August 2007
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC
in the United States and/or other countries. DB35 Series, SeaTools and SeaTDD are either trademarks or
registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States
and/or other countries. All other trademarks or registered trademarks are the property of their respective
owners.
One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity
may vary depending on oper ating envi ronme nt and for matting. Seagate reserves the right to chan ge, wi thout notice, product offerings or specifications.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• Quiet operation.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
• Support for autodetection of master/slave drives that use cable select (CSEL).
®
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DB35.3 Series PATA Product Manual, Rev. B
3
2.0Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the
following drive models:
The specifications li sted in th e t abl e belo w are for qui ck ref eren ce. Fo r det ai ls on spe c ific ation m easur emen t or
definition, see the appropriate section of this manual.
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DB35.3 Series PATA Product Manual, Rev. B
Table 1: Drive specificati ons summary for 750, 500, and 400 Gbyte models
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During period s of driv e idle, some offline activity may occu r ac cor ding to th e S. M.A .R. T. spe cif icat ion, whi ch ma y in crease acoustic and
power to operational levels.
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
3.0 bels (max)
3.0 (max)
14
bits read
To determine the warranty for a specific drive, use a web browser to
access the following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. Y ou will be asked
to provide the drive serial number, model number (or part number) and
country of purchase. The system will display the warranty information for
your drive.
2.7 bels (typical)
2.9 bels (max)
2.8 (typical)
2.9 (max)
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DB35.3 Series PATA Product Manual, Rev. B
Table 2: Drive specificati o ns summary for 320, 300, and 250 Gbyte models
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During period s of driv e idle, some offline activity may occu r ac cor ding to th e S. M.A .R. T. spe cif icat ion, whi ch ma y in crease acoustic and
power to operational levels.
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
2.9 bels (max)
2.9 bels (max)
14
bits read
T o determine the warranty for a specific drive, use a web browser to access the
following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. You will be asked to
provide the drive serial number, model number (or part number) and country of
purchase. The system will display the warranty information for your drive.
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.
capacity*
Guaranteed
sectors Bytes per sector
2.2.1LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4.1.2, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes.
2.3Default logi cal geometry
CylindersRead/write headsSectors per track
16,3831663
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9
2.4Record i n g an d i nt erface technol o gy
750GB500GB400GB320GB300GB250GB
InterfaceA TA
Recording methodPerpendicular
Recording density , KBPI (kbits/inch max)926813781813
Track density, KTPI (ktracks/inch avg)145
2
Areal density (Gbits/inch
Spindle speed (RPM) (± 0.2%)7,200
Internal data transfer rate (Mbits/sec max)1,030
Sustained data transfer rate (Mbytes/sec max)7872
I/O data-transfer rate (Mbytes/sec max)100 (Ultra DMA mode 5)
avg)128.2114.4
2.5Physical characteristics
Drive specification
Maximum he i g ht
(mm)
(inches)
26.1
1.028
Maximum wid th
Maximum length
Typical weight
ST3320820ACE, ST3300820ACE and ST3250820ACE
Seek measurem ent s a re t ake n wi th nom inal po w er a t 25 °C amb ient temperature. All tim es a re m easu red using
drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between
random tracks, less overhead.
T yp ical seek times (msec)Read Write
Track-to-track<0.8<1.0
Average<11.0<12.0
Average latency4.164.16
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks,
regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values.
However, due to the manner in which these drives a r e formatted, benchmark tests that include command
overhead or measure logical seeks may produce results that vary from these specifications.
2.7Start/stop times
Power-on to Ready (sec)16 (max)
St andby to Ready (sec)16 (max)
Ready to spindle stop (sec)10 (max)
2.8Power specifications
The drive receives DC power (+5V or +12V) through a four-pin standard drive power connector.
2.8.1Power consumption
Power requirements for the drives are listed in the table on page 11. Typical power measurements are based
on an average of drives tested, under nominal conditions, using +5.0V and +12.0V 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 re aches operating speed.
• Seek mode
During seek mod e, the read /write actuator arm move s toward a spe cific positi on on the d isc surface and does
not execute a read or write operation. Servo electronics are active. Seek mode power represents the worstcase 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 idle mode.
• Idle mode powe r
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DB35.3 Series PATA Product Manual, Rev. B
11
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.
