Product Manual
DB35.3 Series PATA
ST3750840ACE
ST3500830ACE
ST3400820ACE
ST3320820ACE
ST3300820ACE
ST3250820ACE
100427568
Rev. B
August 2007
Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Breather filter hole precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ultra ATA/100 cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.0
ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.1 ATA interface signals and connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
DB35.3 Series PATA Product Manual, Rev. B
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DB35.3 Series PATA Product Manual, Rev. B
List of Figures
Figure 7.
Typical 5V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical 12V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Breather filter hole location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Master/slave jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ultra ATA cable connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
I/O pins and supported ATA signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
DB35.3 Series PATA Product Manual, Rev. B
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DB35.3 Series PATA Product Manual, Rev. B
1.0
Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate®
DB35.3 Series PATA model drives:
ST3750840ACE
ST3500830ACE
ST3400820ACE
ST3320820ACE
ST3300820ACE
ST3250820ACE
These drives provide the following key features:
• 7,200-RPM spindle speed.
• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.
• Tunneling Magnetoresistive (TMR) recording heads.
• 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).
DB35.3 Series PATA Product Manual, Rev. B
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DB35.3 Series PATA Product Manual, Rev. B
2.0
Drive 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:
ST3750840ACE
ST3500830ACE
ST3400820ACE
ST3320820ACE
ST3300820ACE
ST3250820ACE
2.1
Specification summary table
The specifications listed in the table below are for quick reference. For details on specification measurement or
definition, see the appropriate section of this manual.
DB35.3 Series PATA Product Manual, Rev. B
3
Table 1:
Drive specifications summary for 750, 500, and 400 Gbyte models
Drive specification
ST3750840ACE
750
ST3500830ACE
500
ST3400820ACE
400
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
1,465,149,168
512
976,773,168
781,422,768
Bytes per sector
Default sectors per track
Default read/write heads
Default cylinders
63
16
16,383
Recording density, max
Track density, max
926 kbits/in
145 ktracks/in
813 kbits/in
781 kbits/in
2
2
2
Areal density, max
128.2 Gbits/in
114.4 Gbits/in
128.2 Gbits/in
Spindle speed
7,200 RPM
Internal data transfer rate, max
Sustained data transfer rate, max
I/O data-transfer rate, max
ATA data-transfer modes supported
1,030 Mbits/sec
78 Mbytes/sec
100 Mbytes/sec
72 Mbytes/sec
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer
8 Mbytes
Height, max
26.1 mm (1.028 inches)
Width, max
101.6 mm (4.000 inches) +/- 0.010 inches
146.99 mm (5.787 inches)
Length, max
Weight, typical
720 grams
4.16 msec
16 sec
635 grams
Average latency
Power-on to ready, max
Standby to ready, max
Track-to-track seek time, typical
Average seek, read, typical
Average seek, write, typical
Startup current (max) 12V (peak)
Voltage tolerance (including noise)
16 sec
<0.8 msec read; <1.0 msec write
<11.0 msec
<12.0 msec
2.0 amps
5V ± 5%
12V ± 10%
Ambient temperature
operating
0° to 60°C
–40° to 70°C
0° to 62°C
–40° to 70°C
nonoperating
Temperature gradient, per hour max
20°C (operating)
30°C (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient, per hour max
Wet bulb temperature, max
30%
37.7°C (operating)
37.7°C (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating, max
–60.96 m to 12,192 m below mean sea level
(–200 ft. to 40,000+ ft below mean sea level.)
Operational Shock, max
Non-Operational Shock, max
Vibration, operating
63 Gs at 2 msec
300 Gs at 2 msec
5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs
4
DB35.3 Series PATA Product Manual, Rev. B
Drive specification
ST3750840ACE
ST3500830ACE
ST3400820ACE
Vibration, nonoperating
5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
Drive acoustics, sound power
Idle**
2.8 bels (typical)
3.0 bels (max)
2.7 bels (typical)
2.9 bels (max)
CE seek profile
2.9 (typical)
3.0 (max)
2.8 (typical)
2.9 (max)
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 10 bits read
0.68%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to
access the following web page:
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.
