Samsung M391B5773DH0, M391B5273DH0 Absolute Maximum Ratings, AC & DC Operating Conditions

Unbuffered DIMM

datasheet

Rev. 1.0

DDR3L SDRAM

9. Absolute Maximum Ratings

9.1 Absolute Maximum DC Ratings

Symbol	Parameter	Rating	Units	NOTE
VDD	Voltage on VDD pin relative to VSS	-0.4 V ~ 1.975 V	V	1,3
VDDQ	Voltage on VDDQ pin relative to VSS	-0.4 V ~ 1.975 V	V	1,3
VIN, VOUT	Voltage on any pin relative to VSS	-0.4 V ~ 1.975 V	V	1
TSTG	Storage Temperature	-55 to +100	°C	1, 2

NOTE :

1.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.

2.Storage Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51-2 standard.

3.VDD and VDDQ must be within 300mV of each other at all times;and VREF must be not greater than 0.6 x VDDQ, When VDD and VDDQ are less than 500mV; VREF may be equal to or less than 300mV.

9.2 DRAM Component Operating Temperature Range

Symbol	Parameter	rating	Unit	NOTE
TOPER	Operating Temperature Range	0 to 95	°C	1, 2, 3

NOTE :

1.Operating Temperature TOPER is the case surface temperature on the center/top side of the DRAM. For measurement conditions, please refer to the JEDEC document JESD51-2.

2.The Normal Temperature Range specifies the temperatures where all DRAM specifications will be supported. During operation, the DRAM case temperature must be main- tained between 0-85°C under all operating conditions

3.Some applications require operation of the Extended Temperature Range between 85°C and 95°C case temperature. Full specifications are guaranteed in this range, but the following additional conditions apply:

a)Refresh commands must be doubled in frequency, therefore reducing the refresh interval tREFI to 3.9us. It is also possible to specify a component with 1X refresh (tREFI to 7.8us) in the Extended Temperature Range.

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), in this case IDD6 current can be increased around 10~20% than normal Temperature range.

10. AC & DC Operating Conditions

10.1 Recommended DC Operating Conditions (SSTL-15)

Symbol	Parameter	Operation Voltage		Rating		Units	NOTE
			Min.	Typ.	Max.
VDD	Supply Voltage	1.35V	1.283	1.35	1.45	V	1, 2, 3
		1.5V	1.425	1.5	1.575	V	1, 2, 3
VDDQ	Supply Voltage for Output	1.35V	1.283	1.35	1.45	V	1, 2, 3
		1.5V	1.425	1.5	1.575	V	1, 2, 3

NOTE:

1.Under all conditions VDDQ must be less than or equal to VDD.

2.VDDQ tracks with VDD. AC parameters are measured with VDD and VDDQ tied together.

3.VDD & VDDQ rating are determinied by operation voltage.

- 11 -