Table 3: DC power requirements
Power diss ipation using consume r
storage profile (ST3750840ACE values
shown)
*Duri ng pe riods of driv e idl e, some off lin e a c tivit y ma y occu r ac cord in g t o t he S.M .A. R. T. speci fic ation , w hich may increase acoustic and
power to operational levels.
Average
(watts, 25° C)
Average
5V typ amps
Average
12V typ amps
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DB35.3 Series PATA Product Manual, Rev. B
2.8.1.1Typical current profile
Figure 1 Typical 5V startup and operation current profile
Figure 2 Typical 12V startup and operation current profile
2.8.2Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on
the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
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2.8.3Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
2.8.4Power-manag ement mo des
The drive provides programmable power management to provide greater energy efficiency. In most systems,
you can control power management through the system setup program. The drive features the following
power-management modes:
The drive is in Active mode during the read/write and seek operations.
• Idle mode
The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc
access is necessary.
• Standby mode
The drive enters Standby mode when the host sends a Standby Immediat e c omma nd. If the ho st has set the
standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a
specifiable length of time. The standby ti mer delay is establi shed using a Standb y or Idle command. In Standby
mode, thedrive buffer is enabled, the heads are parked and the spindle is at rest. The drive accepts all
commands and returns to Active mode any time disc access is necessary.
• Sleep mode
The drive enter s S leep m ode after rece iv ing a Slee p com man d fro m th e ho st. In Sleep mode, th e dr ive buf fer
is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a
Hard Reset or So ft Reset from the host. After recei ving a reset, the drive exits S leep mode and en ters Standby
mode with all current translation parameters intact.
• Idle and Standby timers
Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and
begins counting down from its specified delay times to zero. If the standby tim er reaches zero before an y drive
activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive
accepts all commands and returns to Active mode when disc access is necessary.
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2.9Environmental specif ications
2.9.1Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed75°C (167°F) within the operating ambient conditions. Recommended measurement locations are shown in Figure 6 on page 25.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet
(3,048 meters).
Operating
ST3320820ACE, ST3300820ACE and ST3250820ACE
ST3500830ACE and ST3400820ACE
ST3750840ACE
Nonoperating–40° to 70°C (–40° to 158°F)
2.9.2Temperature gradient
Operating20°C per hour (68°F per hour max), without condensation
Nonoperating30°C per hour (86°F per hour max)
2.9.3Humidity
0° to 65°C (32° to 149°F)
0° to 62°C (32° to 143.6°F)
0° to 60°C (32° to 140°F)
2.9.3.1Relative humidity
Operating5% to 90% noncondensing (30% per hour max)
Nonoperating5% to 95% noncondensing (30% per hour max)
Operating–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
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2.9.5Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
2.9.5.2Nono peratin g sho ck
2 Disc models
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 350 Gs based o n a nonr epetitive half-si ne shock pulse
of 2 msec duration.
3 and 4 Disc models
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 30 0 Gs based o n a nonr epetitive half-si ne shock pulse
of 2 msec duration.
2.9.6Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the
drive mounting screws. Vibration may be applied in the X, Y or Z axis.
2.9.6.1Operating vibration
The following table lists the maximum vibration levels that the drive may experience while meeting the performance standards specified in this document.
The following table lists the maximum nonoperating vibration that the drive may experience without incurring
physical damage or degradation in performance when subsequently put into operation.
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements are consistent with ISO document 7779. Sound power measurements are taken under essentially
free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks p er second is de fined
by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Table 4: Fluid Dynamic Bearing (FDB) motor acoustics
Idle*CE seek profile
ST3750840ACE2.8 bels (typ)
3.0 bels (max)
ST3500830ACE2.8 bels (typ)
3.0 bels (max)
ST3400820ACE2.7 bels (typ)
2.9 bels (max)
ST3320820ACE2.7 bels (typ)
2.9 bels (max)
ST3300820ACE2.5 bels (typ)
2.7 bels (max)
ST3250820ACE2.5 bels (typ)
2.7 bels (max)
*Duri ng pe riods of driv e idl e, some off lin e a c tivit y ma y occu r ac cord in g t o t he S.M .A. R. T. speci fic ation , w hich may increase acoustic and
power to operational levels.
