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Marathon 2250
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Marathon 1680
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ATA Interface Drives
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Product Manual
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Marathon 2250 (ST92255AG) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Marathon 1680 (ST91685AG) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATA Interface Drives .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Man
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© 1997 Seagate Technology, Inc. All rights reserved Publication Number: 36337-101, Rev. B, March 1997 Seagate, Seagate Technology and the Seagate logo are registered trademarks of Seagate Technology, Inc. Marathon and SafeRite are trademarks of Seagate Technology. 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 w
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Marathon 2250 and Marathon 1680 Product Manual iii Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specification summary table . . . . . . . . . . . . . . . . . . . 2 1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . 5 1.1.1 Default logical geometry . . . . . . . . . . . . . . .
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iv Marathon 2250 and Marathon 1680 Product Manual 1.11.2 Electromagnetic Compatibility . . . . . . . . . . . . 15 1.11.3 FCC verification . . . . . . . . . . . . . . . . . . . . 15 2.0 Drive mounting and configuration . . . . . . . . . . . . . . 17 2.1 Handling and static-discharge precautions . . . . . . . . . 17 2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . 17 2.2.1 Master/slave configuration .
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Marathon 2250 and Marathon 1680 Product Manual v Figures Figure 1. Typical startup and operation current profile. . . . . . . . 9 Figure 2. Connector and master/slave jumper setup . . . . . . . . 18 Figure 3. Drive mounting dimensions—side and bottom view. . . . 20 Figure 4. Drive mounting dimensions—end view . . . . . . . . . . 21 Figure 5. ATA Interface connector dimensions . . . . . . . . . . . 23 Figure 6. I/O pins and supported ATA signals . . . . . .
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vi Marathon 2250 and Marathon 1680 Product Manual
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Marathon 2250 and Marathon 1680 Product Manual 1 Introduction The Marathon 2250 (ST92255AG) and Marathon 1680 (ST91685AG) provide very high storage capacity in a small, 17-mm hard disc drive. Key Features: • Low power consumption • Compact, SFF-8200-compatible form-factor • High rotational speed for fast internal data transfer • Quiet operation • SafeRite shock protection • Support for PIO modes 0, 1, 2, 3 and 4, as well as single-word and multiword DMA modes 0, 1 and 2 • High instantaneous (b
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2 Marathon 2250 and Marathon 1680 Product Manual Specification summary table The specifications listed in this table are for quick reference. For details on a specification measurement or definition, see the appropriate section of this manual. Marathon Marathon Drive Specification 2250 1680 6 Guaranteed Mbytes (1 Mbyte=10 bytes) 2,250 1,680 Guaranteed sectors (LBA mode) 4,394,940 3,282,490 Bytes per sector 512 Default sectors per track 63 63 Default read/write heads 16 16 Default cylinders 4,36
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Marathon 2250 and Marathon 1680 Product Manual 3 Marathon Marathon Drive Specification 2250 1680 Power-on to ready (sec typical) 3.5 Standby to ready (sec typical) 2 Spinup current (peak) 1.3 amps Read/Write power and current (typical) 2.5 watts, 0.5 amps Seek power and current (typical) 2.5 watts, 0.5 amps Idle mode power and current (typical) 1.2 watts, 0.24 amps Standby mode power and current (typical) 0.3 watts, 0.06 amps Sleep mode power and current (typical) 0.1 watts, 0.02 amps Voltage to
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4 Marathon 2250 and Marathon 1680 Product Manual
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Marathon 2250 and Marathon 1680 Product Manual 5 1.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 40°C, at sea level and nominal power. 1.1 Formatted capacity Marathon 2250 Marathon 1680 Guaranteed Kbytes 2,250,209 1,680,634 Guaranteed sectors 4,394,940 3,282,490 (LBA mode) Bytes per sector 512 512 Note. DOS systems are not able to access more than 528 Mbytes unless: 1) the host system supports and is configured for LBA addressing or f
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6 Marathon 2250 and Marathon 1680 Product Manual The Marathon 1680 supports any translation geometry that satisfies all of the following conditions: • Sectors per track ≤ 63 • Read/write heads ≤ 16 • (Sectors per track) × (read/write heads) × (cylinders) ≤ 3,282,048 1.2 Physical organization Marathon 2250 Marathon 1680 Read/Write heads 10 8 Discs 5 4 1.3 Recording and interface technology Interface ATA Recording method 8/9 Recording density (bits/inch) 120,000 Track density (tracks/inch) 5,555
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Marathon 2250 and Marathon 1680 Product Manual 7 1.4 Physical characteristics Marathon 2250 Marathon 1680 Maximum height (inches) 0.676 0.676 (mm) (17.2) (17.2) Maximum width (inches) 2.76 2.76 (mm) (70.1) (70.1) Maximum length (inches) 3.955 3.955 (mm) (100.45) (100.45) Typical weight (ounces) 7.19 7.05 (grams) (204) (200) Note. Maximum length excludes I/O connector pins that may extend up to 0.015 inches beyond the edge of the head/disc assembly, per SFF 8004 specification. 1.5 Seek time All s
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8 Marathon 2250 and Marathon 1680 Product Manual 1.6 Start times Power-on to Ready (sec) 3.5 typical, 7 max Standby to Ready (sec) 2 typical, 3 max Idle to Ready (sec) 0.4 max 1.7 Power specifications The drive receives DC power (+5V) through pin 41 and pin 42 of the AT interface connector. 1.7.1 Power consumption Power requirements for the drive are listed in the table below. Typical power measurements are based on an average of drives tested under nominal conditions, using 5.0V input voltage
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Marathon 2250 and Marathon 1680 Product Manual 9 Current (mA) 1,400 Drive ready 1,200 1,000 Upload code Idle Standby mode Active mode Sleep 800 mode mode 600 400 Spinup 200 0 01 2345 56 78 9 10 11 12 Time (seconds) Figure 1. Typical startup and operation current profile 1.7.1.1 Typical current profile Figure 1 shows a projected drive startup and operation current profile for the Marathon 2250 and the Marathon 1680. Note. The peaks in Figure 1 are the result of inductive kickback from the commut
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10 Marathon 2250 and Marathon 1680 Product Manual • 100 mV peak-to-peak triangular-wave injected noise at the power connector. The frequency is 100 KHz to 10 MHz with equivalent resistive loads. Note. Equivalent resistance (9.26 ohms) is calculated by dividing the nominal voltage (5V) by the typical RMS read/write current (0.54 amps). 1.7.4 Voltage tolerance Voltage tolerance (including noise): +5 volts, ± 5% 1.7.5 Power-management modes Seagate’s Marathon drives provide programmable power mana
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Marathon 2250 and Marathon 1680 Product Manual 11 When the standby timer expires, the drive makes the transition to the Standby mode. The drive requires approximately 100–200 msec to return to Active mode from Idle mode. Standby mode. The drive enters Standby mode when the host sends a Standby or Standby Immediate command. If the standby command has set the standby timer, the drive enters Standby mode automatically after the drive has been inactive for the specified length of time. In Standby m
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12 Marathon 2250 and Marathon 1680 Product Manual 1.8 Environmental tolerances 1.8.1 Ambient temperature Operating 5° to 55°C (41° to 131°F) Nonoperating –40° to 70°C (–40° to 158°F) Caution. This drive needs sufficient airflow so that the maximum surface temperature at the center of the top cover of the drive does not exceed 62 degrees C (144 degrees F). 1.8.2 Temperature gradient Operating 30°C/hr (86°F/hr) max, without condensation Nonoperating 30°C/hr (86°F/hr) max, without condensation 1
