SanDisk SD25B-100 User manual

FlashDrive

Product Manual

(1.8", 2.5" and 3.5" Form Factors)

SanDisk Corporation

140 Caspian Court

Sunnyvale, CA 94089

TEL: 408-542-0500 FAX: 408-542-0503

URL: http://www.sandisk.com

SanDisk

®

Corporation general policy does not recommend the use of its products in life support applications where in a

failure or malfunction of the product may directly threaten life or injury. Per SanDisk Terms and Conditions of Sale, the user

of SanDisk products in life support applications assumes all risk of such use and indemnifies SanDisk against all damages.

SanDisk FlashDrives are UL (Underwriters Laboratories) approved. They are for use only with UL approved computers or

systems. See this manual for FlashDrive installation instructions.

The information in this manual is subject to change without notice.

SanDisk Corporation shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or

consequential damages resulting from the furnishing, performance, or use of this material.

All parts of the SanDisk product documentation are protected by copyright law and all rights are reserved. This

documentation may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic

medium or machine readable form without prior consent, in writing, from SanDisk Corporation.

SanDisk and the SanDisk logo are registered trademarks of SanDisk Corporation.

Product names mentioned herein are for identification purposes only and may be trademarks and/or registered trademarks of

their respective companies.

The SanDisk products are covered or licensed under one or more of the following U.S. Patent Nos. 5,070,032; 5,095,344;

5,168,465; 5,172,338; 5,198,380; 5,200,959; 5,268,318; 5,268,870; 5,272,669; 5,418,752; 5,602,987. Other U.S.

and foreign patents awarded and pending.

Lit. No. 80-36-00096 Rev. 1 1/99 Printed in U.S.A.

Revision History

• Preliminary versions—initial release.

• Revision 1 1/99—includes changes to pages 17 and 19.

FlashDrive Product Manual

Table of Contents

1.0 Introduction..............................................................................................7

1.1 Scope.................................................................................................................................8

1.2 FlashDrive Product Models................................................................................................8

1.3 System Features.................................................................................................................9

1.4 Related Documentation......................................................................................................9

1.5 Functional Description.......................................................................................................9

1.5.1 Flash Technology Independence...............................................................................9

1.5.2 Defect and Error Management..................................................................................9

1.5.3 Endurance..............................................................................................................10

1.5.4 Wear Leveling......................................................................................................10

1.5.5 Automatic Sleep Mode...........................................................................................10

1.5.6 Power Supply Requirements...................................................................................10

2.0 FlashDrive Product Specifications..................................................................11

2.1 FlashDrive System Environmental Specifications.............................................................11

2.2 System Power Requirements .............................................................................................12

2.3 System Performance.........................................................................................................12

2.4 System Reliability and Maintenance ...............................................................................13

2.5 Physical Specifications....................................................................................................13

2.6 Capacity Specifications ..................................................................................................14

3.0 Installation and Mounting............................................................................20

3.1 Preparing to Install the FlashDrive.................................................................................20

3.2 Installing the FlashDrive in a Two Drive Configuration...................................................20

3.2.1 Jumper Settings for 1.8- and 2.5-inch FlashDrives...................................................20

3.2.2 Jumper Settings for 3.5-inch FlashDrives................................................................21

3.3 Mounting the FlashDrive.................................................................................................21

4.0 FlashDrive AT Interface Description................................................................23

4.1 Physical Description........................................................................................................23

4.1.1 Pin Assignments and Pin Type................................................................................24

4.2 Electrical Description......................................................................................................25

4.3 Electrical Specification....................................................................................................27

4.3.1 Absolute Maximum Conditions...............................................................................27

4.3.2 Input Leakage Current...........................................................................................27

4.3.3 Input Characteristics.............................................................................................27

4.3.4 Output Drive Type................................................................................................28

4.3.5 Output Drive Characteristics................................................................................28

4.3.6 Interface/Bus Timing.............................................................................................29

