SFD-321B/LFHSE - Computer Accessories SAMSUNG - Free user manual and instructions

USER MANUAL SFD-321B/LFHSE SAMSUNG

Liaobu Town Dongguan City

Guangdong Province, China

FLOPPY DISK DRIVE SPECIFICATION	PAGE1
	MODEL	SFD-321B
CONTENTS
1. INTRODUCTION1.1Application1.2DiskUsed
2. GENERAL SPECIFICATIONS2.1Performance2.2EnvironmentalConditions2.3Reliability2.4PowerSupply2.5PhysicalSpecifications
3. INSTALLATION
4. ELECTRICAL INTERFACE4.1SignalInterface4.2PowerInterface4.3InterfaceConnectors
5. SIGNAL CHARACTERISTICS5.1SignalLevel5.2RecommendedInterfaceCircuit5.3InputSignals5.4OutputSignals
6. TIMING DIAGRAM6.1SeekOperationTiming6.2Read/WriteOperationTiming
FLOPPY DISK DRIVE SPECIFICATION	PAGE2
	MODEL	SFD-321B

7. SAFETY STANDARDS

8. PACKAGING DESCRIPTION

8.1 LabelDescription
8.2 Packaging Method
8.3PalletDimensionandtheMethod

9. OPTION SELECTION

9.1 TraceOptions
9.2 OtherOptions(BuyerSelection)

10. GENERAL COMMENT

※ LIST of FIGURES

Figure2-1. PhysicalDimensions(WithBezelType)

Figure 2-2. Physical Dimensions (Without Bezel Type)

Figure3-1. Installation

Figure4-1. Signal Interface Connector and Cable Side Connector

Figure4-2. PowerInterface Connector and Cable Side Connector

Figure4-3. RearViewofFDD

Figure8-1. PackagingMethod

Figure8-2. PalletDimension&Method

FLOPPY DISK DRIVE SPECIFICATION	PAGE3
	MODEL	SFD-321B

1. INTRODUCTION

1.1 Application

This manual shall be applied for SAMSUNGSFD-321B-doubleside, dual density (option: 3 mode), 3.5 inch microfloppy disk drive (hereinafter referred to as "FDD").

1.2 Disk Used

3.5inchmicrofloppydisks(hereinafterreferredtoas"DISK"), the useofwhichwillbemutuallyagreedbetweenthecustomersand SAMSUNG, shallbeused.

FLOPPY DISK DRIVE SPECIFICATION	PAGE4
	MODEL	SFD-321B

2. GENERAL SPECIFICATIONS

2.1 Performance

ITEM			LOW DENSITY STANDARD 1MB	HIGH DENSITY STANDARD 2MB	HIGH DENSITY *OPTION* 1.6MB
Capacity (KBytes)	Unformatted	PerDisk100020	001600
		PerTrack6.2512	2.510.0
	Formatted	PerDisk (Sector /Track)	655.4 (16)	1310.7 (32)	1065.0 (26)
			737.3 (9)	1474.6 (18)	1228.8 (15)
			819.2 (5)	1638.4 (10)	1310.7 (8)
RecordingDensity (BPI)-Inner Most Track, side 1			8,717	17,434	14,528
Data Transfer Rate (KBits / sec)-MFM recording			250	500
Number of Heads			2
Number of Tracks			160
Track Density (TPI)			135TPI (5.33 Tracks / mm)
DriveMotor Specification	Rotational Speed		300 RPM		360 RPM
	LSV		± 1.5 % Max.
	ISV		± 1.5 % Max.
	Start Time		500 ms Max.
AccessTime	Track to Track Time		3 ms
	Head Settling Time		15 ms Max.
Head 0 / Head 1 Offset			Head 1 is displaced 8 tracks toward the drive spindle direction.

