S225 SATA SSD
2.5” Solid State SATA Drives
Engineering Specification
Document Number L500285
Revision: C
No part of this document may be reproduced, copied, recorded, stored in a retrieval system, or transmitted in any
form without the written permission of Delkin Devices. This document is for informational use only and is subject to
change without prior notice. Delkin Devices assumes no responsibility for any errors that may appear in this
document.
© 2013 | Delkin Devices Inc.
S225 2.5” SATA SSD
L500285 Rev. C
Table of Contents
1.0
General Specifications .............................................................................................................. 3
1.1
1.2
2.0
Functional Block Diagram ............................................................................................................................................. 4
Part Numbers ............................................................................................................................................................... 5
Mechanical Specifications ......................................................................................................... 6
2.1
3.0
Dimensions ................................................................................................................................................................... 6
Product Specifications ............................................................................................................... 7
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
4.0
System Interface and Configuration ............................................................................................................................. 7
System Performance .................................................................................................................................................... 7
I/O Performance ........................................................................................................................................................... 7
Supply Voltage ............................................................................................................................................................. 7
System Power Consumption ........................................................................................................................................ 7
System Reliability ......................................................................................................................................................... 8
Environmental Specifications ........................................................................................................................................ 9
Capacity Information* ................................................................................................................................................... 9
Electrical Interface Specification .............................................................................................. 10
4.1
Serial ATA Interface connector ................................................................................................................................... 10
4.2
Pin Assignments ......................................................................................................................................................... 10
4.3
Absolute Maximum Ratings 3.3 Volt ........................................................................................................................... 11
4.4
Absolute Maximum Ratings 5 Volt .............................................................................................................................. 11
4.5
Electrical Characteristics ............................................................................................................................................ 11
4.5.1
In 3.3 Volt Circuit................................................................................................................................................ 11
4.5.2
In 5 Volt Circuit................................................................................................................................................... 11
5.0
Command Descriptions ........................................................................................................... 12
5.1
5.2
6.0
Supported ATA Commands ........................................................................................................................................ 12
Identify Device Parameters......................................................................................................................................... 14
SMART Feature Set ................................................................................................................ 17
6.1
6.2
6.3
Sub Command Sets.................................................................................................................................................... 17
SMART Data Structure ............................................................................................................................................... 18
SMART Attributes ........................................................................................................................................................ 19
List of Figures
Figure 1. Functional Block Diagram ............................................................................................................................................... 4
Figure 2. Physical Dimensions ....................................................................................................................................................... 6
Figure 3. 22 pin (7+15) SATA connector ...................................................................................................................................... 10
List of Tables
Table 1. General Specifications……………………………………………………………………………………………………………..3
Table 2. Part Numbers……………………………………………………………………………………………………………………......5
Table 3. Endurance Estimates by Part Number…………………………………………………………………………………………...8
Table 4. Supported ATA Commands………………………………………………………………………………………………………12
Table 5. Identify Device Parameters……………………………………………………………………………………………………….14
© 2013 | Delkin Devices Inc.
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S225 2.5” SATA SSD
L500285 Rev. C
1.0 General Specifications
The S225 Series of 2.5” SATA II drives represents Delkin Device’s next generation in solid state technology,
delivering the performance, reliability and endurance demanded by embedded industrial users. Delkin’s
drives are offered in four product grades: SLC Industrial, SLC Commercial, MLC Industrial and MLC
Commercial, in capacities from 8GB to 512GB. This broad product range allows customers to select the
optimum product for their application, whether as a boot drive or for heavy data capture, based on read/write
performance, endurance, temperature range or cost per GB. Superior resistance to shock and vibration,
along with optional conformal coating, make them ideal for embedded systems and harsh environments.
Table 1. General Specifications
Specification
Value
Model Numbers
See Table 2
Capacity
SLC:
MLC:
Form Factor
SFF-8201 Specification for 2.5” Form Factor
(Small Form Factor Committee)
Interface
SATA revision 2.6, compatible with SATA 1.5Gb/s and 3.0Gb/s
interface rates.
