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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 | V | 1,3 | |
VDDQ | Voltage on VDDQ pin relative to VSS | V | 1,3 | |
VIN, VOUT | Voltage on any pin relative to VSS | V | 1 | |
TSTG | Storage Temperature |
| °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
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
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
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
10. AC & DC Operating Conditions
10.1 Recommended DC Operating Conditions (SSTL-15)
Symbol | Parameter | Operation Voltage |
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Min. | Typ. | Max. | ||||||
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VDD | Supply Voltage | 1.35V | 1.283 | 1.35 | 1.45 | V | 1, 2, 3 | |
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1.5V | 1.425 | 1.5 | 1.575 | V | 1, 2, 3 | |||
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VDDQ | Supply Voltage for Output | 1.35V | 1.283 | 1.35 | 1.45 | V | 1, 2, 3 | |
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1.5V | 1.425 | 1.5 | 1.575 | V | 1, 2, 3 | |||
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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.
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