FLOPPY DISK DRIVE SPECIFICATION	PAGE5
	MODEL	SFD-321B

ITEM		LOW DENSITY STANDARD 1MB	HIGH DENSITY STANDARD 2MB	HIGH DENSITY *OPTION* 1.6MB
MediaOperating Force	Inserting800gr	Max.
	Ejecting 1300gr	Max.
MediaEjectingDistance		10~70mm
Acoustic Noise at 50 cm- at 3 ms Step Rate		50dBAMax.
Read BitShift		1300nsMax.	650nsMax.
1.MeasuredwithBrikon723Bon Track79 with0nsprecompensation onboth heads.
Asymmetry		600nsMax.	300nsMax.
1.MeasuredwithBrikon723Bon Track00 with0nsprecompensation onboth heads.
Radial Alignment	Both R/W heads must be radially aligned to all tracks within ±0.0200mm when accessed from either direction. Measurementistobemade at normal voltage and normal environmental condition (23±2 °C and 50±5 %RH)
AzimuthAlignment	±0° 18' Max.
IndextoDataBurst	0~1300 μs Measurementistobemade from the leading edge of index pulse to the beginning of data burst on Track40.
OverwriteModulation	-26dBorlessatTrack00

*Read/WriteCompensation:125nsisrecommended

FLOPPY DISK DRIVE SPECIFICATION	PAGE6
	MODEL	SFD-321B

2.2 Environmental Conditions

ITEM SPECIFICATION
Ambient Temperature	Operating(°C)			0 ~ 50
	Storage(°C)-40			~ 70
	Transportation(°C)-40			~ 70
	TemperatureGradient (°C / Hr)		Operating	20 Max.
			Non-operating	30 Max.
Relative Humidity(%)*No-condensation	Operating:29 °C Max. wet bulb temp.			20 ~ 80
	Storage : 40 °C Max.wet bulbtemp.			0 ~ 90
	Transportation: 45 °C Max.wet bulbtemp.			0 ~ 90
Vibration (30min.sweep cycle)*Exclude resonant frequency	Operating	5 ~ 100 Hz frequency range		1.5 G Max.
		100~ 200 Hz frequency range		1.0 G Max.
		200~ 600 Hz frequency range		0.5 G Max.
	Transportation: 5 ~600 Hz frequency range			3 G Max.
Shock (11 ms half sine wave)	Operating			5 G Max.
	Transportation			100 GMax.
FLOPPY DISK DRIVE SPECIFICATION	PAGE7
	MODEL	SFD-321B

2.3 Reliability

ITEM		SPECIFICATION
M.T.B.F.(Meantimebetweenfailures)		20000poweronhours(POH)(25%duty)
M.T.T.R.(Mean time to repair)		30 minutes Max.
Component Life		5 years
DiskLife		3 × 10^6 passespertrackormore
DiskInsertion		3 × 10^4 timesormore
ErrorRate	SoftReadError(*1)	1 per 10^9 bitsread
	HardReadError(*2)	1 per 10^12 bitsread
	SeekError(*3)	1 per 10^6 seeks

(*1) A soft (recoverable) error is defined as a successful attempt to read a track of data within 3 retries after areadfailure. A read retry is defined as an attempt to read the entire track that a read failure occurred on.
(*2)Ahard(non-recoverable)errorisdefinedasafailuretoreadatrackof datawithin3retriesafterareadfailure.
(*3) A seek (access) error is defined as the inability of the drive to seek to atargetedtrackwithin1retry.Anaccessretryisdefinedasonerecalibration withanattempttoseektothetargetedtrack.

FLOPPY DISK DRIVE SPECIFICATION	PAGE8
	MODEL	SFD-321B

2.4 Power Supply

ITEM SPECIFICATION
RequiredPowerD.C.5V		± 10 %
Allowable Ripple Voltage		100 mVp-p (includingspikenoise)
Power Consumption	OperatingMode	AverageCurrent	AveragePower
		Typ.	Typ.
	Stand - by	2 mA	10mW
	Read Operation	0.3 A	1.5 W
	WriteOperation	0.3A	1.5W
	SeekOperation(3ms)	0.7A	3.5W
	DriveMotorStart	0.7A	3.5W

+5 V(*1)

Current(A)

(*1) Typical values are specified at 5.0V
(*2) Stand-by: Under the condition that all input lines are inactive.