Interface connector
22 Pin (7 +15) SATA connector (see Section 4 for pin-out)
Hot swappable
Yes
Environmental certifications
RoHS and CE/FCC
8GB – 256GB
16GB – 512GB
Performance
Interface burst speed
1.5 or 3.0 Gb/s
Sustained read (512 byte)
Up to 240 MB/s (varies by configuration)
Sustained write (512 byte)
Up to 190 MB/s (varies by configuration)
Reliability/Endurance
MTBF
>300,000 power on hours @ 60°C
Endurance (TBW)
See table in section 3.6
Features
TRIM
Supports TRIM based on ATA-8
Native Command Queuing
Supports up to 32 Commands
Power
Supply voltage (operating)
3.3V ±10%
5.0V ±10%
Idle
190mA
140mA
Read
300mA
210mA
Write
530mA
350mA
Typical current:
(may vary with drive configuration)
© 2013 | Delkin Devices Inc.
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Environmental
Storage temperature (°C)
-50 ~ 100°C
Operating temperature options (°C):

SLC Industrial
-40 ~ 85°C

SLC Commercial
0 ~ 70°C

MLC Industrial
-40 ~ 85°C

MLC Commercial
0 ~ 70°C
Vibration (operating/non-operating)
20G (80 – 2000 Hz)
Shock (operating/non-operating)
1,500G/0.5 ms
Acoustic noise
0 dB
Physical Dimensions
Height
9.20 ±0.15mm (0.36”)
Width
69.75 +0.25mm/-0.15mm (2.75”)
Length
99.70 ± 0.25mm (3.93”)
1.1 Functional Block Diagram
NAND
SATA
Host Interface
CONTROLLER
Flash
128MB DRAM
Figure 1. Functional Block Diagram
© 2013 | Delkin Devices Inc.
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1.2 Part Numbers
Table 2. Part Numbers
Product Grades
Capacity
8GB
16GB
32GB
64GB
128GB
256GB
512GB
MLC Commercial Grade
(0° to 70°C)
MLC Industrial Grade
(-40° to 85°C)
SLC Commercial Grade
(0° to 70°C)
SLC Industrial Grade
(-40° to 85°C)
Part Numbers
SLC Commercial Grade
DS08TFHXK-25000-D
SLC Industrial Grade
DE08TFHXP-25000-D
MLC Commercial Grade
DS16NFWXK-25000-D
MLC Industrial Grade
DE16NHUXP-25000-D
SLC Commercial Grade
DS16TFNXK-25000-D
SLC Industrial Grade
DE16TFNXP-25000-D
MLC Commercial Grade
DS32NFXXK-25000-D
MLC Industrial Grade
DE32NGTXP-25000-D
SLC Commercial Grade
DS32TFNXK-25000-D
SLC Industrial Grade
DE32TFNXP-25000-D
MLC Commercial Grade
DS64NFFXK-25000-D
MLC Industrial Grade
DE64NKBXP-25000-D
SLC Commercial Grade
DS64MGGXK-25000-D
SLC Industrial Grade
DE64MGGXP-25000-D
MLC Commercial Grade
DS1HNHEXK-25000-D
MLC Industrial Grade
DE1HNKBXP-25000-D
SLC Commercial Grade
DS1HMGMXK-25000-D
SLC Industrial Grade
DE1HMGMXP-25000-D
MLC Commercial Grade
DS2HNHDXK-25000-D
MLC Industrial Grade
DE2HNKCXP-25000-D
SLC Commercial Grade
DS2HMGMXK-25000-D
SLC Industrial Grade
DE2HMGMXP-25000-D
MLC Commercial Grade
DS5HNHDXK-25000-D
MLC Industrial Grade
DE5HNKCXP-25000-D
*Note: Usable capacities are within 10% of the gross capacity figures shown above, which is typical with
all NAND flash devices, as a small portion of the total is needed for controller firmware and spare block
reserves.
© 2013 | Delkin Devices Inc.
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S225 2.5” SATA SSD
L500285 Rev. C
2.0 Mechanical Specifications
2.1 Dimensions
Dim ens i o n
Me as ur em ent
Height
9.20 mm ±0.15 (0.36”)
Width
69.75 mm +0.25/-0.15 (2.75”)
Length
99.70 mm ±0.25 (3.93”)
Figure 2. Physical Dimensions
Note: All dimensions are in millimeters
© 2013 | Delkin Devices Inc.
