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Constellation Serial ATA Product Manual, Rev. D 11
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
Parameter
Voltage +5 V +12 V Power +5 V +12 V Power
Regulation +/-5% +/-5% (watts) +/-5% +/-5
%
(watts)
Average Idle Current 0.23 0.08 2.11 0.24 0.08 2.14
Advanced Idle Current
Idle_A 0.23 0.08 2.08 0.24 0.08 2.10
Idle_B 0.14 0.06 1.46 0.15 0.06 1.49
Idle_C 0.14 0.04 1.25 0.15 0.04 1.27
Standby 0.16 0.02 1.02 0.17 0.02 1.04
Average Sleep Current 0.16 0.02 0.97 0.16 0.02 1.00
Maximum Start Current:
DC (Peak DC) 0.41 0.62 9.47 0.41 0.62 9.51
AC (Peak AC) 0.57 0.77 12.11 0.57 1.09 15.94
Delayed Motor Start (DC max) 0.16 0.02 1.01 0.17 0.02 1.04
Peak Operating Current (random read):
Typical DC 0.31 0.11 2.88 0.31 0.11 2.92
Maximum DC 0.31 0.12 3.01 0.32 0.12 3.07
Maximum DC (peak) 0.82 0.5
2
10.34 0.84 0.52 10.44
Peak Operating Current (random write):
Typical DC 0.35 0.12 3.18 0.36 0.12 3.22
Maximum DC 0.35 0.12 3.23 0.36 0.12 3.28
Maximum DC (peak) 1.02 0.56 11.82 1.00 0.52 11.24
Peak operating current (sequential read):
Typical DC 0.58 0.09 3.98 0.59 0.09 4.00
Maximum DC 0.60 0.09 4.08 0.60 0.09 4.11
Maximum DC (peak) 0.84 0.20 6.60 0.86 0.20 6.70
Peak operating current (sequential write):
Typical DC 0.62 0.09 4.15 0.62 0.09 4.18
Maximum DC 0.67 0.09 4.46 0.68 0.09 4.49
Maximum DC (peak) 1.02 0.20 7.50 1.04 0.20 7.60
ST9160511NS ST9160511NS
(1.5GB) (3.0GB)