FLOPPY DISK DRIVE SPECIFICATION	PAGE9
	MODEL	SFD-321B

2.5 Physical Specifications

ITEM SPECIFICATION
Mechanical Dimension	Width(mm)101.6
	Height(mm)25.4
	Depth(mm)145.0(withoutFrontBezel)
Weight(gr)460.0typ.
External View		Refer to Fig. 2-1 and Fig. 2-2
Installation Holes		Refer to Fig. 2-1 and Fig. 2-2

HEIGHT	25.4 MM
WIDTH	1016 MM
DEPTH	145.0 MM

Technical line drawing of a mechanical component with no visible text or symbols

BAR CODE SCL-SPB MMA CE 17mm LKN 200 15mm LKN 1000

G-H0×05 TAPPED HOLE -20mm x Max 50mm TORALE MAX SHUL 5 mm 30 mm 70 mm 20 mm 5 mm

70mm 50mm 30mm

50 40 26.0 78.5

Figure 2-1 Physical Dimensions

PHYSICAL DIMENSIONS

W/O Bezei type)

HEIGHT	25.4 mm
WIDTH	101.6 mm
DEPTH	143.0 mm

Architectural floor plan showing room layout and ceiling fixtures (no text or labels)

75.40 96.40

OCCR 1.4 3.6 25.0 mm LED 25.0 mm 25.0 mm ELECT BUTTON

Figure 2-2 Physics Dimensions

3. INSTALLATION

Installation Direction

Pure electrical circuit lines without any symbols

Vertical

Pure electrical circuit lines without any symbols

Pure architectural floor plan lines without any text, numbers, or symbols

Horizontal

Technical line drawing of a mechanical component with angular dimension标注 (no text or symbols)

* The other installation directions than the aboves will be considered separately.

Figure 3-1 Installation

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION	PAGE13
	MODEL	SFD-321B

4. ELECTRICAL INTERFACE

4.1 Signal Interface

graph LR
    A["HOST CONTROLLER SYSTEM"] --> B["DensitySelect"]
    A --> C["InUse(Spare)"]
    A --> D["DriveSelect3(Spare)"]
    A --> E["Index"]
    A --> F["DriveSelect0"]
    A --> G["DriveSelect1"]
    A --> H["DriveSelect2(Spare)"]
    A --> I["MotorOn"]
    A --> J["DirectionSelect"]
    A --> K["Step"]
    A --> L["WriteData"]
    A --> M["WriteGate"]
    A --> N["Track00"]
    A --> O["WriteProtect"]
    A --> P["ReadData"]
    A --> Q["SideSelect"]
    A --> R["Ready/DiskChange"]
    B --> S["FDD SFD-321B(*1)"]
    C --> S
    D --> S
    E --> S
    F --> S
    G --> S
    H --> S
    I --> S
    J --> S
    K --> S
    L --> S
    M --> S
    N --> S
    O --> S
    P --> S
    Q --> S
    R --> S

(*1)Alloddnumbers:GND

4.2 Power Interface

graph LR
    A["HOST CONTROLLER POWER SUPPLY"] -->|+5 V| B["FDD SFD-321B"]
    A <-->|+5VReturn(GND)| B
    A <-->|No Connection(GND)| B
    A <-->|No Connection| B
    B -->|1| A
    B -->|2| A
    B -->|3| A
    B -->|4| A

FLOPPY DISK DRIVE SPECIFICATION

PAGE14

MODEL

SFD-321B

4.3 Interface Connectors

4.3.1 Signal Interface Connector

Side	Connector
FDD	HIROSE P/N 5003-001-7347 or equivalent (*1)
HOST(Connector)	3MNO.7934orequivalent
HOST(Cable)	3M3365/34orequivalent(*2)

(*1)33pins,2.54pitch(Pin#3,5,7,9,13,15,17,19,23,25,27,31:cutoff)

WallType

(*2) Cable length: 1m (3.3 feet) Max.

