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rohs recast compliant serial ata flash drive safd18s4 product specifications may 2 nd , 2013 version 1.5 apacer technology inc. 9/f, no. 100, hsin tai wu rd., hsichih, taipei hsie n 221, taiwan tel: +886-2-2696-1666 fax: +886-2-2696-1668 www.apacer.com apacer technology inc. 4 th fl., 75 hsin tai wu rd., sec.1, xizhi, new taipei city, taiwan 221 tel: +886-2-2698-2888 fax: +886-2-2698-2889 www.apacer.com
serial ata flash drive aps1845xxxxx-pxx 1 ? 2013 apacer technology inc. rev. 1.5 features: standard serial ata 2.6 (gen. 2) ? serial ata 2.6 (gen. 2) ? sata , 3.0 gbps ? ata-compatible command set capacities ? 4, 8, 16, 32, 64 gb performance* ? burst read/write: 300 mb/sec ? sustained read: up to 165 mb/sec ? sustained write: up to 150 mb/sec intelligent endurance design ? built-in hardware ecc, enabling up to 16/24 bit correction per 1k bytes ? static wear-leveling scheme together with dynamical block allocation to significantly increase the lifetime of a flash device and optimize the disk performance ? flash bad-block management ? s.m.a.r.t. ? power failure management ? ata secure erase ? trim nand flash type: slc endurance ? 4gb: 320 tbw ? 8gb: 640 tbw ? 16gb: 1,280 tbw ? 32gb: 2,560 tbw ? 64gb: 5,130 tbw temperature ranges ? operation: 0c to 70c (32 ~ 158f) ? extended: -40c to 85c (-40 ~ 185f) ? storage: -40c to 100c (-40 ~ 212f) supply voltage ? 5.0 v 5% power consumption (typical)* ? active mode: 335 ma ? idle mode: 95 ma form factor ? jedec mo-297 ? only 4mm in thickness ? dimensions (54 x 39.8 x 4, unit: mm) connector ? 7-pin sata signal connector ? 15-pin sata power connector shock & vibration** ? shock: 1500 g ? vibration: 15 g rohs recast compliant*** write protect (optional) ? enabled by onboard hardware switch * varies from capacities. the values addressed here a re typical and may vary depending on settings and p latforms. **non-operating ***complies with 2011/65/eu standard.
serial ata flash drive aps1845xxxxx-pxx 2 ? 2013 apacer technology inc. rev. 1.5 table of contents 1. product description ............................ ................................................... .................. 3 1.1 introduction ....................................... ................................................... ................................................... ....3 1.2 functional block diagram........................... ................................................... ............................................3 1.3 ata mode support ............................ ................................................... ................................................... ..4 1.4 capacity specification............................. ................................................... .................................................4 1.5 performance........................................ ................................................... ................................................... ...4 1.6 pin assignments .................................... ................................................... ................................................... 5 2. software interface ............................. ................................................... .................... 7 2.1 command set ........................................ ................................................... ................................................... 7 3. flash management ............................... ................................................... ................. 8 3.1 error correction/detection ......................... ................................................... ............................................8 3.2 bad block management............................... ................................................... ............................................8 3.3 wear leveling...................................... ................................................... ................................................... ..8 3.4 power failure management ........................... ................................................... .........................................8 3.5 ata secure erase ................................... ................................................... .................................................8 3.6 s.m.a.r.t. ......................................... ................................................... ................................................... ....9 3.7 trim............................................... ................................................... ................................................... .......9 4. environmental specifications ................... ................................................... ......... 10 4.1 environments....................................... ................................................... ................................................... 10 4.2 mean time between failures (mtbf).................. ................................................... ...............................10 4.3 certification and compliance ....................... ................................................... ........................................10 4.4 endurance ..................................... ................................................... ................................................... ........10 5. electrical characteristics ..................... ................................................... .............. 