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3.0 Product Specifications
3.1 System Interface and Configuration





Interface burst speed: 3.0 Gb/s
PIO 0-4
Up to UDMA mode 6 (Ultra DMA133)
Fully compatible with ATA-7 Standard
SATA Rev. 2.6
3.2 System Performance
Read / Write
SLC Performance
MLC Performance
Sequential Read
Up to 240 MB/s*
Up to 240 MB/s*
Sequential Write
Up to 190 MB/s*
Up to 185 MB/s*
*Dependent upon drive capacity and flash configuration.
3.3 I/O Performance
Sequential
Read
Sequential
Write
Random Read
Random Write
512B
18300
13500
7500
1700
4KB
14600
10100
4400
650
Units
I/Os per second
3.4 Supply Voltage
Item
Requirements
3.3 V ± 10%
Operating Voltages
5 V ± 10%
3.5 System Power Consumption
P o we r S t a t e
Current @ 3.3 V
Current @ 5 V
Idle
190 mA
140 mA
Read
300 mA
210 mA
Write
530 mA
350 mA
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3.6 System Reliability
MTBF
Attribute
Value
MTBF
>300,000 power-on hours @ 60°C
Endurance
The table below provides estimates of drive endurance (expressed as Terabytes Written or TBW) based
on specific workload scenarios, using a theoretical model that takes into account the specific flash
specifications in each drive configuration. Contact Delkin for endurance estimates for other specific
workload scenarios.
Table 3. Endurance Estimates by Part Number
Sequential Write Size, 24/7 Operation
Part Number(s)
DS08TFHXK-25000-D
DE08TFHXP-25000-D
1000 Bytes/Sec
5000 Bytes/Sec
8GB SLC, Commercial or Industrial Grade
8 TBW
18 TBW
DS16TFNXK-25000-D
DE16TFNXP-25000-D
16GB SLC, Commercial or Industrial Grade
16 TBW
36 TBW
DS32MJUXK-25000-D
DE32MJUXP-25000-D
32GB SLC, Commercial or Industrial Grade
31 TBW
69 TBW
DS64MGGXK-25000-D
DE64MGGXP-25000-D
64GB SLC, Commercial or Industrial Grade
33 TBW
133 TBW
DS1HMGMXK-25000-D
DE1HMGMXP-25000-D
128GB SLC, Commercial or Industrial Grade
61 TBW
259 TBW
DS2HMGMXK-25000-D
DE2HMGMXP-25000-D
256GB SLC, Commercial or Industrial Grade
120 TBW
500 TBW
16GB MLC, Commercial or Industrial Grade
<1 TBW
1 TBW
32GB MLC, Commercial or Industrial Grade
1 TBW
3 TBW
64GB MLC, Commercial or Industrial Grade
1 TBW
6 TBW
128GB MLC, Commercial or Industrial Grade
3 TBW
12 TBW
256GB MLC, Commercial or Industrial Grade
5 TBW
25 TBW
512GB MLC, Commercial or Industrial Grade
11 TBW
46 TBW
DS16NFXPK-25000-D
DE16NHUXP-25000-D
DS32NFXXK-25000-D
DE32NGTXP-25000-D
DS64NFFXK-25000-D
DE64NKBXP-25000-D
DS1HNHEXK-25000-D
DE1HNKBXP-25000-D
DS2HNHDXK-25000-D
DE2HNKCXP-25000-D
DS5HNHDXK-25000-D
DE5HNKCXP-25000-D
Description
The figures provided are estimates and not guarantees of endurance. Actual results may vary depending on usage, operating
temperature and other conditions.
© 2013 | Delkin Devices Inc.
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3.7 Environmental Specifications
Features
Operating
MLC Commercial Grade: 0 ~ 70°C
MLC Industrial Grade: 40 ~ 85°C
Operating Temperature
SLC Commercial Grade: 0 ~ 70°C
SLC Industrial Grade: -40 ~ 85°C
Storage Temperature
-50 ~ 100°C
Vibration
20 G peak to peak max. (operating/non-operating)
Shock
1500 G max. (operating/non-operating)
Acoustic Noise
0 dB
3.8 Capacity Information*
Drive Size
Cylinders
Heads
Sectors
Total Sectors
8GB
15,538
16
63
15,466,496
16GB
16,383
15
63
30,932,992
32GB
16,383
15
63
61,865,984
64GB
16,383
15
63
123,731,968
128GB
16,383
15
63
247,463,936
256GB
16,383
15
63
494,927,872
512GB
16,383
15
63
989,855,744
*Note that for any drive with a capacity over 8GB, these are not true CHS settings, as the drive is in LBA mode
and is only emulating CHS settings.
