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Seagate ST940813AM, ST940814AM, ST930814AM Specifications for 20 Gbyte models, 5% to 90% operating

Models: ST940813AM ST920814AM ST920813AM ST940814AM ST930813AM ST930814AM

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Table 2:	Specifications for 20 Gbyte models

Drive specification		ST920813AM		ST920814AM
		(OEM)		(Aftermarket)


Formatted (512 bytes/sector)*		20 Gbytes

Guaranteed sectors		39,070,080

Bytes per sector		512

Physical read/write heads		1

Discs		1

Cache		8 Mbytes

Recording density, BPI		540.1k bits/inch at ID

Track density. TPI		119k tracks/inch at ID

Areal density		64.3 Gbits/inch2 at ID
Spindle speed		5,400 RPM

Internal data transfer rate		321.1 Mbits/sec max

I/O data transfer rate		100 Mbytes/sec

ATA data-transfer modes supported		PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

Height		9.5 +/-0.2 mm (0.374 +/-.008 inches)

Width		69.85 +/-0.25 mm (2.750 +/-0.010 inches)

Length		100.2 +/-0.25 mm (3.945 +/-0.010 inches)

Weight		100 grams (0.22 lb) (typical)

Average latency		5.6 msecs

Power-on to ready
-20 to 85°C)		3.0 seconds (typical)
-30 to -20°C		15 seconds (typical)
3 sigma maximum at extreme temperature		30 seconds

Standby to ready
-20 to 85°C		3.0 seconds (typical)
-30 to -20°C		15 seconds (typical)
3 sigma maximum at extreme temperature		30 seconds

Track-to-track seek time		1.0 msec (read, typical), 1.5 msec (write, typical)

Average seek time		12.5 msec (typical)

Average seek, read		12.5 msec (typical)

Average seek, write		14.5 msec (typical)

Full-stroke seek		22 msec (typical); 24 msec (max)

Startup current 5V		1.1 amps (typical)

Seek power		1.90 watts / 0.38 amps (typical)

Read power		1.90 watts / 0.38 amps (typical)

Write power		1.70 watts / 0.34 amps (typical)

Idle mode		0.99 watts / 0.20 amps (typical)

Standby mode		0.26 watts / 0.05 amps (typical)***

Sleep mode		0.26 watts / 0.05 amps (typical)***

Voltage tolerance (including noise)		5V ± 5%

Ambient temperature
Operating		-30° to 85°C (OEM); -20° to 75°C (aftermarket);
Nonoperating		–40° to 95°C (OEM and aftermarket)

Temperature gradient		3°C per minute, noncondensing (operating)
		3°C per minutes, max, noncondensing (nonoperating)

Relative humidity (noncondensing)		5% to 90% (operating)
		5% to 95% (nonoperating)

Relative humidity gradient		30% per hour max

6	EE25 Series Product Manual, Rev. E

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Seagate ST940813AM, ST940814AM, ST930814AM, ST930813AM, ST920813AM Specifications for 20 Gbyte models, 5% to 90% operating

Contents

ST940813AM ST940814AM ST930813AM ST930814AM ST920813AM ST920814AM EE25 SeriesProduct Manual August Contents 1.0 Introduction 2.0 Drive specifications3.0 Configuring and mounting the drive 5.0 Seagate Technology support servicesEE25 Series Product Manual, Rev. E List of Figures EE25 Series Product Manual, Rev. E 1.0 Introduction EE25 Series Product Manual, Rev. E 2.0 Drive specifications 2.1 Specification summarySpecifications for 40 and 30 Gbyte models EE25 Series Product Manual, Rev. EEE25 Series Product Manual, Rev. E 1.0 G 200 - 500 Hz5.0 Gs 0 to peak, 5-500 Hz X, Y, Z axis 0, 22, 45 angles following web pageSpecifications for 20 Gbyte models 5% to 90% operatingDrive specification EE25 Series Product Manual, Rev. EST920813AM ST920814AM2.3 Default logical geometry 2.2 Formatted capacity2.4 Physical organization LBA mode2.6 Physical characteristics 2.5 Recording and interface technology2.7 Seek time SpecificationStart/stop times EE25 Series Product Manual, Rev. E2.9 Power specifications 2.9.1 Power consumptionSpinup power Read/write power and current2.9.1.1 Typical current profile 2.9.2 Conducted noise2.9.3 Voltage tolerance Figure 1. Typical 5V startup and operation current profile2.9.4 Power-management modes Idle and Standby timersActive mode Idle mode2.10 Environmental specifications 2.10.1 Ambient temperature2.10.2 Temperature gradient 2.10.3.2 Wet bulb temperature2.11.1 Shock 2.11.1.1 Operating shock2.11.1.2 Nonoperating shock Figure 2. Temperature vs. altitude capability2.12 Acoustics 2.11.2 Vibration2.11.2.1 Operating vibration 2.11.2.2 Nonoperating vibration2.13 Electromagnetic immunity 2.14Reliability 2.15.1 Safety certification 2.15 Agency certification2.15.2 Electromagnetic compatibility Korean RRL2.16 Environmental protection 2.17 Corrosive environment2.16.1 European Union Restriction of Hazardous Substances RoHS EE25 Series Product Manual, Rev. E 3.0 Configuring and mounting the drive 3.1 Handling and static discharge precautions3.2 Jumper settings 3.2.1 Master/slave configuration3.3 Drive mounting 3.2.2 Cable-select option4.1 ATA interface signals and connector pins 4.0 ATA interface4.1.1 Supported ATA commands Command nameCommand code in hex ATA-standard commandsEE25 Series Product Manual, Rev. E 9AH, FAH, FBH4.1.2 Identify Device command xxxxH xxxxHxx07H xx3FHEE25 Series Product Manual, Rev. E xxxxH4.1.3 Set Features command Disable write cacheEE25 Series Product Manual, Rev. E 5.0 Seagate Technology support services Seagate Service CentersWarranty Support InternetCustomer Service Operations USA/Canada/Latin America support servicesEurope, the Middle East and Africa Support Services Asia/Pacific Support ServicesNumerics IndexPage Page EE25 Series Product Manual, Rev. E Page Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA