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参数资料
| 型号： | HYS72T256300EP-3.7-C |
| 厂商： | QIMONDA AG |
| 元件分类： | DRAM |
| 英文描述： | 256M X 72 DDR DRAM MODULE, 0.5 ns, DMA240 |
| 封装： | GREEN, RDIMM-240 |
| 文件页数： | 19/41页 |
| 文件大小： | 2780K |
| 代理商： | HYS72T256300EP-3.7-C |
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HYS72T256300EP–[25F/2.5/3/3S/3.7]–C
Registerd DDR2 SDRAM Module
Internet Data Sheet
Rev. 1.0, 2007-07
26
07312007-34WH-CYDW
Data output hold time from DQS
t
QH
t
HP –tQHS
—
Data hold skew factor
t
QHS
—400
ps
Average periodic refresh Interval
t
REFI
—7.8
s
14)15)
Average periodic refresh Interval
t
REFI
—3.9
s
Auto-Refresh to Active/Auto-Refresh
command period
t
RFC
127.5
—
ns
17)
Precharge-All (8 banks) command period
t
RP
t
RP +1 × tCK
—ns
Read preamble
t
RPRE
0.9
1.1
t
CK
Read postamble
t
RPST
0.40
0.60
t
CK
Active bank A to Active bank B command
period
t
RRD
7.5
—
ns
14)18)
Active bank A to Active bank B command
period
t
RRD
10
—
ns
Internal Read to Precharge command delay
t
RTP
7.5
—
ns
Write preamble
t
WPRE
0.25
—
t
CK
Write postamble
t
WPST
0.40
0.60
t
CK
19)
Write recovery time for write without Auto-
Precharge
t
WR
15
—
ns
Internal Write to Read command delay
t
WTR
7.5
—
ns
20)
Exit power down to any valid command
(other than NOP or Deselect)
t
XARD
2—
t
CK
21)
Exit active power-down mode to Read
command (slow exit, lower power)
t
XARDS
6 – AL
—
t
CK
Exit precharge power-down to any valid
command (other than NOP or Deselect)
t
XP
2—
t
CK
Exit Self-Refresh to non-Read command
t
XSNR
t
RFC +10
—
ns
Exit Self-Refresh to Read command
t
XSRD
200
—
t
CK
Write recovery time for write with Auto-
Precharge
WR
t
WR/tCK
t
CK
22)
1) For details and notes see the relevant Qimonda component data sheet
2)
V
DDQ = 1.8 V ± 0.1 V; VDD = 1.8 V ±0.1 V.
3) Timing that is not specified is illegal and after such an event, in order to guarantee proper operation, the DRAM must be powered down
and then restarted through the specified initialization sequence before normal operation can continue.
4) 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.
5) 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. component
6) Inputs are not recognized as valid until
V
REF stabilizes. During the period before VREF stabilizes, CKE = 0.2 x VDDQ is recognized as low.
7) The output timing reference voltage level is
V
TT. component datasheet
8) For each of the terms, if not already an integer, round to the next highest integer.
t
CK refers to the application clock period. WR refers to
the WR parameter stored in the MR.
9) The clock frequency is allowed to change during self-refresh mode or precharge power-down mode.
10) For timing definition, refer to the Component data sheet.
11) Consists of data pin skew and output pattern effects, and p-channel to n-channel variation of the output drivers as well as output Slew Rate
mis-match between DQS / DQS and associated DQ in any given cycle.
Parameter
Symbol
DDR2–533
Unit
Notes1)2)3)4)
5)6)7)
Min.
Max.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HYS72T256322HP | 制造商:QIMONDA 制造商全称:QIMONDA 功能描述:240-Pin Dual-Die Registered DDR2 SDRAM Modules |
| HYS72T256322HP-3.7-A | 制造商:QIMONDA 制造商全称:QIMONDA 功能描述:240-Pin Dual-Die Registered DDR2 SDRAM Modules |
| HYS72T256322HP-3S-A | 制造商:QIMONDA 制造商全称:QIMONDA 功能描述:240-Pin Dual-Die Registered DDR2 SDRAM Modules |
| HYS72T256420HFD-3.7-A | 制造商:QIMONDA 制造商全称:QIMONDA 功能描述:240-Pin Fully-Buffered DDR2 SDRAM Modules |
| HYS72T256420HFD-3S-A | 制造商:QIMONDA 制造商全称:QIMONDA 功能描述:240-Pin Fully-Buffered DDR2 SDRAM Modules |
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