Document
FDD
OEM MANUAL SFD-321B
3.5inch DUAL DENSITY MICRO FLOPPY DISK DRIVE
SPECIFICATIONS
SEMA ELECTRONICS CO.,LTD XiaLingBei HengKeng Management Area
Liaobu Town Dongguan City Guangdong Province, China
SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE MODEL
1 SFD-321B
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
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 Signals 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
PAGE MODEL
2 SFD-321B
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
※ LIST of FIGURES
Figure 2-1. Figure 2-2. Figure 3-1. Figure 4-1. Figure 4-2. Figure 4-3. Figure 8-1. Figure 8-2.
Physical Dimensions (With Bezel Type) Physical Dimensions (Without Bezel Type) Installation Signal Interface Connector and Cable Side Connector Power Interface Connector and Cable Side Connector Rear View of FDD Packaging Method Pallet Dimension & Method
SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE MODEL
3 SFD-321B
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 and SAMSUNG, shall be used.
SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE MODEL
4 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
Per Disk Per Track
Formatted
Per Disk (Sector / Track)
1000 6.25 655.4 (16) 737.3 (9) 819.2 (5)
2000 12.5 1310.7 (32) 1474.6 (18) 1638.4 (10)
1600 10.0 1065.0 (26) 1228.8 (15) 1310.7 (8)
Recording Density (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)
Rotational Speed
300 RPM
360 RPM
Drive Motor Specification
LSV ISV
± 1.5 % Max. ± 1.5 % Max.
Start Time
500 ms Max.
Access Time
Track to Track Time
Head Settling Time
3 ms 15 ms Max.
Head 0 / Head 1 Offset
Head 1 is displaced 8 tracks toward the drive spindle direction.
SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE MODEL
5 SFD-321B
ITEM
Media Operating Force
Inserting Ejecting
Media Ejecting Distance
Aco.