Internet Data Sheet
HYS72T[128/256]00xHR–[3S/3.7/5]–A
Registered DDR2 SDRAM Modules
3.2
DC Operating Conditions
TABLE 9
Operating Conditions
Parameter
Symbol
Values
Min.
Unit
Note
Max.
1)
DIMM Module Operating Temperature Range (ambient)
DRAM Component Case Temperature Range
Storage Temperature
TOPR
TCASE
TSTG
PBar
0
+55
+95
+100
+105
90
°C
°C
°C
kPa
%
2)3)4)5)
0
–55
+69
10
6)
Barometric Pressure (operating & storage)
Operating Humidity (relative)
HOPR
1) When operating this product in the 85 °C to 95 °C TCASE temperature range, the High Temperature Self Refresh has to be enabled by
setting EMR(2) bit A7 to “1”. When the High Temperature Self Refresh is enabled there is an increase of IDD6 by approximately 50 %
2) DRAM Component Case Temperature is the surface temperature in the center on the top side of any of the DRAMs.
3) Within the DRAM Component Case Temperature range all DRAM specification will be supported.
4) Above 85 °C DRAM case temperature the Auto-Refresh command interval has to be reduced to tREFI = 3.9 µs.
5) Self-Refresh period is hard-coded in the DRAMs and therefore it is imperative that the system ensures the DRAM is below 85 °C case
temperature before initiating self-refresh operation.
6) Up to 3000 m
TABLE 10
Supply Voltage Levels and DC Operating Conditions
Parameter
Symbol
Values
Min.
Unit
Note
Typ.
Max.
Device Supply Voltage
Output Supply Voltage
Input Reference Voltage
SPD Supply Voltage
VDD
1.7
1.8
1.9
V
1)
2)
VDDQ
VREF
1.7
1.8
1.9
V
0.49 × VDDQ
0.5 × VDDQ
0.51 × VDDQ
V
VDDSPD
VIH(DC)
VIL (DC
IL
1.7
—
—
—
—
3.6
V
DC Input Logic High
VREF + 0.125
V
V
5
DDQ + 0.3
V
DC Input Logic Low
)
– 0.30
– 5
REF – 0.125
V
3)
In / Output Leakage Current
µA
1) Under all conditions, VDDQ must be less than or equal to VDD
2) Peak to peak AC noise on VREF may not exceed ± 2% VREF (DC).VREF is also expected to track noise in VDDQ
3) Input voltage for any connector pin under test of 0 V ≤ VIN ≤ VDDQ + 0.3 V; all other pins at 0 V. Current is per pin
.
Rev. 1.4, 2007-02
15
03062006-GD6J-14FP
QIMONDA [ QIMONDA AG ]