12 5.1 operating voltage .................................. ................................................... ................................................12 5.2 power consumption.................................. ................................................... .............................................12 6. physical characteristics....................... ................................................... .............. 13 6.1 dimensions ......................................... ................................................... ................................................... ..13 6.2 write protect switch (optional)............... ................................................... ...............................................14 7. product ordering information ................... ................................................... ......... 15 7.1 product code designations .......................... ................................................... .........................................15 7.2 valid combinations................................. ................................................... ...............................................16
serial ata flash drive aps1845xxxxx-pxx 3 ? 2013 apacer technology inc. rev. 1.5 1. product description 1.1 introduction apacer?s safd18s4 is a solid-state disk (ssd) drive that contains a controller, embedded firmware, and flash media along with a male connector. compliant with s ata ii standard, the drive conforms to most mainstr eam host system platforms with sata-compliant interface s, making it the primary storage solution for repla cing traditional hard disk drive. safd18s4 drive is designed with a powerful single-c hip controller, offering capacities of up to 64 gig abytes and providing full support for the sata high-speed interface standard. it can operate at s ustained access rates of up to 160 megabytes per second while opera ting at relatively low power consumption, this sata ssd is an ideal replacement for conventional hard disk drive in industrial computing applications. in addition, safd18s4 adopts the apacer-specific gl obal wear-leveling scheme to allow uniform use of a ll storage blocks, ensuring that the lifetime of a fla sh media can be significantly increased and the dis k performance is optimized as well. safd18s4 provides the s.m.a.r.t. feature that follows the sata rev. 2.6, ata/atapi specifications and uses the standard smar t command b0h to read data from the drive. this feature protects the user from unscheduled downtime by monitoring and storing critical drive performan ce. 1.2 functional block diagram safd18s4 drive includes a single-chip sata controller and the flash media, as well as the sata standard interface. the controller integrates the flash mana gement unit with the controller itself to support m ulti-channel, multi-bank flash arrays. figure 1-1 shows the funct ional block diagram. figure 1-1 apacer safd18s4 block diagram
serial ata flash drive aps1845xxxxx-pxx 4 ? 2013 apacer technology inc. rev. 1.5 1.3 ata mode support safd18s4 provides ata mode support as follows: up to pio mode-4 up to multiword dma mode-2 up to udma mode-5 1.4 capacity specification capacity specification of safd18s4 product family i s available as shown in table 1-1. it lists the spe cific capacity, the default numbers of logical cylinders and heads, and the number of logical sectors per tr ack for each product line. table 1-1 capacity specification capacity total bytes* cylinders heads sectors max lba* 4 gb 4,011,614,208 7,773 16 63 7,835,184 8 gb 8,012,390,400 15,525 16 63 15,649,200 16 gb 16,013,942,784 16,383 16 63 31,277,232 32 gb 32,017,047,552 16,383 16 63 62,533,296 64 gb 64,023,257,088 16,383 16 63 125,045,424 *display of total bytes varies from file systems. **cylinders, heads or sectors are not applicable fo r these capacities. only lba addressing applies. lba count addressed in the table above indicates to tal user storage capacity and will remain the same throughout the lifespan of the device. however, the total usable capacity of t he ssd is most likely to be less than the total phy sical capacity because a small portion of the capacity is reserved for device main tenance usages. 1.5 performance performance of safd18s4 is shown in table 1-2. table 1-2 performance specification capacity performance 4 gb 8 gb 16 gb 32 gb 64 gb sustained read (mb/s) 145 155 155 160 165 sustained write (mb/s) 50 105 105 145 150 note: performance var ies from flash configurations or host system settin gs.
serial ata flash drive aps1845xxxxx-pxx 5 ? 2013 apacer technology inc. rev. 1.5 1.6 pin assignments table 1-3 describes the safd signal segment, and ta ble1-4, power segment. figure 1-2 sata connectors table 1-3: signal segment table 1-4: power segment name type description pin signal/description s1 gnd p1 unused (3.3v) s2 rxp + differential receive signal p2 unused (3.3v) s3 rxn - differential receive signal p3 unused (3.3v) s4 gnd p4 ground s5 txn - differential transmit signal p5 ground s6 txp + differential transmit signal p6 ground s7 gnd p7 5v p8 5v p9 5v p10 ground p11 reserved p12 ground p13 unused (12v) p14 unused (12v) p15 unused (12v)
serial ata flash drive aps1845xxxxx-pxx 6 ? 2013 apacer technology inc. rev. 1.5 figure 1-3 sata cable/connector connection diagram the connector on the left represents the host with tx/rx differential pairs connected to a cable. the connector on the right shows the device with tx/rx differential pairs also connected to the cable. not ice also the ground path connecting the shielding of the cab le to the cable receptacle.