4.3.7 I/O Input (Read) Timing Specification...................................................................29

4.3.8 I/O Output (Write) Timing Specification...............................................................30

5.0 ATA Drive Register Set Definition and Protocol..................................................31

5.1 I/O Primary and Secondary Address Configurations..........................................................31

5.2 ATA Registers..................................................................................................................31

5.2.1 Data Register........................................................................................................31

5.2.2 Error Register........................................................................................................32

FlashDrive Product Manual

Table of Contents (continued)

5.2.3 Feature Register....................................................................................................32

5.2.4 Sector Count Register.............................................................................................32

5.2.5 Sector Number (LBA 7-0) Register..........................................................................32

5.2.6 Cylinder Low (LBA 15-8) Register..........................................................................32

5.2.7 Cylinder High (LBA 23-16) Register......................................................................32

5.2.8 Drive/Head (LBA 27-24) Register.........................................................................33

5.2.9 Status & Alternate Status Registers.......................................................................34

5.2.10 Device Control Register.......................................................................................34

5.2.11 Drive Address Register........................................................................................35

6.0 ATA Command Description .........................................................................36

6.1 ATA Command Set...........................................................................................................36

6.1.1 Check Power Mode - 98H or E5H...........................................................................38

6.1.2 Execute Drive Diagnostic - 90H..............................................................................38

6.1.3 Erase Sector(s) - C0H.............................................................................................39

6.1.4 Format Track - 50H................................................................................................40

6.1.5 Identify Drive - ECH.............................................................................................40

6.1.5.1 General Configuration..........................................................................42

6.1.5.2 Default Number of Cylinders................................................................42

6.1.5.3 Default Number of Heads.....................................................................42

6.1.5.4 Number of Unformatted Bytes per Track................................................42

6.1.5.5 Number of Unformatted Bytes per Sector...............................................42

6.1.5.6 Default Number of Sectors per Track.....................................................42

6.1.5.7 Number of Sectors per Drive..................................................................42

6.1.5.8 FlashDrive Serial Number...................................................................42

6.1.5.9 Buffer Type..........................................................................................42

6.1.5.10 Buffer Size...........................................................................................42

6.1.5.11 ECC Count............................................................................................42

6.1.5.12 Firmware Revision...............................................................................42

6.1.5.13 Model Number......................................................................................42

6.1.5.14 Read/Write Multiple Sector Count .......................................................42

6.1.5.15 Double Word Support...........................................................................43

6.1.5.16 Capabilities........................................................................................43

6.1.5.17 PIO Data Transfer Cycle Timing Mode..................................................43

6.1.5.18 DMA Data Transfer Cycle Timing Mode................................................43

6.1.5.19 Translation Parameters Valid ..............................................................43

6.1.5.20 Current Number of Cylinders, Heads, Sectors/Track ..............................43

6.1.5.21 Current Capacity .................................................................................43

6.1.5.22 Multiple Sector Setting ........................................................................43

6.1.5.23 Total Sectors Addressable in LBA Mode ................................................43

6.1.6 Idle - 97H or E3H...................................................................................................44

6.1.7 Idle Immediate - 95H or E1H.................................................................................44

6.1.8 Initialize Drive Parameters - 91H.........................................................................45

6.1.9 Read Buffer - E4H.................................................................................................45

6.1.10 Read Multiple - C4H ...........................................................................................46

6.1.11 Read Long Sector - 22H or 23H .............................................................................47

6.1.12 Read Sector(s) - 20H or 21H..................................................................................47

6.1.13 Read Verify Sector(s) - 40H or 41H.......................................................................48

6.1.14 Recalibrate - 1XH................................................................................................48

FlashDrive Product Manual

Table of Contents (continued)

6.1.15 Request Sense - 03H .............................................................................................49

6.1.16 Seek - 7XH..........................................................................................................50

6.1.17 Set Features - EFH...............................................................................................50