Contact start-stop cycles (25°C, 50% rel. humidity)
50,000
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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.
DB35.3 Series PATA Product Manual, Rev. B
5
Table 2:
Drive specifications summary for 320, 300, and 250 Gbyte models
Drive specification
ST3320820ACE
320
ST3300820ACE
300
ST3250820ACE
250
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
625,142,448
512
586,072,368
488,397,168
Bytes per sector
Default sectors per track
Default read/write heads
Default cylinders
63
16
16,383
Recording density, max
Track density, max
781 kbits/in
145 ktracks/in
813 kbits/in
2
Areal density, max
114.4 Gbits/in
Spindle speed
7,200 RPM
Internal data transfer rate, max
Sustained data transfer rate, max
I/O data-transfer rate, max
ATA data-transfer modes supported
1,030 Mbits/sec
72 Mbytes/sec
100 Mbytes/sec
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer
8 Mbytes
Height, max
26.1 mm (1.028 inches)
Width, max
101.6 mm (4.000 inches) +/- 0.010 inches
Length, max
146.99 mm (5.787 inches)
Weight, typical
580 grams
Average latency
4.16 msec
Power-on to ready, max
Standby to ready, max
Track-to-track seek time, typical
Average seek, read, typical
Average seek, write, typical
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
16 sec
16 sec
<0.8 msec (read), <1.0 msec (write)
<11.0 msec
<12.0 msec
2.0 amps
5V ± 5%
12V ± 10%
Ambient temperature
operating
0° to 65°C
nonoperating
–40° to 70°C
Temperature gradient, max
20°C per hour (operating)
30°C per hour (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient, per hour max
Wet bulb temperature, max
30%
37.7°C (operating)
37.7°C (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating, max
–60.96 m to 12,192 m below mean sea level
(–200 ft. to 40,000+ ft. below mean sea level
Operational Shock, max
Non-Operational Shock, max
Vibration, operating
63 Gs at 2 msec
300 Gs at 2 msec
5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs
6
DB35.3 Series PATA Product Manual, Rev. B
Drive specification
ST3320820ACE
ST3300820ACE
ST3250820ACE
Vibration, nonoperating
5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
Drive acoustics, sound power
Idle**
2.7 bels (typical)
2.9 bels (max)
2.5 bels (typical)
2.7 bels (max)
CE seek profile
2.8 bels (typical)
2.9 bels (max)
2.7 bels (typical)
2.8 bels (max)
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)***
Warranty
1 per 10 bits read
0.68%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access the
following web page:
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.
Contact start-stop cycles (25°C, 50% rel. humidity)
50,000
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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.
DB35.3 Series PATA Product Manual, Rev. B
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2.2
Formatted capacity
Formatted
capacity*
Guaranteed
sectors
Model
Bytes per sector
ST3750840ACE
ST3500830ACE
ST3400820ACE
ST3320820ACE
ST3300820ACE
ST3250820ACE
750 Gbytes
500 Gbytes
400 Gbytes
320 Gbytes
300 Gbytes
250 Gbytes
1,465,149,168
976,773,168
781,422,768
625,142,448
586,072,368
488,397,168
512
512
512
512
512
512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environ-
ment and formatting.
2.2.1
LBA 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 48-
bit addressing support of drives with capacities over 137 Gbytes.
2.3
Default logical geometry
Cylinders
16,383
Read/write heads
Sectors per track
16
63
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DB35.3 Series PATA Product Manual, Rev. B
2.4
Recording and interface technology
750GB
500GB
400GB
320GB
300GB
250GB
Interface
ATA
Recording method
Perpendicular
Recording density, KBPI (kbits/inch max)
Track density, KTPI (ktracks/inch avg)
926
813
781
813
145
2
Areal density (Gbits/inch avg)
128.2
7,200
1,030
78
114.4
Spindle speed (RPM) (± 0.2%)
Internal data transfer rate (Mbits/sec max)
Sustained data transfer rate (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
72
100 (Ultra DMA mode 5)
2.5
Physical characteristics
Drive specification
Maximum height
Maximum width
Maximum length
Typical weight
(mm)
(inches)
26.1
1.028
(mm)
(inches)
101.6
4.000 +/- 0.010
(mm)
(inches)
146.99
5.787
ST3320820ACE, ST3300820ACE and ST3250820ACE
ST3500830ACE and ST3400820ACE
ST3750840ACE
580 grams (1.28 lbs)
635 grams (1.40 lbs)
720 grams (1.59 lbs)
Cache Size
8 Mbytes
DB35.3 Series PATA Product Manual, Rev. B
9
2.6
Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured 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.
