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