seagate ST9235A, ST9235AG, ST9145A, ST9145AG, ST9080A User manual
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ST9235 Family:
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ST9080A, ST9145A, ST9145AG
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ST9235A, ST9235AG
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AT Interface Drives
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Product Manual
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ST9235 Family
Product Manual
ST9080A,
ST9145A,ST9145AG
ST9235A, ST9235AG
AT Interface Drives
36206-001, Rev. B
19 April 1993
1993 Seagate Technology, Inc. All rights reserved
Publication Number: 36206-001, Rev. B
Seagate
®
, Seagate Technology®, and the Seagate logo are registered
trademarks of Seagate Technology, Inc. Other product names are registered trademarks or trademarks of their owners.
Seagate reserves the right to change, without notice, product offerings
or specifications. No part of this publication may be reproduced in any
form without written permission of Seagate Technology, Inc.
ST9235 Family Product Manual, Rev. B iii
Contents
1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . 1
1.2 Physical organizat ion . . . . . . . . . . . . . . . . . . . . 1
1.3 Logical organization . . . . . . . . . . . . . . . . . . . . . 1
1.4 Default logical geometry . . . . . . . . . . . . . . . . . . . 2
1.5 Functional specifications . . . . . . . . . . . . . . . . . . 2
1.6 Physical dimens ions . . . . . . . . . . . . . . . . . . . . 3
1.7 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.8 Spinup times (typical) . . . . . . . . . . . . . . . . . . . . 4
1.9 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.10 Environment . . . . . . . . . . . . . . . . . . . . . . . . 4
1.10.1 Acoustics . . . . . . . . . . . . . . . . . . . . . . . 4
1.10.2 Ambient temperature . . . . . . . . . . . . . . . . . 4
1.10.3 Temperature gradient . . . . . . . . . . . . . . . . . 4
1.10.4 Relative humidity . . . . . . . . . . . . . . . . . . . 5
1.10.5 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 5
1.10.6 Shock . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.10.7 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 6
1.11 Power specifications . . . . . . . . . . . . . . . . . . . . 6
1.11.1 Power management modes . . . . . . . . . . . . . . 6
1.11.2 Power usage . . . . . . . . . . . . . . . . . . . . . 8
1.11.3 Input power noise . . . . . . . . . . . . . . . . . . . 11
1.12 UL/CSA listing . . . . . . . . . . . . . . . . . . . . . . . 11
1.13 FCC verification . . . . . . . . . . . . . . . . . . . . . . 11
2.0 Drive handling and mounting . . . . . . . . . . . . . . . . 13
2.1 Handling and static-discharge precautions . . . . . . . . . 13
2.2 Mounting the ST9235 family drives . . . . . . . . . . . . . 13
iv ST9235 Family Product Manual, Rev. B
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Drive configuration . . . . . . . . . . . . . . . . . . . . . 19
3.1.1 Master/slave selection . . . . . . . . . . . . . . . . 19
3.1.2 Remote LED . . . . . . . . . . . . . . . . . . . . . 19
3.1.3 Onboard drive diagnostics . . . . . . . . . . . . . . 23
3.2 ATA bus signal levels . . . . . . . . . . . . . . . . . . . 23
3.3 ATA interface cable . . . . . . . . . . . . . . . . . . . . 23
3.4 ATA interface connector . . . . . . . . . . . . . . . . . . 23
3.4.1 ATA interface connector pin assignments . . . . . . 25
3.5 ATA interface command description . . . . . . . . . . . . 26
3.5.1 Standby Immediate (E0
3.5.2 Idle Immediate (E1
3.5.3 Standby (E2
3.5.4 Idle (E3
/ 96H ) . . . . . . . . . . . . . . . . . 29
H
/ 97H ) . . . . . . . . . . . . . . . . . . . 31
H
3.5.5 Check Power Mode (E5
3.5.6 Set Sleep Mode (E6
3.5.7 Identify Drive (EC
3.5.8 Set Features (EF
H
H
3.5.9 Active Immediate (F9
3.5.10 Idle and Set Idle Timer (FA
/ 94H) . . . . . . . . . . . . 27
H