2.9 bels (typ)
3.0 bels (max)
2.9 bels (typ)
3.0 bels (max)
2.8 bels (typ)
2.9 bels (max)
2.8 bels (typ)
2.9 bels (max)
2.7 bels (typ)
2.8 bels (max)
2.7 bels (typ)
2.8 bels (max)
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2.11Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
T a bl e 5: Rad io fre qu ency environmen t s
Performance
TestDescription
Electrostatic dischargeContact, HCP, VCP: ± 4
± 8 kV
Radiated RF immunity80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse
modulation @ 200 Hz
Electrical fast transient± 1 kV on AC mains, ± 0.5 kV on
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
To determine the warranty for a specific drive, use a web browser to access the following web page:
www.seagate.com/support/ service/
From this page, click on the “Verify Your Warranty” link. You will be asked to provide
the drive serial number, model number (or part number) and country of purchase.
The system will display the warranty information for your drive.
2.13Agency certifica tion
2.13.1Safety certification
The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections
of IEC950 and EN 60950 as tested by TUV North America.
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2.13.2Electromagnetic compatibility
Hard drives that display the CE mark comply with the E uro pean Un ion (E U) re quirem ent s speci fie d i n the Electromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and
the immunity levels are defined by EN 55024.
Seagate uses an inde pend ent laboratory to confirm compl ian ce wit h th e EC di rectives sp ecif ied in t he pr evious
paragraph. Drives are teste d in representa tive end-user systems. Although CE-marked Seagate drives comply
with the directives when used in the test systems, we cannot guarantee that all systems will comply with the
directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O
cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators
should confirm EMC compliance and provide CE marking for their products.
Korean RRL
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with paragraph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic
Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information
and Communication Republic of Korea.
These drives have been tested and com ply with the Electr omag netic Inter fere nce/E lectro magn etic Susce ptibil ity (EMI/EMS) for Class B products. Drives ar e tested in a representative, end-user system by a Korean-recognized lab.
• EUT name (model numbers): DB35 Series
• Certificate number: STX-L3510 (B)
• Trade name or applicant: Seagate Technology
• Manufacturing date: March 2006
• Manufacturer/nationality: Singapore and China
Australian C-Tick (N176)
If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548
1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communication Authority (ACA).
2.13.3FCC verification
These drives are intended to be cont ai ned solely w ithin a personal computer or similar enclosure (no t atta ched
as an external device ). As su ch, ea ch dr ive is co nsidere d to be a suba ssembly even when it is individually mar keted to the customer. As a subassembly, no Federal Communications Commission verification or certification
of the device is required.
Seagate Technology LLC has tested this device in enclosures as described above to ensure that the total
assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B
computing device, pursuant to Subpart J, Part 15 of the FCC rules. Operation with noncertified assemblies is
likely to result in interference to radio and television reception.
Radio and television interference. This equipment generates and uses radio frequency energy and if not
installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio
and television reception.
This equipment is designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular inst allation. If this equipm ent
does cause interference to radio or television, which can be determined by turning the equipment on and off,
you are encouraged to try one or more of the following corrective measures:
• Reorient the receiving antenna.
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DB35.3 Series PATA Product Manual, Rev. B
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• Move the device to one side or the other of the radio or TV.
• Move the device farther away from the radio or TV.
• Plug the computer into a different outlet so that the receiver and computer are on different branch outlets.
If necessary, you should consult your dealer or an experienced radio/television technician for additional sug-
gestions. You may find helpful the following booklet prepared by the Federal Communications Commission:
How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.
2.14Environmental protection
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemica l subst ances .
2.14.1European Union Restriction of Hazardous Substances (RoHS)
The European U nion Restr icti on of Hazard ous S ubst ance s (RoHS ) Dire cti ve re strict s the p resen ce of ch emic al
substances, including Lead (Pb), in electronic products effective July 2006.
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the
rep-resentat ions o f our sup pl iers reg ardi ng the pr esence of RoHS subst ances in these part s and mate rials. Our
supplier contracts require compliance with our chemical substance restrictions, and our suppliers document
their compliance wi th our re quire ment s by pro v iding mat eri al conte nt declar ati ons for all par ts an d mater i als for
the disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion
of any RoHS-regulated substance in such parts or materials.