serial ata flash drive aps1845xxxxx-pxx 7 ? 2013 apacer technology inc. rev. 1.5 2. software interface 2.1 command set table 2-1 summarizes the ata commands supported by safd18s4. table 2-1: command set code command code command e5 h check power mode f3 h security erase prepare 06h data set management f4 h security erase unit 90 h execute device diagnostic f5 h security freeze lock e7 h flush cache f1 h security set password ea h flush cache ext f2 h security unlock e c h identify device 70h seek e3 h idle e f h set features e1 h idle immediate c6 h set multiple mode 91h initialize device parameters e6 h sleep c8 h read dma b0 h smart 25 h read dma ext e2 h stan d by c4 h read multiple e0 h standby immediate 29 h read multiple ext c a h write dma 20 h read sector 35 h wri te dma ext 24 h read sector ext c5 h write multiple 40 h read verify sectors 39 h write multiple ex t 42 h read verify sectors ext 30 h write sector 10h recalibrate 34 h write sector ext f6 h security disable password
serial ata flash drive aps1845xxxxx-pxx 8 ? 2013 apacer technology inc. rev. 1.5 3. flash management 3.1 error correction/detection safd18s4 implements a hardware ecc scheme, based on the bch algorithm. it can detect and correct up to 16 bits or 24 bits error in 1k bytes. 3.2 bad block management current production technology is unable to guarante e total reliability of nand flash memory array. whe n a flash memory device leaves factory, it comes with a minimal number of initial bad blocks during produc tion or out-of-factory as there is no currently known techn ology that produce flash chips free of bad blocks. in addition, bad blocks may develop during program/erase cycles. when host performs program/erase command on a block, bad block may appear in status register. sin ce bad blocks are inevitable, the solution is to ke ep them in control. apacer flash devices are programmed wit h ecc, block mapping technique and s.m.a.r.t to reduce invalidity or error. once bad blocks are det ected, data in those blocks will be transferred to free blocks and error will be corrected by designated algorithm s. 3.3 wear leveling flash memory devices differ from hard disk drives ( hdds) in terms of how blocks are utilized. for hdds , when a change is made to stored data, like erase or update, the controller mechanism on hdds will perf orm overwrites on blocks. unlike hdds, flash blocks can not be overwritten and each p/e cycle wears down th e lifespan of blocks gradually. repeatedly program/er ase cycles performed on the same memory cells will eventually cause some blocks to age faster than oth ers. this would bring flash storages to their end o f service term sooner. wear leveling is an important mechanis m that level out the wearing of blocks so that the wearing-down of blocks can be almost evenly distrib uted. this will increase the lifespan of ssds. comm only used wear leveling types are static and dynamic. 3.4 power failure management power failure management plays a crucial role when experiencing unstable power supply. power disruptio n may occur when users are storing data into the ssd. in this urgent situation, the controller would run multiple write-to-flash cycles to store the metadata for lat er block rebuilding. this urgent operation requires about several milliseconds to get it done. at the next po wer up, the firmware will perform a status tracking to retrieve the mapping table and resume previously programmed nand blocks to check if there is any incompleteness of transmission. 3.5 ata secure erase ata secure erase is an ata disk purging command cur rently embedded in most of the storage drives. defined in ata specifications, (ata) secure erase i s part of security feature set that allows storage drives to erase all user data areas. the erase process usuall y runs on the firmware level as most of the ata-bas ed storage media currently in the market are built-in with this command. ata secure erase can securely wi pe out the user data in the drive and protects it from mal icious attack.
