Transcend TS8GUSDHC10 flash memory
Contents
1. CSD Register Structure TAAC This field is fixed to OEh which indicates 1 ms The host should not use TAAC NSAC and R2W FACTOR to calculate timeout and should uses fixed timeout values for read and write operations TAAC bit position 2 0 time unit 0 1 1 10ns 2 100ns 321ys 4 10us 5 100us 621ms 7 10ms 6 3 time value 121 0 2 1 2 321 3 421 5 5 2 0 6 2 5 7 3 0 8 3 5 9 4 0 A 4 5 B 5 0 C 5 5 D 6 0 E 7 0 F 8 0 7 reserved code NSAC This field is fixed to 00h NSAC should not be used to calculate time out values TRAN_SPEED The following table defines the maximum data transfer rate per one data line TRAN_SPEED TRAN SPEED bit code 2 0 transfer rate unit 0 100kbit s 1 1Mbit s 2 10Mbit s 3 100Mbit s 4 7 reserved time value O reserved 1 1 0 2 1 2 3 1 3 4 1 5 5 2 0 6 2 5 7 3 0 8 3 5 9 4 0 A 4 5 B 5 0 C 5 5 D 6 0 E 7 0 F 8 0 reserved Transcend Information Inc 15 T Transcend microSDHC Card series High Capacity microSD Class10 Card Note that for current SD Memory Cards that field must be always 0 0110 010b 032h which is equal to 25MHz the mandatory maximum operating frequency of SD Memory Card In High Speed mode that field must be always O 1011 010b 05Ah which is equal to 50MHz And when the timing mode returns to the default by CMD6 or CMDO command its value will be 032h CCC The SD Memory Card comm2. CMD DAT referenced to CLK Transcend Information Inc 6 p Transcend microSDHC Card series High Capacity microSD Class10 Card Output Delay time during Data Transfer Mode topi 0 14 ns lt 40 pF 1 Output Delay time during Identification Mode topLy 0 50 ns _ C lt 40 pF 1 card 1 0 Hz means to stop the clock The given minimum frequency range is for cases were continues clock is required Transcend Information Inc 7 T Transcend microSDHC Card series High Capacity microSD Class10 Card Bus Timing High Speed Mode foo Vi HL the tsu tH Input Vi Von Output V OL on Shaded areas are not valid Figure 48 Timing diagram data input output referenced to clock HighSpeed Parameter Symbol Min Max Unit Remark Clock CLK All values are referred to min and max Vi Clock frequency Data Transfer Mode 0 50 MHz Ccanp lt 10 pF 1 card Clock low time two 7 nS Ccanp lt 10 pF 1 card Clock high time 7 ns Ccanp lt 10 pF 1 card Clock rise time tnu 3 ns Ccanp lt 10 pF 1 card Clock fall time trac 3 ns Ccanp lt 10 pF 1 card Inputs CMD DAT referenced to CLK Input set up time tisu 6 ns lt 10 pF 1 card Input hold time tin 2 ns Ccanp lt 10 pF 1 card Outputs CMD DAT referenced to Transce
3. READ BLK MISALIGN DSR IMP C SIZE MANT C_SIZE_EXP VDD_R_CURR_MIN SECTOR_SIZE WP_GRP_SIZE WP_GRP_ENABLE WRITE_BL_LEN FILE FORMAT GRP COPY PERM_WRITE_PROTECT TMP_WRITE_PROTECT FILE_FORMAT CRC 4 RCA Register The writable 16 bit relative card address register carries the card address that is published by the card during the card identification This address is used for the addressed host card communication after the card identification procedure The default value of the RCA register is 0x0000 The value0x0000 is reserved to set all cards into the Stand by State with CMD7 5 DSR Register Optional It can be optionally used to improve the bus performance for extended operating conditions depending on parameters like bus length transfer rate or number of cards The CSD register carries the information about the DSR register usage The default value of the DSR register is 0x404 Transcend Information Inc 19 p Transcend microSDHC Card series High Capacity microSD Class10 Card 6 SCR Register In addition to the CSD register there is another configuration register that named SD CARD Configuration Register SCR SCR provides information on SD Memory Card s special features that were configured into the given card The size of SCR register is 64 bit This register
4. Transcend Information Inc 27