Seagate also has internal system s in place to en sure ongoing complian ce with the RoHS Directive and all laws
and regulations which restrict chemical content in electronic products. These systems include standard
operat-ing procedures that ensure that restricted substances are not utilized in our manufacturing operations,
labora-tory analytical validation testing, and an internal auditing process to ensure that all standard operating
procedures are complied with.
2.15Corrosive environment
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to
light industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM
B845. However, this accelerated testing cannot duplicate every potential application environment. Users
should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive
chemicals as electronic drive component reliability can be affected by the installation environment. The silver,
copper , nicke l and gold films used i n Seag ate pr oduct s are especi ally sen s itive to the p resen ce of sulf ide, chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components
should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or
exposed to an am bient rel at ive hum idity gr eate r th an 9 5%. Mat erial s used in cabin et fa bri cation , such as vulcanized rubber, that can outgas corrosive compounds should be minimized or eliminated. The useful life of any
electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.
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21
3.0Configuring and mounting the drive
This section contains the specifications and instructions for configuring and mounting the drive.
3.1Handling and static discharge precautions
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic discharge (ESD) hazards. Observe the following standard handling and static-discharge precautions:
Caution:
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal
chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the
entire installation procedure.
• Handle the drive by its edges or frame only.
• The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
• Always rest the drive on a padded, antistatic surface until you mount it in the computer.
• Do not touch the connector pins or the printed circuit board.
• Do not remove the factory- inst al led labels fr om the driv e or cover the m with additional labels. Removal voids
the warranty. Some factory-installed labels contain information needed to service the drive. Other labels are
used to seal out dirt and contamination.
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3.2Breather filter hole precautions
This section contains information regarding the precautions which should be taken regarding the breather filter
hole in Seagate hard disc drives. Proper precautions should be taken to ensure full functionality and prevent
possible damage to the drive.
Breather hole
Do not cover or seal
this hole.
Figure 3 Breather filter hole location
Caution: Do not cover, seal, or insert any object into this hole.
This hole has two purposes:
• To allow condensation inside the hard disc to escape
• To allow air pressure inside the hard disc to equalize with ambient pressure
Note.If this hole is covered, sealed, or penetra ted by any object, the drive reliability may b e compromised
and could lead to permanent damage. Covering or sealing this hole voids the warranty.
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DB35.3 Series PATA Product Manual, Rev. B
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3.3Jumper settings
Options jumper block
3.3.1Master/slave configuration
The options jumper block shown in Figure 4 is used to configure the drive for operation. It is the 8-pin dual
header between the interface connector and the power connector. Use the following settings to configure the
drive as a master or a slave.
Master or single drive. The drive is configured at the factory for a master or single-drive operation with a
jumper set on pins 7 and 8.
Drive as slave. Remove all jumpers.
Drive as master with a non-ATA-compatible slave.
Use this jumper setting only if the drive does not work as a master with no jumpers installed.
*Master or single drive
Drive is slave
Master with non ATA-
compatible slave
*Cable select
1753
684
2
Figure 4 Master/slave jumper settings
3.3.2Cable-select option
Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28,
CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To
enable cable select, set a jumper on pins 5 and 6 as shown in Figure 4. Refer to your computer manual to
determine whether your computer supports this option.
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3.3.3Ultra A TA/100 cable
An 80-conductor 40-pin cable is required to run Ultra DMA mode 3, mode 4, and mode 5. This cable uses
even-numbered conductors connected to the ground pins to improve signal integrity.
Note.
If you are using a 40-pin, 80-conductor
cable, attach the blue connector to the
motherboard, the black connector to the
master drive, and the gray connector
to the slave.
Master
Slave
Figure 5 Ultra ATA cable connectors
Pin 1
Computer
Motherboard
Note.The drive supports bo th host and drive cabl e det ection. T he host det ect s the 80-conductor cable by
sampling pin 34, CBLID–, on the interface bus. The drive detects the 80-conductor cable by sensing a capacitor at the host side through the CBLID– signal. The result is reported in a Fast Rise
Detected bit (bit 13 of word 93 in the Identify drive parameter block).
3.4Drive mounting
You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the
bottom-mounting hol es. See Fi gur e 6 for drive moun ting di mensio ns. Follow these impor t ant moun ting preca utions when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb.).
• Do not use a drive interface cable that is more than 18 inches long.