Typical seek times (msec)
Track-to-track
Read
<0.8
Write
<1.0
Average
<11.0
4.16
<12.0
4.16
Average latency
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 are formatted, benchmark tests that include command
overhead or measure logical seeks may produce results that vary from these specifications.
2.7
Start/stop times
Power-on to Ready (sec)
16 (max)
16 (max)
10 (max)
Standby to Ready (sec)
Ready to spindle stop (sec)
2.8
Power specifications
The drive receives DC power (+5V or +12V) through a four-pin standard drive power connector.
2.8.1 Power 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 ambi-
ent temperature.
• Spinup power
Spinup power is measured fromthe time ofpower-onto thetimethat 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 represents 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 idle mode.
• Idle mode power
10
DB35.3 Series PATA Product Manual, Rev. B
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 dissipation using consumer
storage profile (ST3750840ACE values
shown)
Average
(watts, 25° C)
Average
5V typ amps
Average
12V typ amps
Spinup
—
—
2.0 (peak)
0.540
Idle*
9.30
10.40
8.20
0.80
0.80
0.611
0.719
0.425
0.106
0.106
Idle with offline activity
Operating (CE seeks)
Standby
0.567
0.510
0.023
Sleep
0.023
*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.
DB35.3 Series PATA Product Manual, Rev. B
11
2.8.1.1
Typical current profile
Figure 1
Typical 5V startup and operation current profile
Figure 2
2.8.2
Typical 12V startup and operation current profile
Conducted 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.
12
DB35.3 Series PATA Product Manual, Rev. B
2.8.3
Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
2.8.4
Power-management modes
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:
Power mode
Active
Heads
Spindle
Rotating
Rotating
Stopped
Stopped
Buffer
Tracking
Tracking
Parked
Parked
Enabled
Enabled
Enabled
Disabled
Idle
Standby
Sleep
• Active mode
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 Immediate command. If the host 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 timer delay is established using a Standby or Idle command. In Standby
mode, the drive 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 enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer
is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a
Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters 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 timer reaches zero before any 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.
DB35.3 Series PATA Product Manual, Rev. B
13
2.9
Environmental specifications
Ambient temperature
2.9.1
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 75°C (167°F) within the operating ambient conditions. Rec-
ommended 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
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)
Nonoperating
–40° to 70°C (–40° to 158°F)
2.9.2
Temperature gradient
Operating
Nonoperating
20°C per hour (68°F per hour max), without condensation
30°C per hour (86°F per hour max)
2.9.3
2.9.3.1
Humidity
Relative humidity
Operating
Nonoperating
5% to 90% noncondensing (30% per hour max)
5% to 95% noncondensing (30% per hour max)
2.9.3.2
Wet bulb temperature
Operating
37.7°C (99.9°F max)
37.7°C (99.9°F max)
Nonoperating
2.9.4
Altitude
Operating
–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
Nonoperating
14
DB35.3 Series PATA Product Manual, Rev. B
2.9.5
Shock
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.
2.9.5.1
Operating 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.
2.9.5.2
Nonoperating shock
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 on a nonrepetitive half-sine 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 300 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
2.9.6
Vibration
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.
2.9.6.1
Operating vibration
The following table lists the maximum vibration levels that the drive may experience while meeting the perfor-
mance standards specified in this document.
