參數(shù)資料
型號(hào)： NT5DS64M4AW-75B
廠(chǎng)商： Electronic Theatre Controls, Inc.
英文描述： 256Mb Double Data Rate SDRAM
中文描述： 256MB雙數(shù)據(jù)速率SDRAM
文件頁(yè)數(shù)： 60/78頁(yè)
文件大?。?/td> 1534K
代理商： NT5DS64M4AW-75B
NT5DS64M4AT NT5DS64M4AW
NT5DS32M8AT NT5DS32M8AW
256Mb Double Data Rate SDRAM
REV 1.1
12/2001
60
NANYA TECHNOLOGY CORP
. All rights reserved.
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
Electrical Characteristics & AC Timing for DDR266 - Applicable Specifications
Expressed in Clock Cycles
(0
°
C
≤
T
A
≤
70
°
C
;
V
DDQ
= 2.5V
±
0.2V; V
DD
= 2.5V
±
0.2V, See AC Characteristics)
Symbol
Parameter
t
CK
= 7.5ns
Units
Notes
Min
Max
t
MRD
Mode register set command cycle time
2
t
CK
1-4
t
WPRE
Write preamble
0.25
t
CK
1-4
t
RAS
Active to Precharge command
6
16000
t
CK
1-4
t
RC
Active to Active/Auto-refresh command period
9
t
CK
1-4
t
RFC
Auto-refresh to Active/Auto-refresh
command period
10
t
CK
1-4
t
RCD
Active to Read or Write delay
3
t
CK
1-4
t
RAP
Active to Read Command with Autoprecharge
3
t
CK
1-4
t
RP
Precharge command period
3
t
CK
1-4
t
RRD
Active bank A to Active bank B command
2
t
CK
1-4
t
WR
Write recovery time
2
t
CK
1-4
t
DAL
Auto precharge write recovery + precharge time
5
t
CK
1-5
t
WTR
Internal write to read command delay
1
t
CK
1-4
t
XSNR
Exit self-refresh to non-read command
10
t
CK
1-4
t
XSRD
Exit self-refresh to read command
200
t
CK
1-4
1. Input slew rate = 1V/ns
2. The CK/CK input reference level (for timing reference to CK/CK) is the point at which CK and CK cross: the input reference level for sig-
nals other than CK/CK, is V
REF.
3. Inputs are not recognized as valid until V
REF
stabilizes.
4. The Output timing reference level, as measured at the timing reference point indicated in AC Characteristics (Note 3) is V
TT
.
5. t
HZ
and t
LZ
transitions occur in the same access time windows as valid data transitions. These parameters are not referred to a specific
voltage level, but specify when the device is no longer driving (HZ), or begins driving (LZ).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NT5DS64M4AW-7K 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:256Mb Double Data Rate SDRAM
NT5DS64M4AW-8B 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:256Mb Double Data Rate SDRAM
NT5DS64M4CS 制造商:NANOAMP 制造商全稱(chēng):NANOAMP 功能描述:256Mb DDR Synchronous DRAM
NT5DS64M4CS-5T 制造商:NANOAMP 制造商全稱(chēng):NANOAMP 功能描述:256Mb DDR Synchronous DRAM
NT5DS64M4CS-6K 制造商:NANOAMP 制造商全稱(chēng):NANOAMP 功能描述:256Mb DDR Synchronous DRAM
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