2 4 ~ 34 PCB 1 3 ~ 33 PINNO.3,5,7,9,13,15,17,19,23,25,27,31 :Cutoff RearView

FRONT TopView

Simple line drawing of a printer with a paper roll and cable (no text or symbols)

Fig 4-1. Signal Interface Connector and Cable Side Connector

FLOPPY DISK DRIVE SPECIFICATION	PAGE15
	MODEL	SFD-321B

4.3.2 Power Interface Connector

Side Connector
FDDELCOP/N	9251-004-000-809orequivalent
HOST(Connector)AMP	171822-4orequivalent
HOST(Cable)	AWG #20-26

PCB 4 3 2 1 Rear View

14.6 m/s 7.8 m/s Top View

10.7 6.0 11.0 12.3 A

Fig 4-2. Power Interface Connector and Cable Side Connector

FLOPPY DISK DRIVE SPECIFICATION

PAGE16

MODEL

SFD-321B

5. SIGNAL CHARACTERISTICS

5.1 Signal Level

Signal Logic Input Level Output Level (*1)
Low (True)	0.9 V Max.	0.4 V Max.
High(False)2.2	VMin. 2.4	VMin.

(*1)"LOW"levelMax.sinkcurrentis48mA.

5.2 Recommended Interface Circuit

HOST SIDE FDD SIDE 7438SERIES CMOSOR EQUIVALENT (1 kΩ) Vdd CMOS (SCHMITTTRIGGERINPUT) INPUT Vdd 150 Ω~2.2 kΩ (1 kΩ isrecommended) OUTPUT 74LS14 74HC14OR EQUIVALENT OPENDRAIN FRAMEGND

FLOPPY DISK DRIVE SPECIFICATION

PAGE17

MODEL

SFD-321B

5.3 Input Signals

5.3.1 Density Select

Thisiganlisusedtodistinguishbetween1.6MBand2MBMode. TheinterfacepinNo.2canbeusedasDensitySelectInputsignalby attaching0 Ω resistoronto"OPA"shortplugwhentheHighdensitymedia isinserted. The"HIGH"leveldesignates2MBModeandthe"LOW"level designates1.6MBMode.FDDcantellwhethertheinsertedmediaishigh or Low density by checking the signal coming from mechanical switch which detects the densityselectingholeonthemedia.

Type	Contents
2 Mode(2.0/1.0MB)(Non-connectionof"OPA")	AutomaticSwitching2.0MB:IfHighdensitymediaisinserted.1.0MB:IfLow densitymediaisinserted.
3 Mode(2.0/1.6/1.0MB)(Connectionof"OPA")	AutomaticSwitchingwith"DensitySelect"2.0MB:IfHighdensitymediaisinserted with "DensitySelect"is"HIGH".1.6MB:IfHighdensitymediaisinserted with "Density Select" is "LOW".1.0MB:IfLow densitymediaisinserted "DensitySelect"isnotavailable.

5.3.2 Drive Select 0 and 1

Twotraceplugs onthePCB,DS0andDS1areprovidedtoselectwhich Drive Select line will activate the interface signals for a unique drive in the daisy chain connection up to two drive units. Drive Select, when activated logical"LOW",enablesalltheI/OlinesexceptMotorOnline. This signal also controls the lightening of In-Use LED.

FLOPPY DISK DRIVE SPECIFICATION	PAGE18
	MODEL	SFD-321B

5.3.3 Motor On

Logical"LOW"levelofthissignalmakes the spindle motorbe turned on. Themotorreaches to therated rotational speed within 500 ms after this signalchangesto"LOW". This input signal is ignored when nodisk is installed.

5.3.4 Direction Select

This signals specifies the moving direction of the R/Whead when the Step input is activated. Logical "LOW" level: the direction to the inner track of a disk. "HIGH" level: the direction to the outer track of a disk.

5.3.5 Step

This is a control sign altomov the R/Whead, and the head starts moving at the rising edge of the Step signal.

3 ms Min. 0.15 µs Min.

5.3.6 Write Data(MFM)

Each time this signal changes from "HIGH" level to "LOW" level, the direction of the current flowing into the R/W head is reversed, and the databitis written on the disk.