Figure 6 Mounting dimens ions—top, side an d e nd view
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27
r
Host pin # and signal description
Drive pin #
).
4.0ATA interf ace
These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports
ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–5. The
drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.
You can use a daisy-chain cable to connect two drives to a single AT host bus. For detailed information about
the ATA interface, refer to the draft of AT Attachment with Packet Interface Extension (ATA/ATAPI-7), NCITST13 1410D, subsequently referred to as the Draft ATA-7 Standard.
4.1ATA interface signals and connector pins
Figure 7 on page 27 summarizes the signals on the ATA interface connector that the drive supports. For a
detailed description of these signals, refer to the Draft ATA-7 Standard.
Signal name
–
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Pins 28, 34 and 39 are used for master-slave communication (details shown below
The following table lists ATA-standard commands that the drive supports. For a detailed description of the ATA
commands, refer to the Draft ATA-7 Standard. See “S.M.A.R.T. commands” on page 34 for details and sub-
commands used in the S.M.A.R.T. implementation.
Idle97H or E3
Idle Immediate95H or E1
Initialize Device Parameters91
Read BufferE4
Read DMA C8
Read DMA Extended25
Read DMA Without RetriesC9
Read Log Ext2F
Read MultipleC4
Read Multiple Extended29
Read Native Max AddressF8
Read Native Max Address Extended27
Read Sectors 20
Read Sectors Extended24
Read Sectors Without Retries21
Read Verify Sectors 40
Read Verify Sectors Extended42
Read Verify Sectors Without Retries41
Recalibrate10
Security Disable PasswordF6
Security Erase PrepareF3
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
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DB35.3 Series PATA Product Manual, Rev. B
29
Command nameCommand code (in hex)
Security Erase UnitF4
Security FreezeF5
Security Set PasswordF1
Securit y Un l o ckF2
Seek70
Set FeaturesEF
Set Max AddressF9
H
H
H
H
H
H
H
Note: Individual Set Max Address
commands are identified by the value
placed in the Set Max Features register as defined to the right.
Set Max Address Extended37
Set Multiple ModeC6
H
H
Sleep99H or E6
S.M.A.R.T. Disable OperationsB0H / D9
S.M.A.R.T. Enable/Disable AutosaveB0H / D2
S.M.A.R.T. Enable OperationsB0H / D8
S.M.A.R.T. Execute OfflineB0H / D4
S.M.A.R.T. Read Attribute ThresholdsB0H / D1
S.M.A.R.T. Read DataB0H / D0
S.M.A.R.T. Read Log SectorB0H / D5
S.M.A.R.T. Return St atusB0H / DA
S.M.A.R.T. Save Attribute ValuesB0H / D3
S.M.A.R.T. Write Log SectorB0H / D6
Standby96H or E2
St andby Immediate94H or E0
Write BufferE8
Write DMACA
Write DMA Extended35
Write DMA Withou t Re triesCB
Write Log Extended3F
Write MultipleC5
Write Multiple Extended39
Write Sectors30
Write Sectors Without Retries31
Write Sectors Extended34
H
H
H
H
H
H
H
H
H
H
Address:
Password:
Unlock:
Freeze Lock:
H
H
H
H
H
H
H
H
H
H
H
H
H
Lock:
00
01
02
03
04
H
H
H
H
H
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DB35.3 Series PATA Product Manual, Rev. B
4.1.2Identify Device command
The Identify Device command (command code ECH) transfers information about the drive to the host following
power up. The data is organized as a single 512-byte block of data, whose contents are shown in the Table 6
on page 28. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or
vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings.
The following com mands contain drive-specific features that may not be included in the Draft A T A-7 S tandard.