6.1.18 Set Multiple Mode - C6H .....................................................................................52

6.1.19 Set Sleep Mode- 99H or E6H ................................................................................52

6.1.20 Standby - 96H or E2H ..........................................................................................53

6.1.21 Standby Immediate - 94H or E0H .........................................................................53

6.1.22 Translate Sector - 87H .........................................................................................54

6.1.23 Wear Level - F5H ...............................................................................................55

6.1.24 Write Buffer - E8H..............................................................................................55

6.1.25 Write Long Sector - 32H or 33H ............................................................................56

6.1.26 Write Multiple Command - C5H ..........................................................................56

6.1.27 Write Multiple without Erase - CDH ..................................................................57

6.1.28 Write Sector(s) - 30H or 31H................................................................................58

6.1.29 Write Sector(s) without Erase - 38H ....................................................................58

6.1.30 Write Verify Sector(s) - 3CH...............................................................................59

6.2 Error Posting....................................................................................................................60

Ordering Information and Technical Support.............................................................61

Ordering Information..............................................................................................................63

SanDisk FlashDrive......................................................................................................63

Mounting Hardware.......................................................................................................63

Technical Support Services......................................................................................................64

Direct SanDisk Technical Support..................................................................................64

SanDisk Worldwide Web Site........................................................................................64

SanDisk Sales Offices.......................................................................................65

SanDisk Worldwide Sales Offices...........................................................................................67

Limited Warranty ............................................................................................68

FlashDrive Product Manual

1.0 Introduction

Designed to replace traditional rotating disk

drives, SanDisk FlashDrives are embedded solid-

state data storage systems for mobile computing

and the industrial work place. The 1.8-inch

FlashDrives (model SDIB) are compatible with

1.8-inch form factor hard disk drives. The 2.5- and

3.5-inch FlashDrives (models SD25B and SD35B)

are compatible with 2.5- and 3.5-inch form factor

disk drives. These FlashDrives, and all SanDisk

FlashDrives, feature an extremely light weight,

low profile form factor with 4 to 440 megabytes

(MB) of storage capacity.

SanDisk FlashDrives fit into standard disk drive

bays, use the industry standard IDE interface and

connect to the host system via the same ribbon

cable used to connect standard disk drives. No

additional device drives are required.

FlashDrives consist of an IDE compatible flash

memory controller and flash memory chip(s). See

Figure 1-1 for a system block diagram of these IDE

FlashDrive products.

Figure 1-1 FlashDrive Block Diagram

FlashDrive Product Manual

1.1 Scope

This manual describes the key features and

specifications of SanDisk FlashDrives, plus the

information required by an engineer to interface

the FlashDrives to a host system.

1.2 FlashDrive Product Models

FlashDrives are available in a variety of

capacities as shown in the following table. All

FlashDrives are shipped formatted with a DOS

5.0 file structure.

