S T 9 1 4 4 A SEAGATE NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 2.5"/SUPERSLIMLINE Cylinders 980| | | Capacity form/unform 128/ MB Heads 15| 15| | Seek time / track 16.0/ 5.0 ms Sector/track 17| 63| | Controller IDE / AT Precompensation Cache/Buffer 64 KB Landing Zone Data transfer rate 1.813 MB/S int Bytes/Sector 512 4.000 MB/S ext Recording method RLL 2/7 operating | non-operating -------------+-------------- Supply voltage 5 V Temperature *C 5 55 | -40 70 Power: sleep 0.3 W Humidity % 8 80 | 5 95 standby 0.3 W Altitude km -0.305 3.048| -0.305 12.192 idle 0.8 W Shock g 10 | 150 seek 1.9 W Rotation RPM 3450 read/write 1.9 W Acoustic dBA 33 spin-up 3.9 W ECC Bit MTBF h 150000 Warranty Month 12 Lift/Lock/Park YES Certificates CSA,FCC,IEC380,IEC435,IEC9... ********************************************************************** L A Y O U T ********************************************************************** SEAGATE ST9051/9052/9077/9096/9144-A PRODUCT MANUAL 36186-002, B +--------------------------------------------------------+43 Ground | |XX Power | |XX p.41/42 | |XX | |XX | |XX | |XX | |.X | |XX | |XX | |XX | |XX | |XX | |X1 | | | |+-+ Master | || | Slave +--------------------------------------------------------++-+ Jumper ********************************************************************** J U M P E R S ********************************************************************** SEAGATE ST9051/9052/9077/9096/9144-A PRODUCT MANUAL 36186-002 Jumper Setting ============== Master/Slave selection ---------------------- Jumper +------+ | A C | | B D | +------+ Jumper for Pins Configuration A and B C and D ------------------------------------------------------------------ OPEN OPEN Drive is Master, no Slave present OPEN CLOSED Drive is Master, Seagate Slave drive present* CLOSED OPEN Drive is Slave to another ST9144A Family Master Drive CLOSED CLOSED Reserved Position (Do not use) * ST157A, ST1144A, ST351A, and ST3144A drive families. A master/slave relationship must be established between drives on the AT bus. Drive 1 is configured as the Master and Drive 2 is configured as the Slave. ********************************************************************** I N S T A L L ********************************************************************** SEAGATE ST9051/9052/9077/9096/9144-A PRODUCT MANUAL 36186-002 B Notes on installation ===================== Drive mounting ST9051A, ST9077A -------------------------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || | | | | | | || x x || +---------------------+ | +-----+ +-----+ | || xx || +-+-----------------+-+ +--+ +--+ || x x || | | || x x || | | || x x || +-----------------+ |x x| x++----------------++x Not Recommended ! Drive mounting ST9052A, ST9096A, ST9144A ------------------------------------------ horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | | | | | | | | | |+----------------+| +-+-----------------+-+ | | | | | | || || +---------------------+ | | | | | | || || | | | | | | || || | | | | | | || || +---------------------+ | +-----+ +-----+ | || || +-+-----------------+-+ +--+ +--+ || || | | || || | | || || +-----------------+ || || ++----------------++ You can mount the drives in any of the approved orientations. Allow a minimum clearance of 0.030-inches should be allowed around the entire perimeter of the drive for cooling airflow. The ST9051A and ST9077A are built with metric mounting screw threads. Drives with metric threads can be distinguished by a notch in the mounting boss. Screw insertion depth is limited to 0.150 inches (3.81 mm) maximum on the side mounting holes and 0.190 inches (4.82 mm) maximum on the bottom mounting holes. The screw size allowed for the bottom-mounting and the side-mounting holes is M3X0.5. Note: Earlier versions of the ST9051A were built with standard threads, size 4-40 UNC-2B. Drives with standard threads do not have a notch cut into the mounting boss. Caution: Do not exceed 3 inch-Ibs torque for mounting screws. The ST9052A, ST9096A and ST9144A are built with metric mounting screw threads. Screw insertion depth is limited to 0.15 inches (3.81 mm) maximum on the side mounting holes and 0.19 inches (4.82 mm) maximum on the bottom mounting holes. The screw size allowed for the bottom-mounting and the side-mounting holes is M3X0.5. Caution: Do not exceed 3 inch-Ibs torque for mounting screws. AT interface ------------ The ST9144 family