WordDescriptionValue
Configuration information:
0C5A
• Bit 15: 0 = ATA; 1 = ATAPI
0
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
1Number of logical cylinders16,383
2ATA-reserved0000
3Number of logical heads16
4Retired0000
5Retired0000
6Number of logical sectors per logical track: 63003F
7–9Retired0000
10–19Serial number: (20 ASCII characters, 0000H = none)ASCII
20Retired0000
21Retired0400
22Obsolete0000
23–26Firmware revision (8 ASCII character string, padded with blanks to
x.xx
end of string)
27–46Drive model number
ST3xxxxxACE
(40 ASCII characters, padded with blanks to end of string)
H
H
H
H
H
H
H
H
H
47(Bits 7–0) Maximum sectors per interrupt on Read multiple and
8010
Write multiple (16)
48Reserved0000
49Standard Standby timer, IORDY supported and may be disabled2F00
50ATA-reserved0000
51PIO data-transfer cycle timing mode0200
52Retired0200
53Words 54–58, 64–70 and 88 are valid0007
54Number of current logical cylinders xxxx
55Number of current logical heads xxxx
56Number of current logical sectors per logical trackxxxx
57–58Current capacity in sectorsxxxx
59Number of sectors transferred during a Read Multiple or Write Multi-
xxxx
ple command
H
H
H
H
H
H
H
H
H
H
H
H
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DB35.3 Series PATA Product Manual, Rev. B
31
WordDescriptionValue
60–61Total number of user-addressable LBA sectors available
0FFFFFFFh*
(see Section 2.2 for related information)
*Note: The maximum value allowed in this field is: 0FFFFFFFh
(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137
Gbytes will have 0FFFFFFFh in this field and the actual number of
user-addressable LBAs specified in w ords 100-103. T his is required
for drives that support the 48-bit addressing feature.
62Retired0000
63Multiword DMA active and modes supported
xx07
(see note following this table)
64Advanced PIO modes supported (modes 3 and 4 supported)0003
65Minimum multiword DMA transfer cycle time per word (120 nsec)0078
66Recommended multiword DMA transfer cycle time per word (120
0078
nsec)
67Minimum PIO cycle time without IORDY flow control (240 nsec)00F0
68Minimum PIO cycle time with IORDY flow control (120 nsec) 0078
69–74ATA-reserved0000
75Queue depth0000
76–79SATA-specificxxxx
80Major version number007E
81Minor version number0000
82Command sets supported346B
83Command sets supported7D01
84Command sets support extension4003
85Command sets enabled34xx
86Command sets enabled3xxx
87Command sets enable extension4003
88Ultra DMA support and current mode
xx3F
(see note following this table)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
89Security erase time0000
90Enhanced security erase time0000
92Master password revision codeFFFE
93Hardware reset value (see description following this table)xxxx
95–99ATA-reserved0000
100–103Total number of user-addressable LBA sectors available (see Sec-
tion 2.2 for related information). These words are required for drives
that support the 48-bit addressing feature. Maximum value:
Note.Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported
Note.See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data:
Description (if bit is set to 1)
BitWord 63
0Multiword DMA mode 0 is supported.
1Multiword DMA mode 1 is supported.
2Multiword DMA mode 2 is supported.
8Multiword DMA mode 0 is currently active.
9Multiword DMA mode 1 is currently active.
10Multiword DMA mode 2 is currently active.
BitWord 88
0Ultra DMA mode 0 is supported.
1Ultra DMA mode 1 is supported.
2Ultra DMA mode 2 is supported.
3Ultra DMA mode 3 is supported.
4Ultra DMA mode 4 is supported.
5Ultra DMA mode 5 is supported.
8Ultra DMA mode 0 is currently active.
9Ultra DMA mode 1 is currently active.
10Ultra DMA mode 2 is currently active.
11Ultra DMA mode 3 is currently active.
12Ultra DMA mode 4 is currently active.
13Ultra DMA mode 5 is currently active.
BitWord 93
131 = 80-conductor cable detected, CBLID above V
0 = 40-conductor cable detected, CBLID below VIL
IH
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DB35.3 Series PATA Product Manual, Rev. B
33
4.1.3Set Features command
This command con trols the implement ation of var i ous f eatur es th at th e dr ive sup port s . When th e dr iv e r eceives
this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an interrupt. If the value in the register does not represent a feature that the drive supports, the command is aborted.
Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the
Features register are defined as follows:
02
03
55
82
AA
F1
Enable write cache (default).
H
Set transfer mode (based on value in Sector Count register).
Set PIO mode to default and disable IORDY (PIO mode 2).
H
PIO mode 0
H
PIO mode 1
H
PIO mode 2
H
PIO mode 3
H
PIO mode 4 (default)
H
Multiword DMA mode 0
H
Multiword DMA mode 1
H
Multiword DMA mode 2
H
Ultra DMA mode 0
H
Ultra DMA mode 1
H
Ultra DMA mode 2
H
Ultra DMA mode 3
H
Ultra DMA mode 4
H
Ultra DMA mode 5
H
Note.At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
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DB35.3 Series PATA Product Manual, Rev. B
4.1.4S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines
that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable.