Table 1-1 FlashDrive Model Numbers and Capacities

Standard

Model

Number

Industrial

Model

Number

Form Factor Formatted

Capacity

SDIB-4 SDIBI-4 1.8-inch 4.03 MB

SDIB-10 SDIBI-10 1.8-inch 10.48 MB

SDIB-20 SDIBI-20 1.8-inch 20.97 MB

SDIB-40 SDIBI-40 1.8-inch 41.94 MB

SDIB-80 SDIBI-80 1.8-inch 83.88 MB

SDIB-140 SDIBI-140 1.8-inch 140.77 MB

SDIB-220 SDIBI-220 1.8-inch 220.2 MB

SD25B-20 SD25BI-20 2.5-inch 20.0 MB

SD25B-40 SD25BI-40 2.5-inch 40.1 MB

SD25B-60 SD25BI-60 2.5-inch 60.1 MB

SD25B-80 SD25BI-80 2.5-inch 80.2 MB

SD25B-100 SD25BI-100 2.5-inch 100.0 MB

SD25B-220 SD25BI-220 2.5-inch 220.2 MB

SD25B-350 SD25BI-350 2.5-inch 350.6 MB

SD25B-440 SD25BI-440 2.5-inch 440.2 MB

SD35B-20 SD35BI-20 3.5-inch 20.0 MB

SD35B-40 SD35BI-40 3.5-inch 40.1 MB

SD35B-60 SD35BI-60 3.5-inch 60.1 MB

SD35B-80 SD35BI-80 3.5-inch 80.2 MB

SD35B-100 SD35BI-100 3.5-inch 100.0 MB

SD35B-220 SD35BI-220 3.5-inch 220.2 MB

SD35B-350 SD35BI-350 3.5-inch 350.6 MB

SD35B-440 SD35BI-440 3.5-inch 440.2 MB

FlashDrive Product Manual

1.3 System Features

• Up to 440 MB of solid-state storage

• Fully MS-DOS compatible

• Very low power

• Very rugged

• Very low weight

• Noiseless

• Very high performance

• Programmable power versus performance

• 3.3V or 5V interface

• Block size of 512 bytes

• Supports automatic power management as

well as ATA power down commands and

sleep mode over the interface

• Automatic error correction and retry

capabilities

• Sophisticated defect management system

1.4 Related Documentation

American National Standard X3T9.2 AT

Attachment Interface Document

This document can be ordered from

Global Engineering Documents by calling

1-800-854-7179.

1.5 Functional Description

The SanDisk FlashDrives contain a high level,

intelligent subsystem as shown in the block

diagram, Figure 1-1. This intelligent (micro-

processor) subsystem provides many capabilities.

These capabilities include:

1. Standard ATA register and command set

(same as found on most magnetic disk

drives).

2. Host independence from details of erasing

and programming flash memory.

3. Sophisticated system for managing

defects (analogous to systems found in

magnetic disk drives).

4. Sophisticated system for error recovery

including a powerful error correction code

(ECC).

1.5.1 Flash Technology Independence

The sector size of the FlashDrives is the same as

in a magnetic disk drive: 512 bytes. To write or

read a sector (or multiple sectors), the host

computer software simply issues a write or read

command. The command contains the number of

sectors to write/read and the address to

write/read. The host software then waits for the

command to complete. The host software does not

get involved in the details of how the flash

memory is erased, programmed or read. This is

extremely important as flash devices are expected

to get more and more complex in the future. The

intelligent IDE compatible interface used by the

FlashDrives will not need to change to support

new flash devices in the future and therefore the

host software will not need to change. Systems

that support the FlashDrives today will be able

to access future SanDisk IDE compatible products

built with new flash technology without having

to update or change host software.

1.5.2 Defect and Error Management

The FlashDrives contain a sophisticated defect

and error management system. This system is

analogous to the systems found in all magnetic

disk drives and in many cases offers enhancement.

For instance, disk drives do not typically perform

a read after write to confirm the data is written

correctly because of the performance penalty that

would be incurred. The FlashDrives do a read

after write under margin conditions to verify that

the data is written correctly (except in the case of

a Write without Erase command). In the rare case

that a bit is found to be defective the FlashDrives

can replace this bad bit with a spare bit. If

necessary the FlashDrives can even replace the

entire sector with a spare sector. This is

completely transparent to the host and does not

consume any user data space.

The FlashDrive specification for soft error rate is

much better than the magnetic disk drive

specification. In the extremely rare case that a

read error does occur, the FlashDrives have

innovative algorithms to recover the data. This is

similar to using retries on a disk drive but much

more sophisticated. The last line of defense is to

employ a powerful ECC to correct the data. If ECC

FlashDrive Product Manual

is used to recover data, defective bits are replaced

with spare bits to ensure they do not cause future

problems.

These defect and error management systems

coupled with the solid-state construction give the

FlashDrives unparalleled reliability.

1.5.3 Endurance

Even very heavy use of the FlashDrive in a

computer system will use only a fraction of the

total endurance over the computer’s five year

lifetime. For instance, it would take over 34 years

to wear out an area on the drive on which a file of

any size (from 512 bytes to drive capacity) was

rewritten 3 times per hour, 8 hours a day, 365 days

per year.

