User guide

DDR3 SODIMM
Product Datasheet
Rev. 1.5a Nov. 2012
10
Operating temperature Conditions
Symbol Parameter Rating Units Note
Normal Operating Temperature Range 0 to 85 °C 1, 2
T
OPER
Extended Temperature Range (Optional) 85 to 95 °C 1,3
Note:
1. Operating Temperature T
OPER
is the case surface temperature on the center / top side of the DRAM.
2. The Normal Temperature Range specifies the temperatures where all DRAM specifications will be
supported. During operation, the DRAM case temperature must be maintained between 0 to 85 °C under all
operating conditions
3. Some applications require operation of the DRAM in the Extended Temperature Range between 85 °C
and 95 °C case temperature. Full specifications are supported in this range, but the following additional
conditions apply:
a) Refresh commands must be doubled in frequency, therefore reducing the Refresh interval tREFI to
3.9 μs. It is also possible to specify a component with 1X refresh (tREFI to 7.8μs) in the Extended
Temperature Range. Please refer to supplier data sheet and/or the DIMM SPD for option
availability.
b) If Self-Refresh operation is required in the Extended Temperature Range, then it is mandatory to
either use the Manual Self-Refresh mode with Extended Temperature Range capability (MR2 A6 =
0b and MR2 A7 = 1b) or enable the optional Auto Self-Refresh mode(MR2 A6 = 1b and MR2 A7 =
0b). Please refer to the supplier data sheet and/or the DIMM SPD for Auto Self-Refresh option
availability, Extended Temperature Range support and tREFI requirements in the Extended
Temperature Range.
DC Electrical Characteristics and Operating Conditions
Symbol Parameter Min Typ Max Units Notes
V
DD
Supply Voltage 1.425 1.5 1.575 V 1,2
V
DDQ
Output Supply Voltage 1.425 1.5 1.575 V 1,2
Note:
1. Under all conditions V
DDQ
must be less than or equal to V
DD
.
2. V
DDQ
tracks with V
DD
. AC parameters are measured with V
DD
and V
DDQ
tied together.