Seagate ST320410ACE, ST380020ACE, ST340810ACE, ST360020ACE Power specifications, Power consumption

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8	U Series CE Family Product Manual, Rev. A

1.7 Power specifications

The drive receives DC power (+5V or +12V) through a four-pin standard drive power connector.

1.7.1 Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V input voltage at 25°C ambient temperature.

•Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

•Seek Mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power rep- resents the worst-case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.

•Read/Write power and current

Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-msec delay.

•Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive inactive.

•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 mode.

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Contents Series CE Family Page Series CE Family Page Contents Configuring and mounting the drive ATA interfaceFigures Series CE Family Product Manual, Rev. a Introduction Specification summary table Track-to-track seek Time msec typical Altitude meters be Low mean sea level LBA Mode Default logical geometryFormatted capacity Physical organization Physical characteristicsRecording and interface technology Seek time Start/stop timesPower specifications Power consumptionPower Mode Typical Watts Typical Amps Means 12V Typical current profileConducted noise Power-management modesVoltage tolerance Environmental tolerances Ambient temperature Temperature gradientSleep mode Idle and Standby timers3.2 Wet bulb temperature Humidity 3.1 Relative HumidityAltitude ShockNonoperating vibration Operating vibrationDrive acoustics Electromagnetic immunity Agency certification 1.12.1 Safety certificationReliability Taiwan Bsmi Electromagnetic compatibilityKorean RRL FCC verification Australian C-Tick N176Configuring and mounting the drive Handling and static-discharge precautionsDrive as master with a non-ATA-compatible slave Jumper settings Master/slave configurationOptions jumper block Alternate capacity jumper Cable-select optionUltra ATA/100 cable Recommended Case temperature Measurement location Drive mountingATA interface signals and connector pins ATA interfaceO pins and supported ATA signals Supported ATA commands Command name Command code in hex ATA-standard commandsIdentify Drive command Command nameATA-standard power-management commands ATA-standard security commandsWord Description 0C5AHWord Description Value Xx07HXx3FH Description if bit is set to Bit Word Bit WordSet Features command 0AH 4 S.M.A.R.T. commands Code in Features A.R.T. Command RegisterSeries CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a Series CE Family Product Manual, Rev. a