serial ata flash drive aps1845xxxxx-pxx 9 ? 2013 apacer technology inc. rev. 1.5 3.6 s.m.a.r.t. s.m.a.r.t. is an abbreviation for self-monitoring, analysis and reporting technology, a self-monitorin g system that provides indicators of drive health as well as potential disk problems. it serves as a war ning for users from unscheduled downtime by monitoring and d isplaying critical drive information. ideally, this should allow taking proactive actions to prevent drive fai lure and make use of s.m.a.r.t. information for fut ure product development reference. apacer devices use the standard smart command b0h t o 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 inc lude initial bad block count, total later bad block coun t, 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 di sk status to the host before the device reaches in cri tical condition. note: attribute ids may vary from product models du e to various solution design and supporting capabil ities. 3.7 trim trim, though in capital letters usually, is a memor y computation command rather than an abbreviation. it is mainly a sata command that enables the operating sy stem to inform the ssd (solid state drive) which blocks of previously stored data are no longer vali d, due to erases by the host or operating system, s uch as file deletions or disk formatting. once notified, s sd will begin the discard of the invalid lbas and r etain more space for itself, in fact, the discarded is no long er recoverable. when an lba is replaced by the operating system, as with overwrite of a file, the ssd is informed that the originally occupied lba is determined as no longer in use or invalid. the ssd will not save those bloc ks in garbage collected sectors. noticeably, a file delet ion command by host or operating system never actua lly erases the actual content, rather, just the file is marked as deleted. this issue is even specifically noticeable for flash based memory devices, such as ssds. in fa ct, an ssd will keep garbage collecting the invalid , previously occupied lbas, if it is not informed tha t these lbas can be erased. thus, the ssd would experience a significant performance downfall.
serial ata flash drive aps1845xxxxx-pxx 10 ? 2013 apacer technology inc. rev. 1.5 4. environmental specifications 4.1 environments safd18s4 environmental specifications follow the us military standard mil-std-810f, as shown in below table. table 4-1 safd18s4 environmental specifications environment specification 0c to 70c (operating), -40c to 85c (operating-e xtended) temperature -40c to 100c (non-operating) vibration non-operating : sine wave, 15(g), 10~2000(hz), operating : random, 7.7(grms), 20~2000(hz) shock non-operating: acceleration, 1,500 g, 0.5 ms operating: peak acceleration, 50 g, 11 ms 4.2 mean time between failures (mtbf) mean time between failures (mtbf) is predicted base d on reliability data for the individual components in safd drive. the prediction result for the safd18s4 is more than 2,000,000 hours. notes about the mtbf: the mtbf is predicated and calculated based on ?tel cordia technologies special report, sr-332, issue 2 ? method. 4.3 certification and compliance safd18s4 complies with the following standards: ce fcc rohs recast mil-std-810f 4.4 endurance terabytes written (tbw) is an endurance rating syst em that indicates the maximum number of terabytes written by the host to the drive. nand flash has a limit on how many p/e cycles it can withstand befor e its data retention becomes unreliable. thus, key factor s, such as write amplifications and the number of p /e cycles, can influence the lifespan of the drive. the tbw of the device are listed in the following t able.
serial ata flash drive aps1845xxxxx-pxx 11 ? 2013 apacer technology inc. rev. 1.5 capacity terabytes written 4 gb 320 8 gb 640 16 gb 1,280 32 gb 2,560 64 gb 5,130 notes: the measurement assumes the data written to the ssd for test is under a typical and constant rate. the measurement follows the standard metric: 1 tb ( terabyte) = 1000 gb.
