E1729E30 Datasheet, PDF (6/33 Pages) Elpida Memory – 1G bits DDR3 SDRAM

EDJ1108DJBG, EDJ1116DJBG
1. Electrical Conditions
• All voltages are referenced to VSS (GND)
• Execute power-up and Initialization sequence before proper device operation is achieved.
1.1 Absolute Maximum Ratings
Table 1: Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Notes
Power supply voltage
VDD
−0.4 to +1.975
V
1, 3
Power supply voltage for output
VDDQ
−0.4 to +1.975
V
1, 3
Input voltage
VIN
−0.4 to +1.975
V
1
Output voltage
VOUT
−0.4 to +1.975
V
1
Reference voltage
VREFCA
−0.4 to 0.6 × VDD
V
3
Reference voltage for DQ
VREFDQ
−0.4 to 0.6 × VDDQ
V
3
Storage temperature
Tstg
−55 to +100
°C
1, 2
Power dissipation
PD
1.0
W
1
Short circuit output current
IOUT
50
mA
1
Notes: 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.
3. VDD and VDDQ must be within 300mV of each other at all times; and VREF must be no greater than 0.6 × VDDQ, When
VDD and VDDQ are less than 500mV; VREF may be equal to or less than 300mV.
Caution: Exposing the device to stress above those listed in Absolute Maximum Ratings could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
1.2 Operating Temperature Condition
Table 2: Operating Temperature Condition
Parameter
Symbol
Rating
Unit
Notes
Operating case temperature
TC
0 to +95
°C
1, 2, 3
Notes: 1.
2.
3.
Operating temperature is the case surface temperature on the center/top side of the DRAM.
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°C to +85°C under all operating conditions.
Some applications require operation of the DRAM in 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 3.9µs. (This double
refresh requirement may not apply for some devices.)
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 bit [A6, A7] = [0, 1]) or enable the optional Auto
Self-Refresh mode (MR2 bit [A6, A7] = [1, 0]).
Data Sheet E1729E30 (Ver. 3.0)
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