5–22 Hz
0.25 Gs (Limited displacement)
22–350 Hz
350–500 Hz
0.50 Gs
0.25 Gs
2.9.6.2
Nonoperating vibration
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.
5–22 Hz
0.25 Gs (limited displacement)
22–350 Hz
350–500 Hz
5.0 Gs
1.0 Gs
DB35.3 Series PATA Product Manual, Rev. B
15
2.10
Acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-
surements 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 per second is defined
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
ST3750840ACE
ST3500830ACE
ST3400820ACE
ST3320820ACE
ST3300820ACE
ST3250820ACE
2.8 bels (typ)
3.0 bels (max)
2.9 bels (typ)
3.0 bels (max)
2.8 bels (typ)
3.0 bels (max)
2.9 bels (typ)
3.0 bels (max)
2.7 bels (typ)
2.9 bels (max)
2.8 bels (typ)
2.9 bels (max)
2.7 bels (typ)
2.9 bels (max)
2.8 bels (typ)
2.9 bels (max)
2.5 bels (typ)
2.7 bels (max)
2.7 bels (typ)
2.8 bels (max)
2.5 bels (typ)
2.7 bels (max)
2.7 bels (typ)
2.8 bels (max)
*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.
16
DB35.3 Series PATA Product Manual, Rev. B
2.11
Electromagnetic 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:
Table 5:
Radio frequency environments
Performance
level
Reference
standard
Test
Description
Electrostatic discharge
Radiated RF immunity
Contact, HCP, VCP: ± 4 kV; Air:
± 8 kV
B
EN 61000-4-2: 95
80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse
modulation @ 200 Hz
A
EN 61000-4-3: 96
ENV 50204: 95
Electrical fast transient
Surge immunity
± 1 kV on AC mains, ± 0.5 kV on
external I/O
B
B
A
EN 61000-4-4: 95
EN 61000-4-5: 95
EN 61000-4-6: 97
EN 61000-4-11: 94
± 1 kV differential, ± 2 kV com-
mon, AC mains
Conducted RF immunity
Voltage dips, interrupts
150 kHz to 80 MHz, 3 Vrms,
80% AM with 1 kHz sine
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
C
C
C
B
2.12
Reliability
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Contact start-stop cycles
1 per 10 bits read, max.
0.68% (nominal power, 25°C ambient temperature)
50,000 cycles
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
5 years on distribution units.
Warranty
To determine the warranty for a specific drive, use a web browser to access the fol-
lowing web page:
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.
Preventive maintenance
None required.
2.13
Agency certification
2.13.1
Safety 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.
DB35.3 Series PATA Product Manual, Rev. B
17
2.13.2
Electromagnetic compatibility
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-
tromagnetic 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 independent laboratory to confirm compliance with the EC directives specified in the previous
paragraph. Drives are tested in representative 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 para-
graph 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 comply with the Electromagnetic Interference/Electromagnetic Susceptibil-
ity (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recog-
nized 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 Communi-
cation Authority (ACA).
2.13.3
FCC verification
These drives are intended to be contained solely within a personal computer or similar enclosure (not attached
as an external device). As such, each drive is considered to be a subassembly 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 installa-
tion. However, there is no guarantee that interference will not occur in a particular installation. If this equipment
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.
18
DB35.3 Series PATA Product Manual, Rev. B
• 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 Super-
intendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication num-
ber 004-000-00345-4.
2.14
Environmental protection
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
2.14.1
European Union Restriction of Hazardous Substances (RoHS)
The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical
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-resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our
supplier contracts require compliance with our chemical substance restrictions, and our suppliers document
their compliance with our requirements by providing material content declarations for all parts and materials 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 systems in place to ensure ongoing compliance 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.
2.15
Corrosive 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, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chlo-
ride, 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 ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulca-
nized 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.
DB35.3 Series PATA Product Manual, Rev. B
19
20
DB35.3 Series PATA Product Manual, Rev. B
3.0
Configuring and mounting the drive
This section contains the specifications and instructions for configuring and mounting the drive.
3.1
Handling and static discharge precautions
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic dis-
charge (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-installed labels from the drive or cover them 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.
