參數(shù)資料
型號: HYS72T512020HR-3.7-A
廠商: QIMONDA AG
元件分類: DRAM
英文描述: 240-Pin Registered-DDR2-SDRAM Modules
中文描述: 512M X 72 DDR DRAM MODULE, 0.5 ns, DMA240
封裝: GREEN, DIMM-240
文件頁數(shù): 24/37頁
文件大?。?/td> 892K
代理商: HYS72T512020HR-3.7-A
Internet Data Sheet
Rev. 1.11, 2006-09
03062006-TZ8J-GNDA
26
HYS72T512020HR–[3.7/5]–A
Registered DDR2 SDRAM Modules
3.4.1
Currents Test Conditions
For testing the
I
DD
parameters, the following timing parameters are used:
TABLE 18
I
DD
Measurement Test Conditions for DDR2–400 and DDR2–533
3.4.2
On Die Termination (ODT) Current
The ODT function adds additional current consumption to the
DDR2 SDRAM when enabled by the EMRS(1). Depending on
address bits A[6,2] in the EMRS(1) a “weak” or “strong”
termination can be selected. The current consumption for any
terminated input pin, depends on the input pin is in tri-state or
driving 0 or 1, as long a ODT is enabled during a given period
of time.
TABLE 19
ODT current per terminated pin
Parameter
Symbol
–3.7
–5
Unit
DDR2–533C
DDR2–400B
CAS Latency
Clock Cycle Time
Active to Read or Write delay
Active to Active / Auto-Refresh command period
Active bank A to Active bank B command delay
Active to Precharge Command
C
L
(IDD)
t
CK(IDD)
t
RCD(IDD)
t
RC(IDD)
4
3.75
15
60
3
5
15
55
t
CK
ns
ns
ns
t
RAS.MIN(IDD)
t
RAS.MAX(IDD)
t
RP(IDD)
t
RFC(IDD)
t
REFI
45
70000
15
127.5
7.8
40
70000
15
127.5
7.8
ns
ns
ns
ns
μ
s
Precharge Command Period
Auto-Refresh to Active / Auto-Refresh command period
Average periodic Refresh interval
Parameter
Symbol
Min.
Typ.
Max.
Unit
EMRS(1) State
Enabled ODT current per DQ
ODT is HIGH; Data
Bus inputs are FLOATING
I
ODTO
5
2.5
10
5
6
3
12
6
7.5
3.75
15
7.5
mA/DQ
mA/DQ
mA/DQ
mA/DQ
A6 = 0, A2 = 1
A6 = 1, A2 = 0
A6 = 0, A2 = 1
A6 = 1, A2 = 0
Active ODT current per DQ
ODT is HIGH; worst
case of Data Bus inputs are STABLE or
SWITCHING.
I
ODTT
相關(guān)PDF資料
PDF描述
HYS72T512020HR-5-A 240-Pin Registered-DDR2-SDRAM Modules
HYS72T512022EP 240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022EP-3.7-B 240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022EP-3S-B 240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022ER 240-Pin Dual Die Registered DDR2 SDRAM Modules
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HYS72T512020HR-5-A 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Registered-DDR2-SDRAM Modules
HYS72T512022EP 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022EP-3.7-B 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022EP-3S-B 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Dual Die Registered DDR2 SDRAM Modules
HYS72T512022ER 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:240-Pin Dual Die Registered DDR2 SDRAM Modules