Samsung SFD-321B User Manual

OEM MANUAL

SFD-321B

3.5inch DUAL DENSITY

FDD

MICRO FLOPPY DISK DRIVE

SPECIFICATIONS

SEMA ELECTRONICS CO.,LTD

XiaLingBei HengKeng Management Area

Liaobu Town Dongguan City

Guan

dongProvince,China

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

CONTENTS

1. INTRODUCTION

1.1 Application

1.2 Disk Used

2. GENERAL SPECIFICATIONS

2.1 Performance

2.2 Environmental Conditions

2.3 Reliability

2.4 Power Supply

2.5 Physical Specifications

PAGE 1

MODEL

SFD-321B

3. INSTALLATION

4. ELECTRICAL INTERFACE

4.1 Signal Interface

4.2 Power Interface

4.3 Interface Connectors

5. SIGNAL CHARACTERISTICS

5.1 Signal Level

5.2 Recommended Interface Circuit

5.3 Input Sig n als

5.4 Output Signals

6. TIMING DIAGRAM

6.1 Seek Operation Timing

6.2 Read / Write Operation Timing

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

7. SAFETY STANDARDS

8. PACKAGING DESCRIPTION

8.1 Label Description

8.2 Packaging Method

8.3 Pallet Dimension and the Method

9. OPTION SELECTION

9.1 Trace Options

9.2 Other Options (Buyer Selection)

10. GENERAL COMMENT

PAGE 2

MODEL

SFD-321B

※

LIST of FIGURES

Figure 2-1. Physical Dimensions (With Bezel Type)

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

Figure 3-1. Installation

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

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

Figure 4-3. Rear View of FDD

Figure 8-1. Packaging Method

Figure 8-2. Pallet Dimension & Method

SEMA ELECTRONICS CO.,LTD

PAGE 3

FLOPPY DISK DRIVE SPECIFICATION

MODEL

1. INTRODUCTION

1.1 Application

This manual shall be applied for SAMSUNG SFD-321B - double side, dual

density (option : 3 mode), 3.5 inch micro floppy disk drive

(hereinafter referred to as "FDD").

1.2 Disk Used

3.5 inch micro floppy disks (hereinafter referred to as "DISK"),

the use of which will be mutually agreed between the customers an d

SAMSUNG, shall be used.

SFD-321B

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

2. GENERAL SPECIFICATIONS

2.1 Performance

PAGE 4

MODEL

SFD-321B

LOW

ITEM

Per Disk 1000 2000 1600

Unformatted

Per Track 6.25 12.5 10.0

Capacity

(KBytes)

Formatted

Recording Density (BPI)

-Inner Most Track, side 1

Data Transfer Rate (KBits / sec)

Number of Heads 2

Number of Tr acks 160

Track Density (T PI) 135TPI (5.33 Tracks / m m)

Per Disk

(Sector / Track)

-MFM recording

DENSITY

STANDARD

1MB

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)

8,717 17,434 14,528

250 500

HIGH

DENSITY

STANDARD

2MB

DENSITY

*OPT ION*

HIGH

1.6M B

Drive Motor Specification

Access Time

Head 0 / Head 1 Offset

Rotational Speed 300 RPM 360 RPM

LSV

ISV

Start Time 500 m s Max.

Track to Track Time

Head Settling Time 15 ms Max.

Head 1 is displaced 8 tracks toward the drive spindle direction.

1.5 % Max.

3ms

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

PAGE 5

MODEL

SFD-321B

ITEM

Media Operating Force

LOW

DENSITY

STANDARD

1MB

Inserting 800 gr Max.

Ejecting 1300 gr Max.

HIGH

DENSITY

STANDARD

2MB

DENSITY

*OPT ION*

1.6M B

Media Ejec ting Distance 10 ~ 70 mm

AcousticNoiseat50cm

-at3msStepRate

50 dBA Max.

Read Bit Shift 1300 ns Max. 650 ns Max.

1. Measured with Brikon 723B on Track 79 with 0 ns precompensation on both heads.

Asymmetry 600 ns Max. 300 ns Ma x.