5. Version 1 10 Card SD SPEC 1 SD_SPEC3 0 1 The card shall support CMD6 2 The card does not support CMD8 3 User area capacity shall be up to 2GB Essential conditions to indicate Version 2 00 Card SD SPEC 2 SD SPEC3 0 1 The card shall support CMD6 2 The card shall support CMD8 8 The card shall support CMD42 4 User area capacity shall be up to 2GB SDSC or 32GB SDHC b Speed Class shall be supported SDHC Essential conditions to indicate Version 3 00 Card SD SPEC 2 and SD SPEC3 1 1 The card shall support CMD6 2 The card shall support CMD8 8 The card shall support CMD42 4 User area capacity shall be up to 2GB SDSC or 32GB SDHO User area capacity shall be more than or equal to 32GB and up to 2TB SDXC Transcend Information Inc 2 D Transcend microSDHC Card series High Capacity microSD Class10 Card 5 Speed Class shall be supported SDHC or SDXC A card supports any of following functions shall satisfy essential conditions of Version 3 00 Card 1 Speed Class supported under the conditions defined in Ver3 00 2 UHS I supported card 3 CMD23 supported card Application Notes When checking SD SPEC version in SCR the host shall not forget that higher SD SPEC version may be specified in future It is important to keep compatibility for future version DATA STAT AFTER ERASE Defines the data status after erase whether it is 0 or 1 the status is card vendor depend
6. shall be set in the factory by the SD Memory Card manufacturer The following table describes the SCR register content Description Field Width Cell p fesen he ay dem reserved for manufacturer usage SCR STRUCTURE Version number of the related SCR structure in the SD Memory Card Physical Layer Specification SCR STRUCTURE SCR structure version SD Physical Layer Specification Version SCR version 1 0 Version 1 01 3 00 SCR Register Structure Version Transcend Information Inc 20 D Transcend microSDHC Card series High Capacity microSD Class10 Card SD SPEC Describes the SD Memory Card Physical Layer Specification version supported by this card SD SPEC Physical Layer Specification Version Number 0 Version 1 0 1 01 1 Version 1 10 Version 2 00 or Version 3 00 Refer to SD SPEC3 3 15 reserved Physical Layer Specification Version e SD SPEC3 SD SPEC SD SPEC3 Physical Layer Specification Version Number 2 o Version 2 00 Version 3 00 The card manufacturer determines SD_SPEC value by conditions indicated below All conditions shall be satisfied for each version The other combination of conditions is not allowed Essential conditions to indicate Version 1 01 Card SD_SPEC 0 and SD_SPEC3 0 1 The card does not support CMD6 2 The card does not support CMD8 3 User area capacity shall be up to 2GB Essential conditions to indicate
7. D Transcend microSDHC Card series High Capacity microSD Class10 Card Description Transcend High Capacity microSD Card series are specifically designed to meet the High Capacity High Definition Audio and Video requirement for the latest Digital Cameras DV Recorders Mobile Phones etc The new defined Speed Class enables the host to support AV applications to perform real time recording to the microSD memory card Placement 12345678 Front Pin Definition SD Mode Pin No DAT2 Data Line Bit2 2 copats Card Detect Data Line Bit3 Description Command Response Features e RoHS compliant product Operating Voltage 2 7 3 6V e Operating Temperature 25 85 C Durability 10 000 insertion removal cycles Compatible with SD Specification Ver 3 0 Comply with SD File System Specification Ver 3 0 Mechanical Write Protection Switch with microSD adapter Supports Speed Class Specification Class 10 Supports Copy Protection for Recorded Media CPRM for SD Audio e Form Factor 11mm x 15mm x 1mm SPI Mode Chip Select Data In 3 CMD PP 4 S Supply voltage bo o Supply voltage ground Data Line Bit0 S Power Supply 1 1 Supply voltage Supply voltage ground O Output PP Push Pull Transcend Information Inc T Transcend microSDHC Card series High Capacity microSD Class10 Card Architecture DAT