/ 95H / F8H) . . . . . . . . . . . 28
H
/ 98H ) . . . . . . . . . . . 32
H
/ 99H) . . . . . . . . . . . . . 33
H
) . . . . . . . . . . . . . . . . . . 34
) . . . . . . . . . . . . . . . . . . 36
) . . . . . . . . . . . . . . . . 37
H
H
3.5.11 Active and Set Idle Timer (FB
3.5.12 Check Idle Mode (FD
) . . . . . . . . . . . . . . . 40
H
) . . . . . . . . . . . . 38
) . . . . . . . . . . . 39
H
ST9235 Family Product Manual, Rev. B v
Figures
Figure 1. Typical startup and operation current profile for
the ST9080A . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2. Typical startup and operation current profile for
the ST9145A and the ST9145AG . . . . . . . . . . . . 10
Figure 3. Typical startup and operation current profile for
the ST9235A and the ST9235AG . . . . . . . . . . . . 10
Figure 4. Acceptable mounting orientations for the ST9235 family
drives . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5. ST9080A mounting dimensions . . . . . . . . . . . . . . 15
Figure 6. ST9145A and ST9145AG mounting dimens ions . . . . . 16
Figure 7. ST9235A and ST9235AG mounting dimens ions
(MCC mounting version) . . . . . . . . . . . . . . . . . 17
Figure 8. ST9235A and ST9235AG mounting dimens ions
(non-MCC mounting version) . . . . . . . . . . . . . . . 18
Figure 9. ST9080A connector setup . . . . . . . . . . . . . . . . 20
Figure 10. ST9145A and ST9145AG connector setup . . . . . . . 21
Figure 11. ST9235A and ST9235AG connector setup . . . . . . . 22
Figure 12. ATA interface connector diagram . . . . . . . . . . . . 24
Figure 13. ATA interface signal summary . . . . . . . . . . . . . 25
ST9235 Family Product Manual, Rev. B 1
1.0 Drive specifications
1.1 Formatted capacity
ST9145A
ST9080A
Guaranteed Mbytes 64.0 127.9 209.7
Guaranteed sectors 125,096 249,900 409,760
Bytes per sector 512 512 512
ST9145AG
1.2 Physical organization
ST9235A
ST9235AG
ST9145A
ST9080A
Read/Write heads 2 4 6
Discs 1 2 3
ST9145AG
ST9235A
ST9235AG
1.3 Logical organization
The ST9235 family drives support all head, cylinder, and sector geometries, subject to the maximums specified below, and to the following
condition:
(sectors) × (heads) × (cylinders) ≤ total sectors per drive
Sectors per track (max) 63
Read/Write heads (max) 15
Cylinders (max) Unrestricted
2 ST9235 Family Product Manual, Rev. B
1.4 Default logical geometry
ST9145A
ST9080A
Sectors per track 38 17 32
Read/Write heads 4 15 13
Cylinders 823 980 985
ST9145AG
ST9235A
ST9235AG
1.5 Functional specifications
ST9145A
ST9080A
Interface ATA ATA ATA
Recording method RLL (2,7) RLL (2,7) RLL (2,7)
Recording density (BPI) 45,500 45,600 45,500
Flux density (FCI) 30,300 30,400 30,300
Track density (TPI) 2,650 2,650 2,750
ST9145AG
ST9235A
ST9235AG
Spindle speed
(RPM ± 0.5%)
Internal data transfer rate
(Mbits per sec max—ZBR)16
I/O data transfer rate
(Mbits per sec max—ZBR)
Interleave 1:1 1:1 1:1
Cache buffer (Kbytes) 32 64 64
3,449
4 4 4
3,449 3,449
16
16
ST9235 Family Product Manual, Rev. B 3
1.6 Physical dimensions
ST9080A
ST9145A
ST9145AG
ST9235A
ST9235AG
Height (max) inches
(mm)
Width (max) inches
(mm)
Depth (max) inches
(mm)
Weight (max) ounces
(kg)
0.49
(12.50)
2.76
(70.10)
4.01
(101.85)
4.80
(0.136)
0.75
(19.05)
2.76
(70.10)
4.01
(101.85)
6.50
(0.185)
0.75
(19.05)
2.76
(70.10)
4.01
(101.85)
7.25
(0.210)
1.7 Seek time
Seek time is a true statistical average (at least 5,000 measurements) of
seek time, less controller overhead. All measurements are made with
nominal power at sea level and 25°C ambient temperature. Track-totrack seek time is an average of all possible single-track seeks in both
directions. Average seek time is measured by executing seek commands
between random sector addresses. Full-stroke seek time is one-half the
time needed to seek from the first data sector to the maximum data sector
and back to the first sector. Host overhead varies between systems and
cannot be specified.