© 2013 | Delkin Devices Inc.
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4.0 Electrical Interface Specification
4.1 Serial ATA Interface connector
The Host is connected to the SSD with a standard 22 pin (7 + 15) SATA connector.
Figure 3. 22 pin (7+15) SATA connector
4.2 Pin Assignments
Signal Segment Pinout
Pin
Signal
S1
GND
S2
RX+
S3
RX-
S4
GND
S5
TX-
S6
TX+
S7
GND
Power Ground
Differential signal pair A
Power Ground
Differential signal pair B
Power Ground
Power Segment Pinout
Pin
Signal
P1
V3
3.3V Power Input
P2
V3
3.3V Power Input
P3
V3
3.3V Power Input
P4
GND
Ground
P5
GND
Ground
P6
GND
Ground
P7
V5
5V Power Input
P8
V5
5V Power Input
P9
V5
5V Power Input
P10
GND
P11
Reserved
P12
GND
Ground
P13
N.C.
No Connection
P14
N.C.
No Connection
P15
N.C.
No Connection
© 2013 | Delkin Devices Inc.
Ground
Activity LED
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4.3 Absolute Maximum Ratings 3.3 Volt
Parameters
Symbol
Min
Max
Unit
Input Voltage
Vcc
-0.3
3.6
V
4.4 Absolute Maximum Ratings 5 Volt
Parameters
S ym b o l
Mi n
Ma x
Unit
Input Voltage
Vcc
-0.3
5.5
V
4.5 Electrical Characteristics
4.5.1 In 3.3 Volt Circuit
Parameters
Symbol
Typical
Unit
Supply Voltage
Vcc
3.3 ± 10%
V
Idle Current
ISLP
190
mA
Read Current
IACTR
300
mA
Write Current
IACTW
530
mA
TX Differential Output Voltage
VdiffTx
500
mVppd
RX Differential Input Voltage
VdiffRx
400
mVppd
Symbol
Typical
Unit
Supply Voltage
Vcc
5 ± 10%
V
Idle Current
ISLP
140
mA
Read Current
IACTR
210
mA
Write Current
IACTW
350
mA
TX Differential Output Voltage
VdiffTx
500
mVppd
RX Differential Input Voltage
VdiffRx
400
mVppd
4.5.2 In 5 Volt Circuit
Parameters
© 2013 | Delkin Devices Inc.
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5.0 Command Descriptions
5.1 Supported ATA Commands
Table 4: Supported ATA Commands
Command Name
Command
Code (Hex)
Protocol
General Feature Set
Execute Drive Diagnostic
90h
Device diagnostic
Flush Cache
E7h
Non-data
Identify Device
ECh
PIO data-in
Read DMA
C8h
DMA
Read Multiple
C4h
PIO data-in
Read Sector(s)
20h
PIO data-in
Read Verify Sector(s)
40h or 41h
Non-data
Set Feature
Efh
Non-data
Set Multiple Mode
C6h
Non-data
Write DMA
CAh
DMA
Write Multiple
C5h
PIO data-out
Write Sector(s)
30h
PIO data-out
NOP
00h
Non-data
Read Buffer
E4h
PIO data-in
Write Buffer
E8h
PIO data-out
Power Management Feature Set
Check Power Mode
E5h or 98h
Non-data
Idle
E3h or 97h
Non-data
Idle Immediate
E1h or 95h
Non-data
Sleep
E6h or 99h
Non-data
Standby
E2h or 96h
Non-data
Standby Immediate
E0h or 94h
Non-data
Security Set Password
F1h
PIO data-out
Security Unlock
F2h
PIO data-out
Security Erase Prepare
F3h
Non-data
Security Erase Unit
F4h
PIO data-out
Security Freeze Lock
F5h
Non-data
Security Disable Password
F6h
PIO data-out
Security Mode Feature Set
© 2013 | Delkin Devices Inc.