With typical applications (PIM software, word

processing, spreadsheets, data collection, etc.),

the 300,000 endurance limit is not of any practical

concern to the vast majority of users.

1.5.4 Wear Leveling

The FlashDrives do not require or perform a Wear

Level operation. The command is supported as a

NOP operation to maintain backward

compatibility with existing software utilities.

1.5.5 Automatic Sleep Mode

A unique feature of the SanDisk FlashDrives is

automatic entrance and exit from sleep mode.

Upon completion of a command, the FlashDrives

will enter the sleep mode to conserve power if no

further commands are received within 5 msec. The

host does not have to take any action for this to

occur. In most systems the FlashDrives are in sleep

mode except when the host is accessing it; thus,

conserving power. Note that the delay from

command completion to entering sleep mode can be

adjusted.

When the host is ready to access the drive and it

is in sleep mode, any command issued to the drive

will cause it to exit sleep and respond. The host

does not have to follow the ATA protocol of

issuing a reset first. It may do this if desired, but

it is not needed. By not issuing the reset,

performance is improved through the reduction of

overhead but this must be done only for the

SanDisk products as other IDE products may not

have this feature.

1.5.6 Power Supply Requirements

This is a dual voltage product which means it

will operate at a voltage range of 3.30 volts ± 5%

or 5.00 volts ± 10% (± 5% for industrial versions).

FlashDrive Product Manual

2.0 FlashDrive Product Specifications

For all the following specifications, values are

defined at ambient temperature and nominal

supply voltage unless otherwise stated.

2.1 FlashDrive System Environmental

Specifications

Standard FlashDrive Industrial FlashDrive

Temperature Operating:

Non-Operating:

0° C to 60° C

-25° C to 85° C

-40˚ C to 85˚ C

-50˚ C to 100˚ C

Humidity Operating:

Non-Operating:

8% to 95%, non-condensing

Acoustic Noise: 0 dB 0 dB

Vibration Operating:

Non-Operating:

15 G peak to peak max.

Shock Operating:

Non-Operating:

1,000 G max.

Altitude

(relative to

sea level)

Operating:

Non-Operating:

80,000 feet max.

FlashDrive Product Manual

2.2 System Power Requirements

Standard 1.8" FlashDrive

(Model SDIB)

Industrial 1.8" FlashDrive

(Model SDIBI)

DC Input Voltage (VCC)

100 mV max. ripple(p-p)

3.3 V ± 5% 5 V ± 10% 3.3 V ± 5% 5 V ± 5%

+5 V Currents

(maximum Average value)

See Notes.

Sleep:

Reading:

Writing:

Read/Write Peak

200 µA

(Slow - Fast)

32 mA - 45 mA

32 mA - 60 mA

150 mA/50µs

500 µA

(Slow - Fast)

46 mA - 75 mA

46 mA - 90 mA

150 mA/50µs

200 µA

(Slow - Fast)

32 mA - 45 mA

32 mA - 60 mA

150 mA/50µs

500 µA

(Slow - Fast)

46 mA - 75 mA

46 mA - 90 mA

150 mA/50µs

Standard 2.5" and 3.5"

FlashDrive

(Models SD25B and SD35B)

Industrial 2.5" and 3.5"

FlashDrive

(Models SD25BI

and SD35BI)

DC Input Voltage (VCC)

100 mV max. ripple(p-p)

3.3 V ± 5% 5 V ± 10% 3.3 V ± 5% 5 V ± 5%

+5 V Currents

(maximum Average value)

See Notes.

Sleep:

Reading:

Writing:

Read/Write Peak

200 µA

(Slow - Fast)

32 mA - 80 mA

150 mA/50µs

500 µA

(Slow - Fast)

46 mA - 120 mA

150 mA/50µs

200 µA

(Slow - Fast)

32 mA - 80 mA

150 mA/50µs

500 µA

(Slow - Fast)

46 mA - 120 mA

150 mA/50µs

Note 1. All values quoted are typical at ambient temperature and nominal supply voltage unless otherwise stated.

