Datasheet

Serial ATA Flash Drive
APS25AXXxxxx-XTM
6
©2013 Apacer Technology Inc. Rev. 1.1
2. Software Interface
2.1 Command Set
Table 2-1 summarizes the ATA commands supported by SFD25A-M.
Table 2-1: Command set
Code
Command
Code
Command
E5
h
Check Power Mode
F6h
Security Disable Password
90h
Execute Diagnostics
F3h
Security Erase Prepare
E7h
Flush Cache
F4h
Security
Erase Unit
ECh
Identify Device
F5h
Security Freeze Lock
E3h
Idle
F1h
Security Set Password
E1h
Idle Immedi
ate
F2h
Security Unlock
91h
Initialize Device Parameters
7xh
Seek
C8h
Read DMA
EFh
Set Features
25h
Read DMA EXT
C6h
Set Multiple Mode
60h
Read FPDMA Queued
E6h
Sleep
47h
Read Log DMA EXT
B0h
S.M.A.R.T.
2Fh
Read Log EXT
E2h
Standby
C4h
Read Multiple
E0h
Standby Immediate
20 or 21h
Read Sector(s)
CAh
Write DMA
40 or 41h
Read Verify Sector(s)
35h
Write DMA EXT
10h
Recalibrate
61h
Write FPDMA Queued
57h
Write Log DMA EXT
3Fh
Write Log EXT
C5h
Write Multiple
30h or 31h
Write Sector(s)
2.2 S.M.A.R.T.
S.M.A.R.T. is an abbreviation for Self-Monitoring, Analysis and Reporting Technology, a self-monitoring
system that provides indicators of drive health as well as potential disk problems. It serves as a warning for
users from unscheduled downtime by monitoring and displaying critical drive information. Ideally, this should
allow taking proactive actions to prevent drive failure and make use of S.M.A.R.T. information for future product
development reference.
Apacer devices use the standard SMART command B0h to read data out from the drive to activate our
S.M.A.R.T. feature that complies with the ATA/ATAPI specifications. S.M.A.R.T. Attribute IDs shall include
initial bad block count, total later bad block count, maximum erase count, average erase count, power on hours
and power cycle. When the S.M.A.R.T. Utility running on the host, it analyzes and reports the disk status to the
host before the device reaches in critical condition.
Note: attribute IDs may vary from product models due to various solution design and supporting capabilities.