DB35.3 Series PATA Product Manual, Rev. B
21
3.2
Breather 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 penetrated by any object, the drive reliability may be compromised
and could lead to permanent damage. Covering or sealing this hole voids the warranty.
22
DB35.3 Series PATA Product Manual, Rev. B
3.3
Jumper settings
3.3.1
Master/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.
Options jumper block
*Master or single drive
Drive is slave
Master with non ATA-
compatible slave
*Cable select
7
5
6
3
4
1
2
8
Figure 4
Master/slave jumper settings
3.3.2
Cable-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.
DB35.3 Series PATA Product Manual, Rev. B
23
3.3.3
Ultra ATA/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
Pin 1
Computer
Motherboard
Figure 5
Ultra ATA cable connectors
Note. The drive supports both host and drive cable detection. The host detects the 80-conductor cable by
sampling pin 34, CBLID–, on the interface bus. The drive detects the 80-conductor cable by sens-
ing 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).
3.4
Drive mounting
You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the
bottom-mounting holes. See Figure 6 for drive mounting dimensions. Follow these important mounting precau-
tions 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.
24
DB35.3 Series PATA Product Manual, Rev. B
Notes:
1. Dimensions are shown in inches (mm).
2 Dimensions per SFF-8301 specification.
0.228
(5.79)
0.178
(4.27)
2.23
(56.56)
1.028 max
(26.11)
2.83
(71.80)
3 x 0.25 0.010
(6.35 0.037)
both sides
3.71
(94.35)
1.122 0.02
(28.5 0.51)
2
1.625 0.020
(41.28 0.51)
1.638 0.01
(41.61 0.25)
5.787 max
(146.99)
1.75 0.01
(44.45 0.25)
4.0 0.01
(101.60 0.25)
4 x 6-32 UNC-2B
0.150 (3.81) max. fastener
penetration. 3 threads
minimum engagement.
3 x 6-32 UNC-2B
0.1240 0.01
(3.18 0.25)
0.150 (3.81) max. fastener
penetration both sides. 3 threads
minimum engagement.
Recommended
Recommended
case temperature
measurement location
case temperature
measurement location
3.750 0.01
(95.25 0.25)
4.0 0.01
(101.60 0.25)
Figure 6
Mounting dimensions—top, side and end view
DB35.3 Series PATA Product Manual, Rev. B
25
26
DB35.3 Series PATA Product Manual, Rev. B
4.0
ATA interface
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), NCITS
T13 1410D, subsequently referred to as the Draft ATA-7 Standard.
4.1
ATA 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.
Drive pin #
Host pin # and signal description
Signal name
–
1
2
Reset
1
2
3
4
5
6
7
8
9
Hardware Reset
Ground
Ground
3
DD7
Host Data Bus Bit 7
Host Data Bus Bit 8
Host Data Bus Bit 6
Host Data Bus Bit 9
Host Data Bus Bit 5
Host Data Bus Bit 10
Host Data Bus Bit 4
4
DD8
5
DD6
6
DD9
7
DD5
8
DD10
DD4
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
DD11
DD3
10 Host Data Bus Bit 11
11 Host Data Bus Bit 3
12 Host Data Bus Bit 12
13 Host Data Bus Bit 2
14 Host Data Bus Bit 13
15 Host Data Bus Bit 1
16 Host Data Bus Bit 14
17 Host Data Bus Bit 0
18 Device Data (15:0)
19 Ground
DD12
DD2
DD13
DD1
DD14
DD0
DD15
Ground
(removed)
DMARQ
Ground
DIOW–
STOP
Ground
(No Pin)
20
21 DMA Request
22 Ground
23 Device I/O Write:
Stop Ultra DMA Burst
24 Ground
24
25
DIOR
–
25 Device I/O Read:
Host Ultra DMA Ready:
Host Ultra DMA Data Strobe
26 Ground
27 I/O Channel Ready
Device Ultra DMA Ready
Device Ulta DMA Data Strobe
28 Cable Select
29 DMA Acknowledge
30 Ground
31 Device Interrupt
32 Reserved
33 Host Address Bus Bit 1
34 Passed Diagnostics
Cable Assembly Type Identifier
35 Device Address (2:0)
36 Device Address (2:0)
37 Chip Select (1:0)
38 Chip Select (1:0)
39 Drive Active/Slave Present
40 Ground
HDMARDY
–
HSTROBE
Ground
26
27
IORDY
DDMARDY–
DSTROBE
CSEL
28
29
30
31
32
33
34
–
DMACK
Ground
INTRQ
–
IOCS16
DA1
PDIAG
–
CBLID–
35
36
37
38
39
40
DA0
DA2
CS0
CS1
–
–
–
DASP
Ground
Pins 28, 34 and 39 are used for master-slave communication (details shown below).
