HYS72T32000HP Datasheet, PDF (35/53 Pages) Qimonda AG – 240-Pin Registered DDR2 SDRAM Modules

Internet Data Sheet
HYS72T[32/64]xxxHP–[3S/3.7]–A
Registered DDR2 SDRAM Modules
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.
Parameter
Enabled ODT current per DQ
ODT is HIGH; Data Bus inputs are FLOATING
Active ODT current per DQ
ODT is HIGH; worst case of Data Bus inputs are
STABLE or SWITCHING.
Symbol
I_ODTO
I_ODTT
Min.
5
2.5
7.5
10
5
15
Typ.
6
3
9
12
6
18
TABLE 26
ODT current per terminated pin
Max. Unit EMRS(1) State
7.5 mA/DQ
3.75 mA/DQ
11.25 mA/DQ
15 mA/DQ
7.5 mA/DQ
22.5 mA/DQ
A6 = 0, A2 = 1
A6 = 1, A2 = 0
A6 = 1, A2 = 1
A6 = 0, A2 = 1
A6 = 1, A2 = 0
A6 = 1, A2 = 0
Rev. 1.01, 2006-09
35
03292006-ZZHP-PR83