Seek times for the ST9235 family drives are:
Track-to-track
typical (msec)
maximum (msec)
5
8
Average
typical (msec)
maximum (msec)
Full-stroke
typical (msec)
maximum (msec)
Average latency (msec) 8.7
16
19
27
30
4 ST9235 Family Product Manual, Rev. B
1.8 Spinup times (typical)
Power-on to Ready (sec) 4
Standby to Ready (sec) 2
1.9 Reliability
Nonrecoverable read errors 1 per 1013 bits read
Mean time between failures 150,000 power-on hours
(nominal power, at sea level, 25°C
ambient temperature)
Preventative maintenance Not required
Mean time to repair 10 minutes
Service life 5 years
1.10 Environment
1.10.1 Acoustics
ST9080A, ST9145A and ST9145AG:
30 dBA maximum (sound pressure) in Idle mode at 1 meter.
ST9235A and ST9235AG:
33 dBA maximum (sound pressure) in Idle mode at 1 meter.
1.10.2 Ambient temperature
Operating 5° to 55°C (41° to 131°F)
Nonoperating –40° to 70°C (–40° to 158°F)
1.10.3 Temperature gradient
Operating 30°C / hr (54°F / hr) max, without condensation
Nonoperating 30°C / hr (54°F / hr) max, without condensation
ST9235 Family Product Manual, Rev. B 5
1.10.4 Relative humidity
Operating 8% to 80% noncondensing
Nonoperating 8% to 90% noncondensing
Transit (as packaged from factory) 5% to 95% noncondensing
Maximum wet bulb temperature 26°C (78.8°F)
1.10.5 Altitude
Operating –1,000 ft to 10,000 ft (–304.8 m to 3,048 m)
Nonoperating –1,000 ft to 40,000 ft (–304.8 m to 12,192 m)
1.10.6 Shock
All shock specifications assume that the drive is mounted in an approved
orientation with the input levels at the drive mounting screws. Operating
shock specifications vary between the “A” and “AG” drives, as described
below. The nonoperating specifications assume that the read/write
heads are positioned in the shipping zone.
Note. At power-down, the read/write heads automatically move to the
shipping zone. The head and slider assembly park inside of the
maximum data cylinder. When power is applied, the heads recalibrate to Track 0.
1.10.6.1 Operating shock
The maximum shock the ST9080A, ST9145A and ST9235A can experience during operation without incurring nonrecoverable data errors is 2
Gs; the maximum operating shock they can experience without damage
to the drive is 10 Gs (based on half sine-wave shock pulses of 11 msec).
The ST9145AG and ST9235AG, with their SafeRite
experience a maximum operating shock of 100 Gs without nonrecoverable data errors (based on half-sine shock pulses of 2 through 11 msec).
components, can
1.10.6.2 Nonoperating shock
The maximum nonoperating shock that ST9235 family drives can experience without incurring physical damage or degradation in performance
when the drive is subsequently put into operation is 150 Gs (based on
half-sine shock pulses of 11 msec).
6 ST9235 Family Product Manual, Rev. B
1.10.7 Vibration
All vibration specifications assume that the drive is mounted in an
approved orientation with the input levels at the drive mounting screws.
The nonoperating specifications assume that the read/write heads are
positioned in the shipping zone.
1.10.7.1 Operating vibration
The following table lists maximum vibration levels that ST9235 family
drives may experience without incurring physical damage or degraded
performance.
