參數(shù)資料
型號(hào)： HYS72T256020HU-5-A
廠商： QIMONDA AG
元件分類： DRAM
英文描述： 240-Pin Unbuffered DDR2 SDRAM Modules
中文描述： 256M X 72 DDR DRAM MODULE, 0.6 ns, DMA240
封裝： GREEN, DIMM-240
文件頁(yè)數(shù)： 18/61頁(yè)
文件大?。?/td> 1365K
代理商： HYS72T256020HU-5-A
Internet Data Sheet
Rev. 1.32, 2006-09
03062006-5RK8-1X8J
18
HYS[64/72]T256xxxHU–[3/…/5]–A
Unbuffered DDR2 SDRAM Modules
3.3
AC Characteristics
3.3.1
Speed Grade Definitions
List of speed grade definition tables.
Table 14 “Speed Grade Definition Speed Bins for DDR2–667” on Page 18
Table 15 “Speed Grade Definition Speed Bins for DDR2–533C” on Page 19
Table 16 “Speed Grade Definition Speed Bins for DDR2–400B” on Page 20
TABLE 14
Speed Grade Definition Speed Bins for DDR2–667
Speed Grade
DDR2–667C
DDR2–667D
Unit
Note
QAG Sort Name
–3
–3S
CAS-RCD-RP latencies
4–4–4
5–5–5
t
CK
Parameter
Symbol
Min.
Max.
Min.
Max.
—
Clock Frequency
@ CL = 3
@ CL = 4
@ CL = 5
t
CK
t
CK
t
CK
t
RAS
t
RC
t
RCD
t
RP
5
3
3
45
57
12
12
8
8
8
70000
—
—
—
5
3.75
3
45
60
15
15
8
8
8
70000
—
—
—
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)
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
HYS72T256023 240-Pin Registered DDR2 SDRAM Modules
HYS72T256023HR 240-Pin Registered DDR2 SDRAM Modules
HYS72T256023HR-5-A 240-Pin Registered DDR2 SDRAM Modules
HYS72T512022HR 240-Pin Registered DDR2 SDRAM Modules
HYS72T512022HR-3.7-A 240-Pin Registered DDR2 SDRAM Modules
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HYS72T256023 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered DDR2 SDRAM Modules
HYS72T256023HR 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered DDR2 SDRAM Modules
HYS72T256023HR-5-A 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered DDR2 SDRAM Modules
HYS72T256040HP 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered DDR2 SDRAM Modules
HYS72T256040HP-3.7-A 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered DDR2 SDRAM Modules
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*