8. PY Defines if the contents is original 0 or has been copied 1 The COPY bit for OTP and MTP devices sold to end consumers is set to 1 which identifies the card contents as a copy The COPY bit is an one time programmable bit PERM WRITE PROTECT Permanently protects the whole card content against overwriting or erasing all write and erase commands for this card are permanently disabled The default value is 0 i e not permanently write protected TMP WRITE PROTECT Temporarily protects the whole card content from being overwritten or erased all write and erase commands for this card are temporarily disabled This bit can be set and reset The default value is 0 i e not write protected FILE FORMAT This field is set to O Host should not use this field CRC The CRC field carries the check sum for the CSD contents The checksum has to be recalculated by the host for any CSD modification The default corresponds to the initial CSD contents The following table lists the correspondence between the CSD entries and the command classes A entry indicates that the CSD field affects the commands of the related command class Command classes CSD Field CSD STRUCTURE TAAC NSAC TRAN SPEED Transcend Information Inc 18 T Transcend microSDHC Card series High Capacity microSD Class10 Card Command classes READ BL LEN WRITE BLK MISALIGN
9. TAIL A Mechanical Description Top View Transcend Information Inc 24 T Transcend microSDHC Card series High Capacity microSD Class10 Card i 8 A5 r B B8 ES 810 Rig V BI 45 AB A7 Mechanical Description Bottom View Transcend Information Inc 25 T Transcend microSDHC Card series High Capacity microSD Class10 Card KEEP OUT AREA Mechanical Description Keep Out Area Transcend Information Inc 26 T Transcend microSDHC Card series High Capacity microSD Class10 Card COMMON DIMENSIONS Notes SYMBOL 10 90 1100 11 10 1 DIMENSIONING AND TOLERANCING PER ASME Y14 5M 1894 eo T Jp 2 DIMENSIONS ARE IN MILLIMETERS tu eo e gt w e COPLANARITY 1 ADDITIVE TO C1 MAX THICKNESS nico Ojon e oj jo w o c on e ce e mio C D o en b e ce cra o e D 1 00 0 20 P 52 8 85 86 87 810 ma 81 elio e 5 ce ce 0 8 R5 070 080 RO 070 0 80 0900 R7 28050 30 00 3050 R10 020 f 20 Rir 0 10 020 030 Ris 020 0 40 0601 3 819 005 020 ole En P te mJ hole Dj er tn o e elo e microSD package Dimensions
10. Z CHD CDIDATS CRT jai Card Interface controller c ul i c Li gt c D 1122544 12 5 Men l 1212 Meme t 41 1414 Transcend Information Inc 2 p Transcend microSDHC Card series Bus Operating Conditions High Capacity microSD Class10 Card General Parameter Symbol Min Max Unit Remark Peak voltage on all lines 0 3 Vpp 0 3 V Inputs Input Leakage Current 10 10 All Outputs Output Leakage Current 10 10 Power Supply Voltage Parameter Symbol Min Max Unit Remark Supply voltage Vpp 2 7 3 6 V Output High Voltage Vou 0 75 Vpp V 1004 Min Output Low Voltage VoL 0 125 Vpp V loi 21000A Q Vpp Min Input High Voltage Vin 0 625 Vbo Vpp 0 3 V Input Low Voltage Vit Vss 0 3 0 25 Vpp V Power up time 250 ms From Ov to Vpp Min Current Consumption The current consumption is measured by averaging over 1 second Before first command Maximum 15 mA During initialization Maximum 100 mA Operation in Default Mode Maximum 100 mA Operation in High Speed Mode Maximum 200 mA Operation with other functions Maximum 500 mA Bus Signal Line Load The total capacitance C the CLK line of the SD Memory Card bus is the sum of the bus master capacitance the bus capacitance itself and the capacitance Ccarp of each car
11. and set is divided into subsets command classes The card command class register CCC defines which command classes are supported by this A value of 1 in a CCC bit means that the corresponding command class is supported CCC bit Supported card command class 0 class 0 11 class 11 READ BL LEN This field is fixed to 9h which indicates READ BL LEN 512 Byte READ BL PARTIAL This field is fixed to 0 which indicates partial block read is inhibited and only unit of block access is allowed WRITE BLK MISALIGN This field is fixed to 0 which indicates write access crossing physical block boundaries is always disabled in High Capacity SD Memory Card READ BLK MISALIGN This field is fixed to 0 which indicates read access crossing physical block boundaries is always disabled in High Capacity SD Memory Card DSR IMP Defines if the configurable driver stage is integrated on the card If set a driver stage register DSR must be implemented also Transcend Information Inc 16 T Transcend microSDHC Card series High Capacity microSD Class10 Card DSR IMP DSR type 0 no DSR implemented 1 DSR implemented C SIZE This field is expanded to 22 bits and can indicate up to 2 TBytes It is the same as the maximum memory space specified by a 32 bit block address This parameter is used to calculate the user data area capacity in the SD memory card not include the protected
