參數(shù)資料
型號(hào)： 97SD3240RPQH
廠商： MAXWELL TECHNOLOGIES
元件分類： DRAM
英文描述： 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
中文描述： 32M X 40 SYNCHRONOUS DRAM, 6 ns, QFP132
封裝： STACK, QFP-132
文件頁(yè)數(shù)： 2/39頁(yè)
文件大?。?/td> 759K
代理商： 97SD3240RPQH
97SD3240
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All data sheets are subject to change without notice
2006 Maxwell Technologies
All rights reserved.
1.25Gb (8-Meg X 40-Bit X 4-Banks) SDRAM
05.10.06 Rev 4
DQM Truth Table
Note: H: V
IH L: VIL x VIH or VIL
Write: I
DID is Needed
Read: I
DOD is Needed
The SDRAM can mask input/output data by means of DQM.
During reading, the output buffer is set to Low-Z by setting DQM to Low, enabling data output. On the other
hand, when DQM is set High, the output buffer becomes High-Z, disabling data output.
During writing, data is written by setting DQM to Low. When DQM is set to High, the previous data is held
( the new data is not written). Desired data can be masked during burst read or burst write by setting DQM..
For more details, refer to the DQM control section of the SDRAM operating instructions.
CKE Truth Table
Note: H:V
IH L:VIL x VIH or VIL
COMMAND
SYMBOL
CKE = N-1
CKE = N
DQM
Byte (DQ0 to DQ39) write enable/output
enable
ENB
H
x
L
Byte (DQ0 to DQ39) write inhibit/output dis-
able
MASK
H
x
H
CURRENT STATE
COMMAND
N
-1
N
CS
RAS
CAS
WE
ADDRESS
Active
Clock suspended mode entry
H
L
x
Any
Clock Suspend
L
x
Clock Suspend
Clock Suspend mode exit
L
H
x
Idle
Auto-refresh command (REF)
H
L
H
x
Idle
Self-refresh entry (SELF)
H
L
H
x
Idle
Power down entry
HL
LH
H
x
H
L
HL
xxx
x
Self Refresh
Self Refresh exit (SELFX)
L
H
L
H
x
Power down
Power down exit
LH
H
x
L
H
xxx
x
相關(guān)PDF資料
PDF描述
97SD3240RPQI 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
97SD3240RPQK 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
97SD3240 1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
97SD3248RPQE 1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
97SD3240RPQI 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
97SD3240RPQK 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.25Gb SDRAM 8-Meg X 40-Bit X 4-Banks
97SD3248 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
97SD3248_06 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
97SD3248RPQE 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:1.5Gb SDRAM 8-Meg X 48-Bit X 4-Banks
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