Note 2. Sleep mode current is specified under the condition that all drive inputs are at static CMOS levels and in a

“Not Busy” operating state.

Note 3. The currents specified show the complete range of programmability in the FlashDrive memory drive. A

tradeoff between performance and maximum current used can be done using the Set Features command.

The FlashDrive defaults to the fastest speed and highest current. See the Set Features command for more

details.

2.3 System Performance

All performance timings assume the FlashDrive

controller is in the default (i.e., fastest) mode at

Vcc = 5.0 volts.

Start Up Times

Sleep to write:

Sleep to read:

Reset to ready:

2.5 msec maximum

2.0 msec maximum

50 msec typical

400 msec maximum

Active to Sleep Delay Programmable

Data Transfer Rate To/From Flash 4.0 MBytes/sec burst

Data Transfer Rate To/From Host 6.0 MBytes/sec burst

Controller Overhead Command to DRQ 1.25 msec maximum

Note: The Sleep to Write and Sleep to Read times are the times it takes the FlashDrive to exit sleep mode when

any command is issued by the host to when the drive is reading or writing. The FlashDrive does not require a

reset to exit sleep mode. See section 1.5.5.

FlashDrive Product Manual

2.4 System Reliability and Maintenance

MTBF (@ 25°C) >1,000,000 hours

Preventive Maintenance None

Data Reliability

<1 non-recoverable error in 10

14

bits read

Endurance Standard FlashDrives 300,000 erase/program cycles per logical

sector

Endurance Industrial FlashDrives 100,000 erase/program cycles per logical

sector

2.5 Physical Specifications

See Figures 2-1 through 2-5 for additional

information.

1.8" FlashDrive 2.5" FlashDrive 3.5" FlashDrive

Length: 76.2 mm ± 0.20 mm (3 ±.008 in.) 100.2 mm ± 0.51 mm 150 mm maximum

Width: 50.8 mm ± 0.20 mm (2 ± .008 in.) 69.85 mm ± 0.51 mm 101.6 mm ± 0.2 mm

Thickness: 9.6 mm maximum (.378 in.) 6.0 mm ± 0.51 mm 15 mm maximum

Weight: 45 g (1.6 oz) typical 120 g maximum 240 g maximum

FlashDrive Product Manual

2.6 Capacity Specifications

The table below shows the specific capacity for

the various models and the default number of

heads, sectors per track and cylinders.

Model

Number

Form

Factor

Capacity

(formatted)

Sectors/Card

(Max LBA+1)