Density Mode		Ta ( s )(Typ.)	Tb ( s )(Typ.)	Tc ( s )(Typ.)
Density	Transfer Rate
1.0MB	250 kbps	4	6	8
1.6MB	500 kbps	2	3	4
2.0MB	500 kbps	2	3	4

FLOPPY DISK DRIVE SPECIFICATION

PAGE19

MODEL

SFD-321B

5.3.7 Write Gate

"LOW"levelofthissignalenablesthewritedatatobewrittenonthedisk provided thatthedriveisselected,diskusedisnotwriteprotectedand seekoperationiscompleted.

When this signal changesto "HIGH" level, thereador seek operation becomes possible.

5.3.8 Side Select

This signalselectsthesideofHeads.

Logical"HIGH"level:thelowerside(side0)ofHeads

"LOW"level: theupperside(side1) of Heads

WRITEGATE SIDE SELECT 100 µs Min. 650 µs Min. 100 µs Min. 100 µs Min. READDATA validvalid valid valid 650 µs Min

5.4 Output Signals

5.4.1 Index

Thisisapulsesignaloutputtoindicatethestartofthetrack, andit outputsateveryrevolutionofthedisk.

This output signal is activated when only the drive is in Readystate.

1~8 ms 200 ± 3 ms (166.7 ± 2.5ms)(*1)

(*1) The value in parenthesis is for 360 rpm (1.6MB Mode) rotation speed.

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MODEL

SFD-321B

5.4.2 Track 00

"LOW" level of this signal indicates the head is on Track 00 position and stepping motoris at the specified position respectively.

5.4.3 Write Protect

When a write-protected disk is inserted, this signal becomes "LOW" and the data on the disk is protected from mis-erasing and the write operation is inhibited.

5.4.4 Read Data (MFM)

ReadDatareadoutfromthediskistransferredtothehostsystem inthesameformasitwasreceivedontheWriteDataline.Eachflux reversalsensedonthediskproducetheonlytransitionfrom"HIGH" level to "LOW" level. For the seperation of the clock bits from the data, the leading edge of a change from "HIGH" to "LOW" level is used.

Ta±0.5 % Tb±0.5% Tc±0.5% 400ns ±20 %

Density Mode		Ta (μs) (Typ.)	Tb (μs) (Typ.)	Tc (μs) (Typ.)
Density	Transfer Rate
1.0MB	250 kbps	4	6	8
1.6MB	500 kbps	2	3	4
2.0MB	500 kbps	2	3	4

FLOPPY DISK DRIVE SPECIFICATION	PAGE21
	MODEL	SFD-321B

5.4.5 Disk Change / Ready

By selecting proper trace plugs, this signal line (pin #34) can be used for ReadyorDiskChangeline.

-.Ready

This line becomes active "LOW" when the drive is selected, a disk is clamped and the spindle motor is up to speed.

(aftercountingatleasttwoIndexpulses)

Otherwisethislinegoeslogical"HIGH"level.

-.DiskChange

This line is active "LOW" unless disk is clamped and a Steppulse is received when the drive is selected.

FLOPPY DISK DRIVE SPECIFICATION	PAGE22
	MODEL	SFD-321B

6. TIMING DIAGRAM

6.1 Seek Operation Timing

DRIVESELECT DIRECTION SELECT 500 ns Min. REVERSE 1 µs Min. 1 µs FORWARD 1 µs Min. STEP 3 ms Min. 2.8 ms Max. 10 µs Max. 1 µs Min. TRACK00

6.2 Read / Write Operation Timing

(*1) Turn Around Time is 18ms Min. when Direction is changed.
(*2)750 μs Min.(including100 μs SideSelecttiming)
(*3) Whenspindle motorspeed is changed (300rpm 360rpm) this value is 500 ms Min.

