參數(shù)資料
型號(hào)： HYS72T128020HU-3-A
廠(chǎng)商： QIMONDA AG
元件分類(lèi)： DRAM
英文描述： 240-Pin Unbuffered DDR2 SDRAM Modules
中文描述： 128M X 72 DDR DRAM MODULE, 0.45 ns, DMA240
封裝： GREEN, DIMM-240
文件頁(yè)數(shù)： 18/76頁(yè)
文件大?。?/td> 1840K
代理商： HYS72T128020HU-3-A
Internet Data Sheet
Rev. 1.41, 2007-05
03292006-EZUJ-JY4S
18
HYS[64/72]T[32/64/128]xx0HU–[3/3S/3.7/5]–A
Unbuffered DDR2 SDRAM Modules
3.3
AC Characteristics
This chapter contains the AC operating conditions tables.
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 19
TABLE 14
Speed Grade Definition Speed Bins for DDR2–667
Speed Grade
DDR2–667C
DDR2–667D
Unit
Notes
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
HYS72T128020HU-3S-A 240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T64000HU-3.7-A 240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T64000HU-3-A 240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T64000HU-3S-A 240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T128300HP-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
HYS72T128020HU-3-B 制造商:QIMONDA 制造商全稱(chēng):QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72T128020HU-3S-A 制造商:QIMONDA 制造商全稱(chēng):QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T128020HU-3S-B 制造商:QIMONDA 制造商全稱(chēng):QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
HYS72T128020HU-5-A 制造商:QIMONDA 制造商全稱(chēng):QIMONDA 功能描述:240-Pin Unbuffered DDR2 SDRAM Modules
HYS72T128020HU-5-B 制造商:QIMONDA 制造商全稱(chēng):QIMONDA 功能描述:240-Pin unbuffered DDR2 SDRAM Modules
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