Drive 1 (slave)
Drive 0 (master)
Host
28
34
39
28
34
39
CSEL
28
34
39
–
PDIAG
DASP–
Figure 7
I/O pins and supported ATA signals
DB35.3 Series PATA Product Manual, Rev. B
27
4.1.1
Supported ATA commands
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.
Table 6:
Supported ATA commands
Command name
Command code (in hex)
98 or E5
Check Power Mode
Device Configuration Freeze Lock
Device Configuration Identify
Device Configuration Restore
Device Configuration Set
Device Reset
H
H
B1 / C1
H
H
B1 / C2
H
H
H
H
B1 / C0
H
B1 / C3
H
08
92
90
H
H
H
Download Microcode
Execute Device Diagnostics
Flush Cache
E7
H
Flush Cache Extended
Format Track
EA
H
50
H
Identify Device
EC
H
Idle
97 or E3
H
H
Idle Immediate
95 or E1
H
H
Initialize Device Parameters
Read Buffer
91
H
E4
H
Read DMA
C8
H
Read DMA Extended
Read DMA Without Retries
Read Log Ext
25
H
C9
H
H
2F
Read Multiple
C4
H
Read Multiple Extended
Read Native Max Address
Read Native Max Address Extended
Read Sectors
29
H
F8
H
H
H
H
H
H
H
H
H
27
20
24
21
40
42
41
10
Read Sectors Extended
Read Sectors Without Retries
Read Verify Sectors
Read Verify Sectors Extended
Read Verify Sectors Without Retries
Recalibrate
Security Disable Password
Security Erase Prepare
F6
H
H
F3
28
DB35.3 Series PATA Product Manual, Rev. B
Command name
Security Erase Unit
Security Freeze
Security Set Password
Security Unlock
Seek
Command code (in hex)
F4
F5
F1
F2
H
H
H
H
H
70
Set Features
EF
H
Set Max Address
F9
H
Note: Individual Set Max Address
commands are identified by the value
placed in the Set Max Features regis-
ter as defined to the right.
Address:
Password:
Lock:
Unlock:
Freeze Lock:
00
01
02
03
04
H
H
H
H
H
Set Max Address Extended
Set Multiple Mode
37
H
C6
H
Sleep
99 or E6
H
H
S.M.A.R.T. Disable Operations
S.M.A.R.T. Enable/Disable Autosave
S.M.A.R.T. Enable Operations
S.M.A.R.T. Execute Offline
S.M.A.R.T. Read Attribute Thresholds
S.M.A.R.T. Read Data
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Return Status
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Write Log Sector
Standby
B0 / D9
H
H
B0 / D2
H
H
H
H
H
H
H
B0 / D8
H
B0 / D4
H
B0 / D1
H
B0 / D0
H
B0 / D5
H
B0 / DA
H
H
H
H
B0 / D3
H
B0 / D6
H
96 or E2
H
H
H
Standby Immediate
94 or E0
H
Write Buffer
E8
H
Write DMA
CA
H
H
H
Write DMA Extended
Write DMA Without Retries
Write Log Extended
35
H
CB
3F
H
Write Multiple
C5
Write Multiple Extended
Write Sectors
39
30
31
34
H
H
H
H
Write Sectors Without Retries
Write Sectors Extended
DB35.3 Series PATA Product Manual, Rev. B
29
4.1.2
Identify Device command
The Identify Device command (command code EC ) transfers information about the drive to the host following
H
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
The following commands contain drive-specific features that may not be included in the Draft ATA-7 Standard.
