Seagate ST32000645SS, ST31000524NS, ST3500514NS, ST32000644NS Conducted noise, Voltage tolerance

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Figure 1. Typical 5V startup and operation current profile

Figure 2. Typical 12V startup and operation current profile

3.8.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 V line or an equivalent 15-ohm resistive load on the +5V line.

Using 12V power, the drive is expected to operate with a maximum of 120mV peak-to-peak square-wave injected noise at up to 10MHz.

Using 5V power, the drive is expected to operate with a maximum of 100mV peak-to-peak square-wave injected noise at up to 10MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

3.8.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ±10%

Constellation ES Serial ATA Product Manual, Rev. G

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Contents ST32000644NS ST31000524NS ST3500514NS Constellation ES Serial ATARevision Date Revision historyContents Constellation ES Serial ATA Product Manual, Rev. G List of Figures Page Seagate Online Support and Services Seagate Technology support servicesIntroduction About the Serial ATA interface Drive specifications summary Specification summary tables0A optional configuration through Smart Command Transport Recording and interface technology Default logical geometryLBA mode Formatted capacityTypical seek times ms Read Write Physical characteristicsSeek time Start/stop timesPower specifications 2000GB Drive DC power requirements 1000GB Drive DC power requirements Typical DC Maximum DC Maximum DCpeak 12.22 12.26 500GB Drive DC power requirementsTypical current profiles Voltage tolerance Conducted noiseSleep mode Power-management modesActive mode Idle modePowerChoice is invoked using one of two methods Extended Power Conditions PowerChoiceTMPower Condition Name Power Condition ID Description Power Condition Identifiers Power Condition Name PowerChoice Supported Extended Power Condition IndentifiersPower Condition Name Manufacturer Default Timer Values EPC Subcommand DescriptionEnvironmental limits Temperature a. OperatingOperating shock Humidity Relative humidityAltitude ShockNonoperating vibration AcousticsVibration Operating vibrationTest Description Performance level Reference standard Test for Prominent Discrete Tones PDTsElectromagnetic immunity Radio frequency environmentsReliability Agency certification Environmental protection Corrosive environment Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewHot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalSupported ATA commands Supported ATA commandsCommand name Command code in hex F5H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordWord Set Features command values Set Features commandM.A.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Constellation ES Serial ATA Product Manual, Rev. G Index ITE Page Constellation ES Serial ATA Product Manual, Rev. G Page Disc Drive, Scotts Valley, California 95066-4544, USA
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