5–22 Hz 0.020-inch displacement (double amplitude)
22–400* Hz 0.5 Gs acceleration (peak)
400*–22 Hz 0.5 Gs acceleration (peak)
22–5 Hz 0.020-inch displacement (double amplitude)
*500 Hz typical
1.10.7.2 Nonoperating vibration
The maximum nonoperating vibration that the ST9235 family drives can
experience without incurring physical damage or degradation in performance when the drive is subsequently put into operation:
5–22 Hz 0.162-inch displacement (double amplitude)
22–500 Hz 4 Gs acceleration (peak)
500–22 Hz 4 Gs acceleration (peak)
22–5 Hz 0.162-inch displacement (double amplitude)
1.11 Power specifications
ST9235 family drives receive DC power (+5V) through pin 41 and pin 42
of the ATA interface connector; pin 43 is the ground.
ST9235 Family Product Manual, Rev. B 7
1.11.1 Power management modes
Power management is required for low-power portable systems. In most
systems, you can control power management through the system setup
program. The ST9235 family drives feature several power management
modes, which are described briefly in the following paragraphs:
Active mode. The drive is in Active mode during the read/write and seek
operations.
Idle-Ready mode. In Idle-Ready mode, the spindle is up to speed and
the heads are on track at the last track accessed. The drive accepts all
commands, and returns to Active mode when disc access is necessary.
Idle mode. At power-on, the drive sets the idle timer to enter Idle mode
after 5 seconds of inactivity (default setting). In Idle mode, the spindle
remains up to speed. The heads are parked away from the data zones
for maximum data safety. 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 standby timer has been set by the
host system, the drive can also enter Standby mode automatically after
the drive has been in Idle mode for a specifiable length of time. The
standby timer delay is system dependent, and is usually established
using the system setup utility. In Standby mode, the buffer remains
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 when a Sleep Immediate
command has been received from the host. The heads are parked and
the spindle is at rest. The drive leaves Sleep mode when a Soft Reset or
Hard Reset command is sent from the host. After a soft reset has been
received, the drive exits Sleep mode and enters Standby mode with all
current emulation and translation parameters intact. Following a hard
reset, the drive returns to Active mode.
Idle and Standby Timers. The drive sets the default time delay for the
idle timer at power-on. In most systems, you can set this delay using the
system setup utility. Each time the drive performs an Active function
(read, write or seek), the idle timer is reinitialized, and begins the
countdown from the specified delay time to zero. If the idle timer reaches
zero before any drive activity is required, the drive makes a transition to
Idle mode. The drive then begins the standby timer countdown, if the host
has set the standby timer. If the host has not set the standby timer, the
8 ST9235 Family Product Manual, Rev. B
drive remains in Idle mode. 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.
1.11.2 Power usage
Power requirements for the ST9235 family drives are listed below. Typical
power measurements are taken at 5V and zero ripple on a 10 MHz AT
system. Typical Active mode current and power specifications assume
nominal voltages applied, 25°C ambient temperature at sea level, with the
spindle rotating (two spindle rotations between each operation) and the drive
in default logical geometry. Specification power maximums are measured
at 5.25V. Maximum seek currents and power usage are measured on
repetitive one-third-stroke buffered seeks with one-half spindle rotation
between each seek. Maximum read/write currents and power are measured
with one-half spindle rotation between each operation. Transient state
changes may cause current peaks above the maximum levels.
1.11.2.1 ST9080A power usage
RMS watts
Mode
Spinup 3.2 5.0 0.9
Active
Seeking
Read/Write
Idle 0.7 0.9 0.17
Standby 0.17 0.25 0.05
Sleep 0.17 0.25 0.05
(typical)
1.8
1.8
RMS watts
(maximum)
2.1
2.1
RMS amps
(maximum)
(2 sec peak)
0.40
0.40
1.11.2.2 ST9145A and ST9145AG power usage
RMS watts
Mode
Spinup 3.9 5.6 1.0
(typical)
RMS watts
(maximum)
RMS amps
(maximum)
(2 sec peak)
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