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Command
Code (Hex)
Protocol
SMART Disable Operations
B0h
Non-data
SMART Enable / Disable Autosave
B0h
Non-data
SMART Enable Operations
B0h
Non-data
SMART Return Status
B0h
Non-data
SMART Execute Off-line Immediate
B0h
Non-data
SMART Read Data
B0h
Non-data
Read Native Max Address
F8h
Non-data
Set Max Address
F9h
Non-data
Set Max Set Password
F9h
PIO data-out
Set Max Lock
F9h
Non-data
Set Max Freeze Lock
F9h
Non-data
Set Max Unlock
F9h
PIO data-out
Flush Cache Ext
EAh
Non-data
Read Sector(s) Ext
24h
PIO data-in
Read DMA Ext
25h
DMA
Read Multiple Ext
29h
PIO data-in
Read Native Max Address Ext
27h
Non-data
Read Verify Sector(s) Ext
42h
Non-data
Set Max Address Ext
37h
Non-data
Write DMA Ext
35h
DMA
Write DMA FUA Ext
3Dh
DMA
Write Multiple Ext
39h
PIO data-out
Write Multiple FUA Ext
CEh
PIO data-out
Write Sector(s) Ext
34h
PIO data-out
Read FPDMA Queued
60h
DMA Queued
Write FPDMA Queued
61h
DMA Queued
Command Name
SMART Feature Set
Host Protected Area Feature Set
48-bit Address Feature Set
NCQ Feature Set
© 2013 | Delkin Devices Inc.
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5.2 Identify Device Parameters
The IDENTIFY DEVICE Command enables the host to receive parameter information from the device. The
following table provides the definition and value of each field in the Identify Device Information.
Table 5: Identify Device Parameters
Word Address
Default Value
0
044Ah
F
General configuration bit
1
XXXXh
X
Default number of cylinders
2
0000h
V
Reserved
3
00XXh
X
Default number of heads
4
0000h
X
Obsolete
5
0240h
X
Obsolete
6
XXXXh
F
Default number of sectors per track
7-8
XXXXh
V
Number of sectors per card
9
0000h
X
Obsolete
10-19
XXXXh
F
Serial number in ASCII
20
0002h
X
Obsolete
21
0002h
X
Obsolete
22
0000h
X
Obsolete
23-26
XXXXh
F
Firmware revision in ASCII
27-46
XXXXh
F
Model number in ASCII
47
8001h
F
Max number of sectors on Read/Write Multiple command
48
0000h
F
Reserved
49
0F00h
F
Capabilities
50
4000h
F
Capabilities
51
0200h
F
PIO data transfer cycle timing mode
52
0000h
X
Obsolete
53
0007h
F
Field Validity
54
XXXXh
X
Current numbers of cylinders
55
XXXXh
X
Current numbers of heads
56
XXXXh
X
Current sectors per track
57 - 58
XXXXh
X
Current capacity in sectors (LBAs)
(Word 57 = LSW, Word 58 = MSW)
59
0100h
F
Multiple sector setting
60-61
XXXXh
F
Total number of sectors addressable in LBA Mode
62
0000h
X
Reserved
63
0007h
F
Multiword DMA transfer mode
Supports MDMA Modes 0,1 & 2
64
0003h
F
Advanced PIO modes supported
© 2013 | Delkin Devices Inc.