serial ata flash drive aps1845xxxxx-pxx 12 ? 2013 apacer technology inc. rev. 1.5 5. electrical characteristics 5.1 operating voltage table 5-1 lists the supply voltage for safd18s4. table 5-1 safd18s4 operating voltage parameter conditions supply voltage 5v 5% ( 4.75-5.25 v) 5.2 power consumption table 5-2 power consumption (typical) capacity mode 4 gb 8 gb 16 gb 32 gb 64 gb active (ma) 250 270 320 335 335 stand by (ma) 80 80 90 95 95 note: power consumpti ons may vary depending on settings and platforms
serial ata flash drive aps1845xxxxx-pxx 13 ? 2013 apacer technology inc. rev. 1.5 6. physical characteristics 6.1 dimensions unit: L tolerance: 0.2
serial ata flash drive aps1845xxxxx-pxx 14 ? 2013 apacer technology inc. rev. 1.5 6.2 write protect switch (optional) description of apacer write protect: apacer implements the virtual write scheme that all ows write commands to go through the flash controll er and data temporarily stored. the os can still funct ion normally but no data has been actually written into the flash. since the virtual write scheme runs at devic e level, it requires no software or driver installa tion and is independent from the host os. write protect switch enable disable note: dip switch 1, 3, and 4 are defined as ?reserv ed? for this model.
serial ata flash drive aps1845xxxxx-pxx 15 ? 2013 apacer technology inc. rev. 1.5 7. product ordering information 7.1 product code designations a p s 184 5 x x x x x C p x x serial ata flash drive apacer product code mo-297 form factor solution version capacities: 004g = 4gb 008g = 8gb 016g = 16gb 032g = 32gb 064g = 64gb flash type ve rsion control temperature range blank: standard w: extended temperature blank: no write protect n: write protect
serial ata flash drive aps1845xxxxx-pxx 16 ? 2013 apacer technology inc. rev. 1.5 7.2 valid combinations safd18s4 capacity standard extended temperature 4gb aps1845004g-pt aps1845004g-ptw 8gb aps1845008g-pt aps1845008g-ptw 16gb aps1845016g-pt aps1845016g-ptw 32gb aps1845032g-pc aps1845032g-pcw 64gb aps1845064g-pc aps1845064g-pcw safd18s4 with write protect capacity standard extended temperature 4gb aps1845n004g-pt aps1845n004g-ptw 8gb aps1845n008g-pt aps1845n008g-ptw 16gb aps1845n016g-pt APS1845N016G-PTW 32gb aps1845n032g-pc aps1845n032g-pcw 64gb aps1845n064g-pc aps1845n064g-pcw note: please consult with apacer sales representatives fo r availabilities.
serial ata flash drive aps1845xxxxx-pxx 17 ? 2013 apacer technology inc. rev. 1.5 revision history revision description date 0.1 preliminary release 11/17/2011 1.0 official release 12/02/2011 1.1 revised capacity specifications 1/20/2012 1.2 revised s.m.a.r.t information 03/23/2012 1.3 updated product ordering information due to fir mware upgrade 08/24/2012 1.4 added write protect option 09/27/2012 1.5 updated product ordering information due to fir mware upgrade 05/02/2013
serial ata flash drive aps1845xxxxx-pxx 18 ? 2013 apacer technology inc. rev. 1.5 global presence taiwan (headquarters) apacer technology inc. 4 th fl., 75 hsin tai wu rd., sec.1 xizhi, new taipei city taiwan 221 r.o.c. tel: +886-2-2698-2888 fax: +886-2-2698-2889 amtsales@apacer.com u.s.a. apacer memory america, inc. 386 fairview way, suite102, milpitas, ca 95035 tel: 1-408-518-8699 fax: 1-408-935-9611 sa@apacerus.com japan apacer technology corp. 5f, matsura bldg., shiba, minato-ku tokyo, 105-0014, japan tel: 81-3-5419-2668 fax: 81-3-5419-0018 jpservices@apacer.com europe apacer technology b.v. science park eindhoven 5051 5692 eb son, the netherlands tel: 31-40-267-0000 fax: 31-40-267-0000#6199 sales@apacer.nl china apacer electronic (shanghai) co., ltd 1301, no.251,xiaomuqiao road, shanghai, 200032, china tel: 86-21-5529-0222 fax: 86-21-5206-6939 sales@apacer.com.cn india apacer technologies pvt ltd, # 535, 1st floor, 8th cross, jp nagar 3rd phase, bangalore ? 560078, india tel: 91-80-4152-9061 sales_india@apacer.com

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