Word
Description
Value
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
0C5A
H
0
1
Number of logical cylinders
16,383
2
ATA-reserved
0000
16
H
3
Number of logical heads
4
Retired
0000
0000
H
H
5
Retired
6
Number of logical sectors per logical track: 63
Retired
003F
H
H
7–9
10–19
20
0000
Serial number: (20 ASCII characters, 0000 = none)
ASCII
H
Retired
Retired
Obsolete
0000
0400
0000
x.xx
H
H
H
21
22
23–26
Firmware revision (8 ASCII character string, padded with blanks to
end of string)
27–46
47
Drive model number
(40 ASCII characters, padded with blanks to end of string)
ST3xxxxxACE
(Bits 7–0) Maximum sectors per interrupt on Read multiple and
Write multiple (16)
8010
0000
H
48
Reserved
H
49
Standard Standby timer, IORDY supported and may be disabled
ATA-reserved
2F00
H
H
H
H
H
50
0000
0200
0200
0007
51
PIO data-transfer cycle timing mode
Retired
52
53
Words 54–58, 64–70 and 88 are valid
Number of current logical cylinders
Number of current logical heads
Number of current logical sectors per logical track
Current capacity in sectors
54
xxxx
xxxx
xxxx
xxxx
xxxx
H
55
H
H
H
H
56
57–58
59
Number of sectors transferred during a Read Multiple or Write Multi-
ple command
30
DB35.3 Series PATA Product Manual, Rev. B
Word
Description
Value
60–61
Total number of user-addressable LBA sectors available
0FFFFFFFh*
*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 words 100-103. This is required
for drives that support the 48-bit addressing feature.
62
63
Retired
0000
H
Multiword DMA active and modes supported
(see note following this table)
xx07
H
64
65
66
Advanced PIO modes supported (modes 3 and 4 supported)
Minimum multiword DMA transfer cycle time per word (120 nsec)
0003
0078
0078
H
H
H
Recommended multiword DMA transfer cycle time per word (120
nsec)
67
Minimum PIO cycle time without IORDY flow control (240 nsec)
Minimum PIO cycle time with IORDY flow control (120 nsec)
ATA-reserved
00F0
H
H
H
H
68
0078
0000
0000
69–74
75
Queue depth
76–79
80
SATA-specific
xxxx
H
Major version number
007E
H
H
81
Minor version number
0000
82
Command sets supported
346B
H
83
Command sets supported
7D01
H
84
Command sets support extension
Command sets enabled
4003
H
85
34xx
H
H
86
Command sets enabled
3xxx
87
Command sets enable extension
4003
H
H
88
Ultra DMA support and current mode
(see note following this table)
xx3F
89
Security erase time
0000
0000
H
90
Enhanced security erase time
Master password revision code
Hardware reset value (see description following this table)
ATA-reserved
H
92
FFFE
H
93
xxxx
H
95–99
100–103
0000
H
Total number of user-addressable LBA sectors available (see Sec-
that support the 48-bit addressing feature. Maximum value:
0000FFFFFFFFFFFFh.
ST3750840ACE = 1,465,149,168
ST3500830ACE = 976,773,168
ST3400820ACE = 781,422,768
ST3320820ACE = 625,142,448
ST3300820ACE = 586,072,368
ST3250820ACE = 488,397,168
104–127
128
ATA-reserved
0000
H
H
Security status
Seagate-reserved
0001
129–159
xxxx
H
DB35.3 Series PATA Product Manual, Rev. B
31
Word
160–254
255
Description
ATA-reserved
Integrity word
Value
0000
xxA5
H
H
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)
Bit
0
Word 63
Multiword DMA mode 0 is supported.
Multiword DMA mode 1 is supported.
Multiword DMA mode 2 is supported.
Multiword DMA mode 0 is currently active.
Multiword DMA mode 1 is currently active.
