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Seagate ST9500420AS Momentus 7200.4 SATA Product Manual - Page 14

Idle mode power, Standby mode, 9.1.1, Typical current profile, Table 3, DC power - performance

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• Idle mode power Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location. • Standby mode During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down model Table 3: DC power Power dissipation Spinup (max) Seek Read Write Idle, performance* Idle, active* Idle, low power mode* Standby Sleep +5V input average (25° C) 1.0 amps 2.2 watts 2.1 watts 2.2 watts 1.4 watts 1.0 watts 0.69 watts 0.20 watts 0.20 watts *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. 2.9.1.1 Typical current profile Figure 1. Typical +5V only startup and operation current profile 8 Momentus 7200.4 SATA Product Manual, Rev. A

Section	Page
Contents	3
1.0 Introduction	7
1.1 About the Serial ATA interface	8
2.0 Drive specifications	9
2.1 Specification summary table	9
2.2 Formatted capacity	11
2.2.1 LBA mode	11
2.3 Default logical geometry	11
2.4 Physical organization	11
2.5 Recording and interface technology	12
2.6 Physical characteristics	12
2.7 Seek time	13
2.8 Start/stop times	13
2.9 Power specifications	13
2.9.1 Power consumption	13
2.9.1.1 Typical current profile	14
2.9.2 Conducted noise	15
2.9.3 Voltage tolerance	15
2.9.4 Power-management modes	16
2.10 Environmental specifications	17
2.10.1 Ambient temperature	17
2.10.2 Temperature gradient	17
2.10.3 Relative humidity	17
2.10.4 Wet bulb temperature	17
2.10.5 Altitude	17
2.10.6 Shock	17
2.10.6.1 Operating shock	17
2.10.6.2 Nonoperating shock	18
2.10.7 Vibration	18
2.10.7.1 Operating vibration	18
2.10.7.2 Nonoperating vibration	18
2.11 Acoustics	18
2.12 Electromagnetic immunity	19
2.13 Reliability	19
2.13.1 Free Fall Protection feature	19
2.14 Agency certification	20
2.14.1 Safety certification	20
2.14.2 Electromagnetic compatibility	20
2.14.3 FCC verification	20
2.15 Environmental protection	22
2.15.1 European Union Restriction of Hazardous Substances (RoHS)	22
2.15.2 China Restriction of Hazardous Substances (RoHS) Directive	22
2.16 Corrosive environment	22
3.0 Configuring and mounting the drive	25
3.1 Handling and static-discharge precautions	25
3.2 Configuring the drive	26
3.3 Serial ATA cables and connectors	26
3.4 Drive mounting	27
4.0 Serial ATA (SATA) interface	29
4.1 Hot-Plug compatibility	29
4.2 Serial ATA device plug connector pin definitions	29
4.3 Supported ATA commands	31
4.3.1 Identify Device command	33
4.3.2 Set Features command	37
4.3.3 S.M.A.R.T. commands	38