Seagate ST91000641NS ST91000640NS Parameter 0GB Voltage +12, Regulation +10/-7.5% Watts, Power

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Table 2:		1000GB drive (Standard & SED model) DC power requirementss
			ST91000640NS								ST91000640NS
	Parameter				(3.0GB)												(6.0GB)
	Voltage		+5 V		+12 V		Power		+5 V								+12 V									Power
	Regulation		+10/-7.5%				(watts)		+10/-7.5%																	(watts)
	Average Idle Current		0.27		0.16		3.27		0.27							0.16										3.31
	Advanced Idle Current
		Idle1	0.22		0.16		3.07		0.23							0.16										3.10
		Idle2	0.15		0.13		2.33		0.16							0.13										2.36
		Idle3	0.15		0.09		1.86		0.16							0.09										1.89
		Standby	0.14		0.04		1.16		0.14							0.04										1.19
	Average Sleep Current		0.14		0.04		1.15		0.14							0.04										1.20
	Maximum Start Current:
		DC (Peak DC)	0.51		0.99		14.43		0.52							0.99										14.50
		AC (Peak AC)	0.72		1.37		19.99		0.66							1.36										19.61
	Delayed Motor Start (DC max)		0.14		0.04		1.18		0.15							0.04										1.23
	Peak Operating Current (random read):
		Typical DC	0.29		0.32		5.26		0.31							0.31										5.21
		Maximum DC	0.32		0.33		5.56		0.34							0.33										5.65
		Maximum DC (peak)	1.02		0.90		15.90		1.00							0.88										15.56
	Peak Operating Current (random write):
		Typical DC	0.38		0.27		5.19		0.39							0.27										5.19
		Maximum DC	0.40		0.28		5.40		0.41							0.28										5.46
		Maximum DC (peak)	0.96		0.90		15.60		0.96							0.90										15.60
	Peak operating current (sequential read):
		Typical DC	0.61		0.18		5.19		0.62							0.18										5.24
		Maximum DC	0.64		0.19		5.42		0.65							0.18										5.45
		Maximum DC (peak)	0.82		0.36		8.42		0.84							0.36										8.52
	Peak operating current (sequential write):
		Typical DC	0.76		0.18		5.93		0.76							0.18										5.95
		Maximum DC	0.79		0.19		6.16		0.80							0.19										6.22
		Maximum DC (peak)	0.98		0.34		8.98		0.98							0.36										9.22

*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.

10	Constellation.2 Serial ATA Product Manual, Rev. B

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Contents Standard Models Self-Encrypting Drive Models ST91000642NS ST9500622NS ST9250612NSSED Fips 140-2 Models Revision history Revision Date Sheets affected or commentsContents Serial ATA Sata interface List of Figures Page Seagate Technology support services Seagate Online Support and ServicesIntroduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 1TB, 500 and 250 GB models Constellation.2 Serial ATA Product Manual, Rev. B Default logical geometry LBA modeFormatted capacity Recording and interface technologyPhysical characteristics Seek timeStart/stop times Typical seek times ms Read WritePower specifications Power consumptionSpinup power Standby mode1000GB drive Standard & SED model DC power requirementss PowerST91000640NS Parameter 0GB Voltage +12 Regulation +10/-7.5% Watts500GB drive Standard & SED model DC power requirements ST9500620NS Parameter 0GB Voltage +12250GB drive Standard & SED model DC power requirements ST9250610NS Parameter 0GB Voltage +12Typical current profiles Conducted noise Voltage tolerancePower-management modes Active modeIdle mode Sleep modePowerChoice is invoked using one of two methods Power Condition Name Power Condition ID DescriptionEnvironmental limits Temperature a. OperatingRelative humidity Effective altitude sea level ShockOperating shock Nonoperating shockAcoustics VibrationOperating vibration Nonoperating vibrationElectromagnetic immunity ReliabilityRadio frequency environments Test Description Performance level Reference standardAgency certification Environmental protection Product warrantyReference documents Storage ShippingProduct repair and return information Corrosive environment China Restriction of Hazardous Substances RoHS DirectiveConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingCooling Air flowPurpose About FipsLevel 2 security Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseSerial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command valuesA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Index ITE Page Constellation.2 Serial ATA Product Manual, Rev. B Page Disc Drive, Scotts Valley, California 95066-4544, USA