Multiword DMA mode 2 is currently active.
Word 88
1
2
8
9
10
Bit
0
Ultra DMA mode 0 is supported.
Ultra DMA mode 1 is supported.
Ultra DMA mode 2 is supported.
Ultra DMA mode 3 is supported.
Ultra DMA mode 4 is supported.
Ultra DMA mode 5 is supported.
Ultra DMA mode 0 is currently active.
Ultra DMA mode 1 is currently active.
Ultra DMA mode 2 is currently active.
Ultra DMA mode 3 is currently active.
Ultra DMA mode 4 is currently active.
Ultra DMA mode 5 is currently active.
Word 93
1
2
3
4
5
8
9
10
11
12
13
Bit
13
1 = 80-conductor cable detected, CBLID above VIH
0 = 40-conductor cable detected, CBLID below VIL
32
DB35.3 Series PATA Product Manual, Rev. B
4.1.3
Set Features command
This command controls the implementation of various features that the drive supports. When the drive receives
this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter-
rupt. 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
Enable write cache (default).
H
Set transfer mode (based on value in Sector Count register).
H
Sector Count register values:
00
01
08
09
Set PIO mode to default (PIO mode 2).
Set PIO mode to default and disable IORDY (PIO mode 2).
PIO mode 0
H
H
H
H
PIO mode 1
0A
PIO mode 2
H
0B
PIO mode 3
H
0C
PIO mode 4 (default)
Multiword DMA mode 0
Multiword DMA mode 1
Multiword DMA mode 2
Ultra DMA mode 0
H
20
21
22
40
41
42
43
44
45
H
H
H
H
H
H
H
H
H
Ultra DMA mode 1
Ultra DMA mode 2
Ultra DMA mode 3
Ultra DMA mode 4
Ultra DMA mode 5
55
82
Disable read look-ahead (read cache) feature.
Disable write cache.
H
H
AA
Enable read look-ahead (read cache) feature (default).
Report full capacity available
H
F1
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
DB35.3 Series PATA Product Manual, Rev. B
33
4.1.4
S.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 moni-
tors 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 D4 ) that elimi-
H
nates unnecessary drive returns. The diagnostic software ships with all new drives and is also available at:
This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package 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.
Codeinfeatures
register
S.M.A.R.T. command
D0
D2
D3
D4
D5
D6
D8
D9
S.M.A.R.T. Read Data
H
H
H
H
H
H
H
H
S.M.A.R.T. Enable/Disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate (runs DST)
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Write Log Sector
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status
DA
H
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.
34
DB35.3 Series PATA Product Manual, Rev. B
5.0
Seagate 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.
Presales Support:
Technical Support:
Warranty Support:
mySeagate
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 customized communications that are not available on the web. These communications contain
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). You 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.
DB35.3 Series PATA Product Manual, Rev. B
35
Customer Service Operations
Warranty Service
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct
customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-
related 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 Recovery 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/
Global Customer Support
Presales, Technical, and Warranty Support
Call Center
USA, Canada,
and Mexico
Toll-free
Direct dial
1-800-SEAGATE
+1-405-324-4700
Data Recovery Services
Call Center
Toll-free
Direct dial
FAX
USA, Canada,
and Mexico
1-800-475-01435
+1-905-474-2162
1-800-475-0158
+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
Asia/Pacific Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,
36
DB35.3 Series PATA Product Manual, Rev. B
dissipation 11
Index
A
DST 34
acoustics 16
altitude 14
E
autodetection 1
B
BPI 9
enclosures 18
EPRML 9
errors 17
burst 1
C
cable 24
cache 1
certification 17
commands 28
F
compliance 18
frequency 17
connectors 24
G
CSEL 23
C-Tick 18
cycles 17
H
handling 21
heads 1
height 9
humidity 14
I
D
Idle 28
density 9
DB35.3 Series PATA Product Manual, Rev. B
37
40
DB35.3 Series PATA Product Manual, Rev. B
Seagate Technology LLC
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100427568, Rev. B, Printed in U.S.A.
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