參數(shù)資料
型號(hào)： HYS72T64900EU-2.5-B2
廠商： QIMONDA AG
元件分類： DRAM
英文描述： 240-Pin unbuffered DDR2 SDRAM Modules
中文描述： 64M X 72 DDR DRAM MODULE, 0.4 ns, DMA240
封裝： GREEN, UDIMM-240
文件頁(yè)數(shù)： 18/95頁(yè)
文件大?。?/td> 1818K
代理商： HYS72T64900EU-2.5-B2
Internet Data Sheet
Rev. 1.0, 2006-10
10202006-L0SM-FEYT
18
HYS[64/72]T[32/64/128][0/9]xxEU-[25F/2.5/3/3S/3.7]-B2
Unbuffered DDR2 SDRAM Module
3.3
Timing Characteristics
All Speed grades faster than DDR2-DDR400B comply with DDR2-DDR400B timing specifications (
t
CK
= 5ns with
t
RAS
= 40ns).
3.3.1
Speed Grade Definitions
Speed Grade Definition:
Table 12
for DDR2–800;
Table 13
for DDR2–667 and
Table 14
for DDR2–533C
TABLE 12
Speed Grade Definition Speed Bins for DDR2–800
Speed Grade
DDR2–800D
DDR2–800E
Unit
Note
QAG Sort Name
–2.5F
–2.5
CAS-RCD-RP latencies
5–5–5
6–6–6
t
CK
Parameter
Symbol
Min.
Max.
Min.
Max.
—
Clock Frequency
@ CL = 3
@ CL = 4
@ CL = 5
@ CL = 6
t
CK
t
CK
t
CK
t
CK
t
RAS
t
RC
t
RCD
t
RP
5
3.75
2.5
2.5
45
57.5
12.5
12.5
8
8
8
8
70000
—
—
—
5
3.75
3
2.5
45
60
15
15
8
8
8
8
70000
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
1)2)3)4)
1) Timings are guaranteed with CK/CK differential Slew Rate of 2.0 V/ns. For DQS signals timings are guaranteed with a differential Slew
Rate of 2.0 V/ns in differential strobe mode and a Slew Rate of 1 V/ns in single ended mode. Timings are further guaranteed for normal
OCD drive strength (EMRS(1) A1 = 0)
2) The CK/CK input reference level (for timing reference to CK/CK) is the point at which CK and CK cross. The DQS / DQS, RDQS / RDQS,
input reference level is the crosspoint when in differential strobe mode.
3) Inputs are not recognized as valid until
V
REF
stabilizes. During the period before
V
REF
stabilizes, CKE = 0.2 x
V
DDQ
is recognized as low.
4) The output timing reference voltage level is
V
TT
.
5)
t
RAS.MAX
is calculated from the maximum amount of time a DDR2 device can operate without a refresh command which is equal to 9 x
t
REFI
.
1)2)3)4)
1)2)3)4)
1)2)3)4)
Row Active Time
Row Cycle Time
RAS-CAS-Delay
Row Precharge Time
1)2)3)4)5)
1)2)3)4)
1)2)3)4)
1)2)3)4)
相關(guān)PDF資料
PDF描述
HYS72T64900EU-25F-B2 240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3.7-B2 240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3-B2 240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3S-B2 240-Pin unbuffered DDR2 SDRAM Modules
HYS72T128020HFA 240-Pin Fully-Buffered DDR2 SDRAM Modules
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HYS72T64900EU-25F-B2 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3.7-B2 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3-B2 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72T64900EU-3S-B2 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72V1000GU-10 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module
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