1. Measured with Brikon 723B on Track 00 with 0 ns precompensation on both heads.

HIGH

Both R/W heads must be radially aligned to all tracks within±0.0200 mm when accessed from either

Radial Alignment

direction. Measurement is to be made at normal voltage and normal environmental condition

℃

and 50±5 % RH)

Max.

Azimuth Alignment

(23±2

±0°18′

0 ~ 13 00μs

Index to Data Burst

Measurement is to be made from the leading edge of index pulse to the beginning of data burst on Track 40.

Overwrite Modulation -26 dB o r less a t Tra ck 00

* Read/Write Compensation : 125ns is recommended

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

2.2 Environmental Conditions

ITEM SPECIFICATION

PAGE 6

MODEL

SFD-321B

Ambient

Temperature

Relative

Hum idity (%)

*No-condensation

Vibration (30 min. swe ep

cycle)

*Exclude

resonant frequency

Operating (℃) 0

Storage (℃) -40

Transportation (℃) -40

Temperature Gradient

℃

(

/Hr)

Operating : 29

Storage : 40

Transportation : 45

Operating

Transportation : 5 ~ 600 Hz

℃

Max. wet bulb temp. 20

℃

Max. wet bulb temp. 0

℃

5~100Hzfrequencyrange 1.5 G Max.

100~ 200 Hz frequency range 1.0 G Max.

200~ 600 Hz frequency range 0.5 G Max.

frequency range

Operating 20 Max.

Non-operating 30 Max.

Max.

wet bulb temp.

3GMax.

∼

Shock (11 ms half sine wave)

Operating 5GMax.

Transportation 100 G Max.

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

2.3 Reliability

ITEM SPECIFICATION

PAGE 7

MODEL

SFD-321B

M.T.B.F.(Mean time between failures)

M.T.T.R.(Meantimetorepair) 30 minutes Max.

Com ponent Life 5years

Disk Life 3×106passes per track or more

Disk Insertion 3×104times or more

Soft Read Error (*1)

Error Rate

<Note>

Hard Read Error (*2)

Seek Error (*3)

20000 power on hours (POH) (25% duty)

1per109bits read

1per1012bits read

1per106seeks

(*1) A soft (recoverable) e rror is defined as a successful a ttempt to read a track

of data within 3 retries after a read failure.

A read retry is defined as an attempt to read the entire track that a read

failure occurred on.

(*2) A hard (non-recoverable) error is defined as a failure to read a track of

data within 3 retries after a read failure.

(*3) A seek (access) error is defined as the inability o f the drive to seek to

a targeted track within 1 retry. An access retry is defined as one recalibration

with an attempt to seek to the targeted track.

SEMA ELECTRONICS CO.,LTD

FLOPPY DISK DRIVE SPECIFICATION

2.4 Power Supply

ITEM SPECIFICATION

PAGE 8

MODEL

SFD-321B

Required Power D.C. 5 V

AllowableRippleVoltage 100 mV

Average Current Average Power

Operating Mode

Typ. Typ.

Stand - by 2mA 10mW

Power

Consumption

Rea d Ope ration 0.3 A 1.5 W

Write Operation 0.3 A 1.5 W

Seek Operation (3 ms) 0.7 A 3.5 W

Drive Motor Start 0.7 A 3.5 W

+5 V (*1)

Current (A)

0.3 A

10 %

(including spike noise)

p-p

0.7 A Typ.0.7 A Typ.

18 ms Max.

Seek

2mA

Stand-by

(*2)

500 m s Max.

Spindle motor ON Read /

Write

<Note>

(*1) Typical values are specified at 5.0 V

(*2) Stand-by : Under the condition that all input lines are inactive.

SEMA ELECTRONICS CO.,LTD

PAGE 9

FLOPPY DISK DRIVE SPECIFICATION

MODEL

2.5 Physical Specifications

ITEM SPECIFICATION

Width (mm) 101.6

Mechanical Dimen sion

Weight (gr) 460.0 typ.

External View Refer to Fig. 2-1 and Fig. 2-2

Installation Holes Refe r to Fig. 2-1 and Fig. 2-2

Height (mm) 25.4

Dep th (mm ) 145.0 (without Front Bezel)

SFD-321B

SEMA ELECTRONICS CO.,LTD

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