S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T.
commands and implementation, see the Draft ATA-7 Standard.
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4H) that eliminates unnecessary drive returns. The diagnostic software ships with all new drives and is also available at:
http://seatools.seagate.com.
This drive is ship ped wi th S. M.A.R. T. features disabled. You must have a recent BI OS or so ft wa re pa ckage that
supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the
drive uses.
Note.If an appropriate code is not written to the Features Register, the command is aborted and 0x04
(abort) is written to the Error register.
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DB35.3 Series PATA Product Manual, Rev. B
35
5.0Seagate Technology support services
Internet
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is
available 24 hours daily by email for your questions.
my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors. It provides
self-service access to critical applications, personalized content and the tools that allow our partners to
manage their Seagate account functions. Submit pricing requests, orders and returns through a single,
password-protected Web interface-anytime, anywhere in the world.
spp.seagate.com
spp.seagate.com supports Seagate resellers with product information, program benefits and sales tools. You
may register for customiz e d communi cation s that ar e not ava ila ble on the web. The s e communi catio ns cont ai n
product launch, EOL, pricing, promotions and other channel-related information. To learn more about the
benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.
Seagate Service Centers
Presales Support
Our Presales Support staff can help you determine which Seagate products are best suited for your specific
application or computer system, as well as product availability and compatibility.
Technical Support
Seagate technical support is available to assist you online at support.seagate.com or through one of our call
centers. Have your system configuration information and your “ST” model number available.
SeaTDD™ (+1-405-324-3655) is a telecommunications device for the deaf (TDD). Yo u can send questions or
comments 24 hours daily and exchange messages with a technical support specialist during normal business
hours for the call center in your region.
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DB35.3 Series PATA Product Manual, Rev. B
Customer Service Operations
Warranty Service
Seagate offer s worldwi de custom er supp ort for Seagate pro duct s . Seagate distr i butors, OEM s and other direct
customers should contact their Seagate Customer Service Operations (CSO) representative for warrantyrelated issues. Resellers or end users of drive products should contact their place of purchase or Seagate
warranty service for assistance. Have your serial number and model or part number available.
Data Recove ry Services
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery
services labs are currently located throughout the world. . Additional information, including an online request
form and data loss prevention resources, is available at http://services.seagate.com/index.aspx
Authorized Service Centers
Seagate Service Centers are available on a global basis for the return of defective products. Contact your
customer support representative for the location nearest you.
USA/Canada/Latin America support services
For an extensive list of telephone numbers to technical support, presales and warranty service in USA/
Canada/Latin America, including business hours, go to the "Contact Us" page on www.seagate.com.
Global Customer Support
Presales, Technical, and Warranty Support
Call CenterToll-freeDirect dial
USA, Canada,
and Mexico1-800-SEAGATE+1-405-324-4700
Data Recovery Services
Call CenterToll-freeDirect dialFAX
USA, Canada, 1-800-475-01435+1-905-474-21621-800-475-0158
and Mexico+1-905-474-2459
Europe, the Middle East and Africa Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the
Middle East and Africa, go to the "Contact Us" page on www.seagate.com.
Asia/Pacific Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,
go to the "Contact Us" page on www.seagate.com.
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DB35.3 Series PATA Product Manual, Rev. B
37
Index
A
acoustics 16
Active mode 13
agency certification (regulatory) 17
altitude 14
ambient conditions 3
ambient temperature 10, 14
areal density 9
ATA interface 27
ATA-standard commands 28
Australian C-Tick 18
autodetection 1
average seek time 10
B
BPI 9
breather filter hole precautions 22
burst 1
C
cable 24
cable select 1
cable-select option 23
cache 1
case temperature 14
CE mark 18
certification 17
Check Power Mode 28
commands 28
compliance 18
conducted noise 12
conducted RF immunity 17
configuring the drive 21
connector pins 27
connectors 24
contact start-stop cycles 17
Corrosive environmen t 19
CSA C22.2 (950) 17
CSEL 23
C-Tick 18
current profile 12
cycles 17