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JTF8C128_256x64AZ.fm - Rev. A 1/09 EN
9 ©2007 Micron Technology, Inc. All rights reserved.
1GB, 2GB (x64, SR): 240-Pin DDR3 SDRAM UDIMM
Electrical Specifications
Idd Specifications
Table 10: DDR3 Idd Specifications and Conditions – 1GB
Values are for the MT41J128M8 DDR3 SDRAM only and are computed from values specified in the
1Gb (128 Meg x 8) component data sheet
Parameter Symbol 1600 1333 1066 800 Units
Operating current 0: One bank ACTIVATE-to-PRECHARGE
Idd0 960 880 800 720 mA
Operating current 1: One bank ACTIVATE-to-READ-to-PRECHARGE
Idd1 1120 1040 960 880 mA
Precharge power-down current: Slow exit
Idd2P 80 80 80 80 mA
Precharge power-down current: Fast exit
Idd2P 200 200 200 200 mA
Precharge quiet standby current
Idd2Q 440 400 360 320 mA
Precharge standby current
Idd2N 480 440 400 360 mA
Active power-down current
Idd3P 320 280 240 200 mA
Active standby current
Idd3N 520 480 440 400 mA
Burst read operating current
Idd4R 2000 1600 1280 1040 mA
Burst write operating current
Idd4W 1800 1520 1280 1040 mA
Refresh current
Idd5B 2080 1920 1760 1600 mA
Self refresh temperature current: MAX T
C
= 85°C
Idd6 48 48 48 48 mA
Self refresh temperature current (SRT-enabled): MAX T
C
= 95°C
Idd6ET 72 72 72 72 mA
All banks interleaved read current
Idd7 4800 3920 3120 2800 mA
Table 11: DDR3 Idd Specifications and Conditions – 2GB
Values are for the MT41J256M8 DDR3 SDRAM only and are computed from values specified in the
2Gb (256 Meg x 8) component data sheet
Parameter Symbol 1333 1066 800 Units
Operating current 0: One bank ACTIVATE-to-PRECHARGE
Idd0 1040 960 800 mA
Operating current 1: One bank ACTIVATE-to-READ-to-PRECHARGE
Idd1 1240 1080 920 mA
Precharge power-down current: Slow exit
Idd2P 80 80 80 mA
Precharge power-down current: Fast exit
Idd2P 200 200 200 mA
Precharge quiet standby current
Idd2Q 560 480 400 mA
Precharge standby current
Idd2N 560 480 400 mA
Active power-down current
Idd3P 480 400 360 mA
Active standby current
Idd3N 720 600 520 mA
Burst read operating current
Idd4R 2040 1800 1560 mA
Burst write operating current
Idd4W 2400 2120 1840 mA
Refresh current
Idd5B 2440 2320 2200 mA
Self refresh temperature current: MAX T
C
= 85°C
Idd6 72 72 72 mA
Self refresh temperature current (SRT-enabled): MAX T
C
= 95°C
Idd6ET 96 96 96 mA
All banks interleaved read current
Idd7 3680 3440 3200 mA