No. of

Heads

No. of

Sectors/Track

No. of

Cylinders

SDIB/SDIBI-4 1.8-inch 4,030,464 bytes 7,872 2 32 123

SDIB/SDIBI-10 1.8-inch 10,485,760 bytes 20,480 2 32 320

SDIB/SDIBI-20 1.8-inch 20,971,520 bytes 40,960 2 32 640

SDIB/SDIBI-40 1.8-inch 41,943,040 bytes 81,920 4 32 640

SDIB/SDIBI-80 1.8-inch 83,886,080 bytes 163,840 8 32 640

SDIB/SDIBI-140 1.8-inch 140,771,328 bytes 274,944 12 32 716

SDIB/SDIBI-220 1.8-inch 220,200,960 bytes 430,080 16 32 840

SD25B/SD25BI-20 2.5-inch 20,054,016 bytes 39,168 2 32 612

SD25B/SD25BI-40 2.5-inch 40,108,032 bytes 78,336 4 32 612

SD25B/SD25BI-60 2.5-inch 60,162,048 bytes 117,504 6 32 612

SD25B/SD25BI-80 2.5-inch 80,216,064 bytes 156,672 8 32 612

SD25B/SD25BI-100 2.5-inch 100,007,936 bytes 195,328 8 32 763

SD25B/SD25BI-220 2.5-inch 220,200,960 bytes 430,080 16 32 840

SD25B/SD25BI-350 2.5-inch 350,687,232 bytes 684,936 12 63 906

SD25B/SD25BI-440 2.5-inch 440,229,888 bytes 859,824 16 63 853

SD35B/SD35BI-20 3.5-inch 20,054,016 bytes 39,168 2 32 612

SD35B/SD35BI-40 3.5-inch 40,108,032 bytes 78,336 4 32 612

SD35B/SD35BI-60 3.5-inch 60,162,048 bytes 117,504 6 32 612

SD35B/SD35BI-80 3.5-inch 80,216,064 bytes 156,672 8 32 612

SD35B/SD35BI-100 3.5-inch 100,007,936 bytes 195,328 8 32 763

SD35B/SD35BI-220 3.5-inch 220,200,960 bytes 430,080 16 32 840

SD25B/SD25BI-350 3.5-inch 350,687,232 bytes 684,936 12 63 906

SD25B/SD25BI-440 3.5-inch 440,229,888 bytes 859,824 16 63 853

FlashDrive Product Manual

Figure 2-1 1.8-Inch FlashDrive System Dimensions

FlashDrive Product Manual

Figure 2-2 2.5-inch FlashDrive

FlashDrive Product Manual

Figure 2-3 2.5-inch FlashDrive Dimensions

FlashDrive Product Manual

Figure 2-4 3.5-inch FlashDrive

FlashDrive Product Manual

3.63 in.

92.2mm

4.0 in. ± .0078

101.6mm ± 0.2

5.9 in. max.

150mm max.

.59 in. max.

15mm max.

1.75 in.

44.45mm

2.375 in.

60.3mm

1.75 in.

44.45mm

2.43 in.

61.72mm

.630 in.

16.0mm

.250 in.

6.35mm

Figure 2-5 3.5-inch FlashDrive Dimensions

FlashDrive Product Manual

3.0 Installation and Mounting

3.1 Preparing to Install the FlashDrive

Follow the procedure below to prepare for the

FlashDrive installation:

1. If replacing an existing hard disk drive,

make sure that all data on that drive has

been properly backed up.

2. Turn off the power to the host computer

system and unplug the power supply cord.

The host system’s power must be off during

the entire installation procedure.

3. Using a grounding strap, make sure that

you are properly grounded. You must be

grounded during the entire installation

procedure and when handling the

FlashDrive.

4. Remove the host computer system’s cover.

Caution: Be sure to check with the host

system’s user’s manual and the terms and

conditions of the system’s warranty before

removing the cover. Removing the cover of

a laptop computer may be difficult and

could void the system’s warranty.

5. If replacing the computer system’s existing

hard drive, remove the hard drive.

If the FlashDrive is being installed as a single

drive, go to section 3.3 to finish the installation

process. If the FlashDrive is being installed in a

two drive configuration, follow the steps in section

3.2 below to set the jumpers and then go to section

3.3 to finish the installation.

3.2 Installing the FlashDrive in a Two

Drive Configuration

If the FlashDrive is being installed in a system

that has either a hard disk or another

FlashDrive already installed, a jumper may need

to be installed for the FlashDrive(s) to operate

properly.

3.2.1 Jumper Settings for 1.8- and 2.5-inch

FlashDrives

If the FlashDrive is being installed as the second,

or Slave drive, in a two drive configuration, pin B

or pin C must be grounded (see the Figures 3-1 and

3-2). Pins B and C are pulled-up input pins that

are shorted together internally (Pins A and D are

ground.) These pins are used to configure the

FlashDrive as a slave device. When either pin B

or pin C is grounded by the user, either using a

shunt jumper or through a ground on the host

motherboard if a 50 pin connector is used, the

FlashDrive is configured as a Slave device.

If both pins B and C remain open, the FlashDrive

is configured as a master in a master/slave

configuration or as the only drive in a single drive

system.

A B

C D

Pin 1

Master or Single Drive

A B

C D

Pin 1

Slave

Figure 3-1

1.8-inch FlashDrive Master/Slave

Configuration Pins

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SanDisk SD25B-100 User manual

SanDisk SD25B-100 User manual

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