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SEAGATE TECHNOLOGY, INC.
Customer Technical Support FAX Network +1 408 438-8137
Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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? United States +1 408 438-8771 ? United Kingdom +44 628 478011 ?
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? Germany +49 89 140-9331 ? Singapore +65 227-2217 ?
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(C)opyright 1993
ST-9235NG
?? 40-pin I/O Connector (* see below)
TOP ?
? 1
o o o o
?P?W?A? :::::::::::.:::::::1 ??? ? ? ?
?
pin-17 removed for keying ?????????????????
Pin assignments for the Seagate 2.5" drive SCSI interface connector
(signal) (pin) (signal)
???????????? pin
Reserved (NC) ? 1 2 ? Reserved (ND) ID1 ID2 ID4
Reserved (NC) ? 3 4 ? Reserved (ND) ID ????????????
ID1- ? 5 6 ? ID2- 0 ? H H H
ID4- ? 7 8 ? LED 1 ? L H H
???????????? 2 ? H L H
???????????? 3 ? L L H
+5v ? 1 2 ? +5v 4 ? H H L
+5v Ret ? 3 4 ? +5v Ret 5 ? L H L
Ground ? 5 6 ? DB0- 6 ? H L L
Ground ? 7 8 ? DB1- 7 ? L L L
Ground ? 9 10? DB2-
Ground ? 11 12? DB3- H = high
Ground ? 13 14? DB4- L = low
Ground ? 15 16? DB5-
Connector Key ? nopin 18? DB6-
Ground ? 19 20? DB7-
Ground ? 21 22? Parity-
Ground ? 23 24? TRMPWR
ATN- ? 25 26? BSY-
Ground ? 27 28? ACK-
RST- ? 29 30? MSG-
Ground ? 31 32? SEL-
I/O- ? 33 34? C/D-
Ground ? 35 36? REQ-
+5v Ret ? 37 38? +5v Ret
+5v ? 39 40? +5v
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ST-9235N
UNFORMATTED CAPACITY _____________________
FORMATTED CAPACITY (xx SECTORS) __________209.8
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________
LOGICAL CYLINDERS ________________________985
LOGICAL HEADS ____________________________13
LOGICAL SECTORS PER TRACK ________________32
HEADS ____________________________________6
DISCS (2.5 in) ___________________________3
MEDIA TYPE _______________________________THIN FILM
HEAD TYPE ________________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (2,7)
INTERNAL TRANSFER RATE (mbits/sec) _______up to 16
SPINDLE SPEED (RPM) ______________________3,449
AVERAGE LATENCY (mSEC) ___________________8.69
BUFFER ___________________________________128 Kbyte
INTERFACE ________________________________SCSI
BYTES PER TRACK __________________________
SECTORS PER DRIVE ________________________409,760
TPI (TRACKS PER INCH) ____________________2,750
BPI (BITS PER INCH) ______________________45,500
FCI (FLUX DENSITY) _______________________30,300
AVERAGE ACCESS (ms) ______________________16
SINGLE TRACK SEEK (ms) ___________________5
MAX FULL SEEK (ms) _______________________27
MTBF (power-on hours) Office _____________150,000
SHOCK (G's) operating/nonoperating _______10/150
NG model with 'SafeRite' ______________100/150
POWER REQUIREMENTS: +5V START-UP (amps) __1.3
POWER MANAGEMENT (Watts):
ACTIVE _______________2.5
STANDBY ______________1.8
SHUTDOWN _____________1.08
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO
IBM AT DRIVE TYPE ________________________0
Physical:
Height (inches/mm): 0.75/19.05
Width (inches/mm): 2.76/70.10
Depth (inches/mm): 4.01/101.85
Weight (ozs/kg): 7.25/0.21
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (08/17/93)