Fixed/Variable Data Field Type Information
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Word Address
Default Value
Fixed/Variable Data Field Type Information
65
0078h
F
Minimum Multiword DMA transfer cycle time per word
66
0078h
F
Recommended Multiword DMA transfer cycle time
67
0078h
F
Minimum PIO transfer cycle time without flow control
68
0078h
F
Minimum PIO transfer time with IORDY flow control
69-74
0000h
F
Reserved
75
001Fh
F
Queue Depth
0006h
F
Serial ATA capabilities
 Supports SATA Gen 1
 Supports SATA Gen 2
0206h
F
77
0000h
V
Reserved
78
0008h
F
Device supports initiating interface power management
79
0000h
V
Reserved
80
0080h
F
Major version number (ATAPI-7)
81
0000h
F
Minor version number
82
742Bh
F
Command sets supported 0
83
5500h
F
Command sets supported 1
84
4002h
F
Command sets supported 2
85 - 87
XXXXh
V
Command sets/feature enabled
88
007Fh
V
UDMA mode supported and selected
89
0003h
F
Time required for Security erase unit completion
90
0000h
F
Time required for Enhanced security erase unit completion
91
0000h
V
Current Advanced power management value
92
FFFeh
V
Master Password Revision Code
93-99
0000h
V
Reserved
100-103
XXXXh
V
Maximum user LBA for 48bit address feature set
104-127
0000h
V
Reserved
128
0001h
V
Security status
129-159
0000h
X
Vendor unique bytes
160
0000h
F
Power requirement description
161
0000h
X
Reserved
162
0000h
F
Key management schemes supported
163
0000h
F
CF Advanced True IDE Timing Mode Capability and Setting
164 – 216
0000h
V
Reserved
217
0100h
F
Non-rotating media (SSD)
218 – 255
0000h
X
Reserved
76
© 2013 | Delkin Devices Inc.

Supports receipt of host-initiated interface power
management requests
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Notes:
1. F= content (byte) is fixed and does not change.
2. V= content (byte) is variable and may change depending on the state of the device or the commands
executed by the device.
3. X= content (byte) is vendor specific and may be fixed or variable.
© 2013 | Delkin Devices Inc.
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6.0 SMART Feature Set
The Delkin S225 drives feature Self-Monitoring, Analysis and Reporting Technology (SMART). Enabled by readilyavailable software utilities, SMART can monitor online storage devices for failure prediction, status reporting, and
bad sector detection and repair. SMART can protect against system downtime and prevent data loss.
6.1 Sub Command Sets
In order to select a subcommand, the host must write the subcommand code to the device’s Features Register
before issuing the SMART Function Set command. The subcommands are listed below:
Value
Subcommand
Descr ipt ion
D0h
READ DATA
Retrieves SMART information from the device, which is
packed into the data structure as defined in Section 6.2
D1h
READ ATTRIBUTETHRESHOLD
This command is obsolete as of ATA-4 and later
versions, but is maintained for backward compatibility.
D2h
ENABLE/DISABLE AUTOSAVE
Enables / disables optional attribute auto-save feature,
however, the auto-save feature is always enabled.
D3h
SAVE ATTRIBUTE VALUES
This command is obsolete as of ATA-6 and later
versions, but is maintained for backward compatibility.
Attribute values are saved automatically.
D4h
EXECUTE OFF-LINE IMMEDIATE
This command initiates activities that collect SMART
data or execute self-diagnostic test routines in an offline mode or captive mode, however there are currently
no self-test or off-line data collection capabilities.
D5h
RESERVED
D6h
RESERVED
D8h
ENABLE SMART OPERATIONS
This command enables access to all SMART
command operations.
D9h
DISABLE SMART OPERATIONS
This command disables access to all SMART
command operations.
RETURN STATUS
This command returns the reliability status of the
device to the host. This reliability status is determined
by comparing the number of available spare blocks to
the minimum spare block threshold.
DAh
If the reserved size is below the threshold, the status can be read from the Cylinder Register using the Return
Status command (DAh.) Please note that D1h and D3h are obsolete commands according to ATA-7, but are still
provided to maintain backward compatibility with previous ATA specifications
© 2013 | Delkin Devices Inc.
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6.2 SMART Data Structure
The following table describes the data structure returned by the “SMART Read Data (D0h)” Command.
Byte
Fixed/Variable
Data Field Type Information
0–1
X
Revision code
2 – 361
X
Vendor specific (See SMART Attributes)
362
V
Off-line data collection status
363
X
Self-test execution status byte
364 – 365
V
Total time in seconds to complete off-line data collection activity
366
X
Vendor specific
367
F
Off-line data collection capability
368 – 369
F
SMART capability
370
F
Error logging capability
 7-1 Reserved
 0
1=Device error logging supported
371
X
Vendor specific
372
F
Short self-test routine recommended polling time (in minutes)
373
F
Extended self-test routine recommended polling time (in minutes)
374
F
Conveyance self-test routine recommended polling time (in minutes)
375 – 385
R
Reserved
386 – 395
F
Firmware revision / Date code
396 – 397
F
Number of initial invalid blocks (396= MSB, 397= LSB)
398 – 399
F
Reserved
400 – 406
F
Vendor specific
407 – 415
X
Vendor specific
416
F
Reserved
417
F
Program/write to the strong page only
418 – 419
V
Number of spare blocks
420 – 423
V
Average Erase Count
424 – 510
X
Vendor specific
511
V
Data structure checksum
Notes:
1. F= content (byte) is fixed and does not change.
2. V= content (byte) is variable and may change depending on the state of the device or the commands
executed by the device.
