參數(shù)資料
型號(hào)： K4B4G0846B-MCF80
元件分類： DRAM
英文描述： 512M X 8 DDR DRAM, 0.3 ns, PBGA78
封裝： HALOGEN FREE AND ROHS COMPLIANT, FBGA-78
文件頁數(shù)： 4/59頁
文件大?。?/td> 1079K
代理商： K4B4G0846B-MCF80
Page 12 of 59
Rev. 1.0 March 2009
DDP 4Gb DDR3 SDRAM
K4B4G0446B
K4B4G0846B
6.0 Absolute Maximum Ratings
6.1 Absolute Maximum DC Ratings
[ Table 4 ] Absolute Maximum DC Ratings
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.
6.2 DRAM Component Operating Temperature Range
[ Table 5 ] Temperature Range
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 tem-
perature must be maintained 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 guaran-
teed 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) or enable the optional Auto Self-Refresh mode (MR2 A6 = 1b and MR2 A7 =
0b)
7.0 AC & DC Operation Conditions
7.1 Recommended DC operating Conditions (SSTL_1.5)
[ Table 6 ] Recommended DC Operating Conditions
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.
Symbol
Parameter
Rating
Units
Notes
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
Symbol
Parameter
rating
Unit
Notes
TOPER
Operating Temperature Range
0 to 95
°C
1, 2, 3
Symbol
Parameter
Rating
Units
Notes
Min.
Typ.
Max.
VDD
Supply Voltage
1.425
1.5
1.575
V
1,2
VDDQ
Supply Voltage for Output
1.425
1.5
1.575
V
1,2
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