FLOPPY DISK DRIVE SPECIFICATION	PAGE23
	MODEL	SFD-321B
7. SAFETY STANDARDSThisdriveisapprovedbythefollowings;CECSAULTUVMIC.BSMI.FCC

FLOPPY DISK DRIVE SPECIFICATION

PAGE24

MODEL

SFD-321B

8. PACKAGING DESCRIPTION

8.1 Label Description

8.1.1 Serial Number Label Marking

FBT6 BAR CODES1ARB00001		F	B	T	6	S	1	A	L	B	0	0
		1	2	3	4		5	6	7	8	9

① Productname : "F" → FDD
② Model name : "B" → SFD-321B
③ Revisionname(Major)
④ Revisionname(Minor)
⑤ Production division : "S" → SEMAELECTRONICSCO.,LTD
⑥ Productionsite

Marking	1	2
Productionsite	Chinafactory (SEMAChina)	Outsidesupplier (OEM)

⑦ Production line: "A" → A-Line, "B"\~"Z"
⑧ Year of manufacturing

Year	2001	2002	2003	2004	2005	2006	2007
Marking	M	N	P	Q	R	S	T

⑨ Month of manufacturing

Month	Marking	Month	Marking	Month	Marking	Month	Marking
1	1	4	4	7	7	10	A
2	2	5	5	8	8	11	B
3	3	6	6	9	9	12	C

⑩ Consecutive number

8.1.2 Label Description

Barcode FBT6 S1R1100001 ① REV. T6② SFD-321B/ ****③ DC5V 0.7V MADE IN CHINA ④ SAMSUNG ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪

① Serial number
② Revision
③ Buyername
④ Productionsite
⑤ CEmarking

⑥ CSAmarking
⑦ UL marking
⑧ TUVmarking
⑨ MICmarking(foronlydomestic)
⑩ BSMImarking
⑪ Labelmanufactureridentification

Packaging Method

PROFESSION
METHOD	1	2	3	4
PROCESSORS
				NOTE)1 Q'TY --> per 1 BOX2 SIZE --> Inside dimension
METHOD	5	6

(130=5.1") (1050=41.3") (1100=43.3") (1100=43.3")

Q'TY	1440pcs/pallet (12 carton/5layer)
WEIGHT	653 kg/pallet (APPROX)
PALLET SIZE	(1100) × (1100) × (130)
1 PALLET SIZE	(1100) × (1100) × (1050)
TOTAL Q'TY	20ft CONTAINER(2330×5885×2240)	28,800 pcs
	40ft CONTAINER(2330×11930×2240)	57,600 pcs

FLOPPY DISK DRIVE SPECIFICATION	PAGE27
	MODEL	SFD-321B

9. OPTION SELECTION

FDD can be modified for different functions than the standards specification. These modifications should be implemented by the factory according to the request of the customers.

9.1 Trace Options

By putting a chip-resistor onto a proper trace, FDD can be used for the following different functions.

Trace Name Description
DS0	ActivateDriveSelect0line
DS1	ActivateDriveSelect1line
DC	ActivateDiskChangeSignal
RDY	ActivateReadySignal
OPA	For3Modeusage
OPB(*1)	For1.6MBusage

(*1) Both "OPA" and "OPB" open : 2 Mode (1MB / 2MB)
"OPB" is connected and "OPA" is open : 2 Mode (1MB / 1.6MB)
"OPA" is connected and "OPB" is open : 3 Mode (1MB / 1.6MB / 2MB)

FLOPPY DISK DRIVE SPECIFICATION	PAGE28
	MODEL	SFD-321B

9.2 Other Options (Buyer Selection)

The color of In-Use LED, Front-Panel, the value of the termination resistors and the shape of button can be modified by customers' request.

9.2.1 Mode

☐	2 Mode (1 MB / 2 MB)
☐	3Mode(1MB/1.6MB/2MB)

9.2.2 The Selection of Bezel Type

□	WithBezel
□	WithoutBezel

9.2.3 The Color of Bezel, Button

□	Black
□	Ivory
□	Gray
Color Number		____ (Fill in this blank)

9.2.4 The Selection of LED Color

□	Green
□	Red
□	Amber

FLOPPY DISK DRIVE SPECIFICATION	PAGE29
	MODEL	SFD-321B
11. GENERAL COMMENT