3. X= content (byte) is vendor specific and may be fixed or variable.
4. R= content (byte) is reserved and shall be zero.
© 2013 | Delkin Devices Inc.
18
S225 2.5” SATA SSD
L500285 Rev. C
6.3 SMART Attributes
The following table defines the SMART data attributes currently supported and their descriptions, which are
located at offset 2 of the SMART Data Structure (see section 6.2.)
Attribute
ID
Attribute Name
0x01
Read Error Rate
0x05
Reallocated
Sectors Count
No
2
Total number of bad blocks that are generated
after the card is initialized by the pretest code.
0x09
Power-On Hours
No
4
Total accumulated hours the device is powered
on.
0x0C
Power Cycle
Count
No
2
Total number of power cycles that have occurred
during the life of the drive.
0xA0
Uncorrectable
Sector Count
during
Read/Write
Yes
4
Total count of uncorrectable errors when device
performing read/write operations.
0xA1
Number of Valid
Spare Blocks
No
2
Total number of overall valid spare blocks.
0xA3
Number of Initial
Invalid Blocks
No
2
Total number of bad blocks found during the card
initialization (pretest mode.)
0xA4
Total Erase
Count
No
7
Total number of erase operations that have been
performed on all the blocks (excluding the
system blocks, bad blocks and reserved blocks.)
0xA5
Maximum Erase
Count
No
4
The maximum number of erase operations that
have ever been performed on a single block
(excluding the system blocks, bad blocks and
reserved blocks.)
0xA6
Minimum Erase
Count
No
4
The minimum number of erase operations that
have ever been performed on a single block
(excluding the system blocks, bad blocks and
reserved blocks.)
0xA7
Average Erase
Count
No
4
The average number of erase operations over
the all available valid blocks (excluding the
system blocks, bad blocks and reserved blocks.)
0xC0
Power-Off
Retract Count
No
2
Total number of sudden power-off count that
affects the data reliability.
0xC6
Uncorrectable
Sector Count Offline
No
4
Total accumulated count of errors that cannot be
corrected by ECC engine for the life of the device
0xC7
UltraDMA CRC
Error Count
No
2
Total count of CRC errors during communication
via the interface cable.
© 2013 | Delkin Devices Inc.
Reset at
Power
On?
Yes
Max
Size
(Bytes)
4
Attribute Description
The rate of the total CRC errors occurred over
the total LBA’s read. The total LBA’s read will be
reset to 0 after each power cycle, while the CRC
errors will be accumulated over the life of the
drive.
19
S225 2.5” SATA SSD
L500285 Rev. C
0xF1
Total LBA’s Written
No
7
The lower 7 bytes of the 12-byte total number of
LBA’s written to the device. (The upper 5 byte
value is located at Attribute 0xF3).
0xF2
Total LBA’s Read
No
7
The lower 7 bytes of the 12-byte total number of
LBA’s read from the device. (The upper 5 byte
value is located at Attribute 0xF4).
0xF3
Total LBA’s Written
Expanded
No
5
The upper 5 bytes of the 12-byte total number of
LBA’s written to the device. (The lower 7 byte
value is located at Attribute 0xF1).
0xF4
Total LBA’s Read
Expanded
No
5
The upper 5 bytes of the 12-byte total number of
LBA’s read from the device. (The lower 7 byte
value is located at Attribute 0xF2).
Data Structure
The attribute information occupies 12 bytes of data which is described in the following table:
Byte
Description
0
Attribute ID
1–2
Reserved
3
Contains normalized fixed value (“0x64”)
4
Duplicate of byte 3, which is a fixed value (“0x64”)
5 – 11
Raw data value in little-endian format
© 2013 | Delkin Devices Inc.
20
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