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參數(shù)資料
| 型號： | HYS72T32000HU-25F-A |
| 廠商： | QIMONDA AG |
| 元件分類： | DRAM |
| 英文描述： | 240-Pin Unbuffered DDR2 SDRAM Modules |
| 中文描述： | 32M X 72 DDR DRAM MODULE, 0.4 ns, DMA240 |
| 封裝： | GREEN, DIMM-240 |
| 文件頁數(shù)： | 17/73頁 |
| 文件大?。?/td> | 1574K |
| 代理商： | HYS72T32000HU-25F-A |
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Internet Data Sheet
Rev. 1.41, 2006-11
03062006-0GN5-WTPW
17
HYS[64/72]T[16/32/64]0xxHU–[2.5/../5]–A
Unbuffered DDR2 SDRAM Modules
3.3
Timing Characteristics
This chapter describes the AC characteristics.
3.3.1
Speed Grade Definitions
All Speed grades faster than DDR2-DDR400B comply with DDR2-DDR400B timing specifications (
t
CK
= 5ns with
t
RAS
= 40ns).
Speed Grade Definition for DDR2-800 (
Table 12
), DDR2-667(
Table 13
), DDR2-533C(
Table 14
) and DDR2-400B(
Table 15
).
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 |
|---|---|
| HYS72T32000HU-3.7-A | 240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-3-A | 240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-3S-A | 240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-5-A | 240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T64020HU | 240-Pin Unbuffered DDR2 SDRAM Modules |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HYS72T32000HU-3.7-A | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-3-A | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-3S-A | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T32000HU-5-A | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules |
| HYS72T512020HR | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered-DDR2-SDRAM Modules |
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