AT drives use the industry-standard IBM AT task file interface. The drives support both 8-bit and 16-bit data transfer and have no DMA capability. All data transfers are done through programmed I/O. Up to two drives can be daisy-chained (Master/Slave) on the same host bus. AT interface cable ------------------ Maximum cable length is 18 inches (457 mm). It is recommended that the connectors be keyed by inserting a plug into the pin-20 location of each interface connector. AT interface connector requirements ----------------------------------- The drive connector is a 44-conductor connector with 2 rows of 22 male pins on 0.079 inch (2 mm) centers. The mating cable connector is a 44-conductor nonshielded connector with 2 rows of 22 female contacts on 0.079 inch (2 mm) centers. It is recommended that the connectors be keyed by inserting a plug into the pin 20 location of each interface connector. Strain relief is recommended. Recommended connector: Molex part number 87259-4413 or equivalent. DC power specifications ----------------------- Power is supplied to the drive through pin 41 and pin 42, ground through pin 43 in the interface connector. Pin 44 is reserved. Remote LED ---------- The drive indicates activity to the host through the /DASP line (pin 39) on the AT interface. This line may be connected to a drive status indicator driving an LED to 5 VDC. This line has a 30 mA nominal current limit. Shipping zone ------------- At power-down the read/write heads automatically move to the shipping zone. The head and slider assembly park indide of the maximum data cylinder. Input Noise ----------- Maximum permitted input noise ripple 150 mV (peak-to-peak) Maximum permitted input noise 10 MHz Onboard drive diagnostics ------------------------- At power-on the drive executes a series of diagnostics tests. A series of LED flashes on the system panel indicates a failure. Error Codes LED Flashes Drive Error Condition ------------------------------------------ 1 80C198 Microprocessor Error 2 80C198 ROM Checksum Error 3 AT Interface Chip Error 5 External RAM Error 6 Buffer RAM Error ********************************************************************** F E A T U R E S ********************************************************************** SEAGATE ST9051/9052/9077/9096/9144-A PRODUCT MANUAL 36186-002 B UL/CSA listing -------------- The ST9144 family drives are listed in accorance with UL 1950 and CSA C22.2 (950-M-89), and meet all applicable sections of IEC 380, IEC 435, IEC 950, VDE 0806/08.81 and EN 60950 as tested by TUV-Rheinland, North America. Warning: The ST9144 family drives are devices intended to be contain- ed solely within a personal computer or similar enclosure and not attached as an unenclosed external device. As such, the drive is considered to be a subassembly even when it is individually marketed to the customer. Acoustics --------- ST9052A: 30dBA maximum (sound pressure) in Idle mode, at 1 meter. All other ST9144 family drives: 33 dBA maximum (sound pressure) in Idle mode, at 1 meter. Seek time definition -------------------- Seek time is a true statistical average (at least 5,000 measurements) of seek time, less overhead. All measurements are made with nominal power at sea level and 25*C ambient temperature. Track-to-track 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. Note. Host overhead varies between systems and cannot specified. Controller overheads for the drives is 1 msec typical. Seek Time | |ST9144A| | --------- | |ST9096A| | |ST9051A|ST9052A|ST9077A | ----------------------------------+-------+-------+--------+ Track-to-Track msec. typ. | 6 | 5 | 5 | msec. max. | 8 | 8 | 8 | Average msec. typ. | 19 | 16 | 16 | Average msec. max. | 20 | 19 | 19 | Full-stroke msec. typ. | 36 | 27 | 27 | msec. max. | 38 | 30 | 30 | Latency msec. avg. | 8.26 | 8.70| 8.46 | ----------------------------------+-------+-------+--------+ AT bus signal levels -------------------- Signals driven by the drive must have the following output character- istics at the drive connector: Logic Low 0 to 0.4 VDC Logic High 2.5 to 5.25 VDC Signals received by the drive must have the following input characteristics, measured at the drive connector: Logic Low 0 to 0.8 VDC Logic High 2.0 to 5.25 VDC Reliability ----------- MTBF 150,000 POH (nominal power, at sea level, 25*C ambient temperature). PM Not required MTTR 10 minutes Service Life 5 years