HYB18T1G[40/80/16]0AF(L)–[3S/3.7/5]
1-Gbit DDR2 SDRAM
Operating Conditions
5
Operating Conditions
This chapter lists the electrical characteristics and distinguishes between abolute maximum ratings, DC operating
conditions and AC operating conditions. For IDD characteristics please see Chapter 6.
5.1
Absolute Maximum Ratings
Caution is needed not to exceed abolute maximum ratings of the DRAM device listed in Table 17 at any time.
Table 17
Symbol
Absolute Maximum Ratings
Parameter
Rating
Min.
–1.0
–0.5
–0.5
–0.5
–55
Unit
Note
Max.
+2.3
+2.3
+2.3
+2.3
+100
1)
VDD
Voltage on VDD pin relative to VSS
Voltage on VDDQ pin relative to VSS
Voltage on VDDL pin relative to VSS
Voltage on any pin relative to VSS
Storage Temperature
V
VDDQ
VDDL
V
V
VIN, VOUT
TSTG
V
2)
°C
1) When VDD and VDDQ and VDDL are less than 500 mV; VREF may be equal to or less than 300 mV.
2) Storage Temperature is the case surface temperature on the center/top side of the DRAM.
Attention: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect reliability.
Table 18
Symbol
TOPER
DRAM Component Operating Temperature Range
Parameter
Rating
Unit
Note
1)2)3)4)
Operating Temperature
0 to 95
°C
1) Operating Temperature is the case surface temperature on the center / top side of the DRAM.
2) The operating temperature range are the temperatures where all DRAM specification will be supported. During operation,
the DRAM case temperature must be maintained between 0 - 95 °C under all other specification parameters.
3) Above 85° C the Auto-Refresh command interval has to be reduced to tREFI= 3.9 µs
4) 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
I
DD6 by approximately 50%
Internet Data Sheet
24
Rev. 1.31, 2007-01
03292006-1X3H-6X8S
QIMONDA [ QIMONDA AG ]