12. area The user data area capacity is calculated from C SIZE as follows memory capacity C_SIZE 1 512K byte As the maximum capacity of the Physical Layer Specification Version 2 00 is 32 GB the upper 6 bits of this field shall be set to 0 ERASE BLK EN This field is fixed to 1 which means the host can erase one or multiple units of 512 bytes SECTOR SIZE This field is fixed to 7Fh which indicates 64 KBytes This value does not relate to erase operation Version 2 00 cards indicates memory boundary by AU size and this field should not be used WP GRP SIZE This field is fixed to 00h The High Capacity SD Memory Card does not support write protected groups WP ENABLE This field is fixed to 0 The High Capacity SD Memory Card does not support write protected groups R2W FACTOR This field is fixed to 2h which indicates 4 multiples Write timeout can be calculated by multiplying the read access time R2W FACTOR However the host should not use this factor and should use 250 ms for write timeout WRITE BL LEN This field is fixed to 9h which indicates WRITE BL LEN 512 Byte WRITE BL PARTIAL This field is fixed to 0 which indicates partial block read is inhibited and only unit of block access is allowed FILE FORMAT GRP Transcend Information Inc 17 T Transcend microSDHC Card series High Capacity microSD Class10 Card This field is set to 0 Host should not use this field CO
13. ated to the supply voltage Output Input High High Level Level undefinded Input Low Output Level Low Level t Vss To meet the requirements of the JEDEC specification JESD8 1A and JESD8 7 the card input and output voltages shall be within the following specified ranges for any Vpp of the allowed voltage range Parameter Symbol Min Max Unit Remark Output HIGH voltage 0 75 Vpp V lou 100 uA Vpp min Output LOW voltage VoL 0 125 Vpp V lo 100 pA Vpp min Input HIGH voltage Viu 0 625 Vpp Vpp 0 3 V Input LOW voltage Vit Vss 0 3 0 25 Vpp V Transcend Information Inc 5 D Transcend microSDHC Card series High Capacity microSD Class10 Card Bus Timing Output VoL Shaded areas are not valid Parameter Symbol Min Max Unit Remark Clock CLK All values are referred to min and max Vi Clock frequency Data Transfer Mode fep 0 25 MHz Ccanp lt 10 pF 1 card Clock frequency Identification Mode fop 04 100 400 KHz Ccanp lt 10 pF 1 card Clock low time tw 10 nS Ccanp lt 10 pF 1 card Clock high time twn 10 ns Ccanp lt 10 pF 1 card Clock rise time tuu 10 ns lt 10 pF 1 card Clock fall time tru 10 ns Ccanp lt 10 pF 1 card Inputs CMD DAT referenced to CLK Input set up time tisu 5 ns Ccanp lt 10 pF 1 card Input hold time tin 5 ns Ccanp lt 10 pF 1 card Outputs
14. content specific information while the RCA and DSR registers are configuration registers storing actual configuration parameters 1 OCR register The 32 bit operation conditions register stores the VDD voltage profile of the card Additionally this register includes status information bits One status bit is set if the card power up procedure has been finished This register includes another status bit indicating the card capacity status after set power up status bit The OCR register shall be implemented by the cards The 32 bit operation conditions register stores the VDD voltage profile of the card Bit 7 of OCR is newly defined for Dual Voltage Card and set to 0 in default If a Dual Voltage Card does not receive CMD8 OCR bit 7 in the response indicates 0 and the Dual Voltage Card which received CMD8 sets this bit to 1 Additionally this register includes 2 more status information bits Bit 31 Card power up status bit this status bit is set if the card power up procedure has been finished Bit 30 Card capacity status bit this status bit is set to 1 if card is High Capacity SD Memory Card 0 indicates that the card is Standard Capacity SD Memory Card The Card Capacity status bit is valid after the card power up procedure is completed and the card power up status bit is set to 1 The Host shall read this status bit to identify a Standard or High Capacity SD Memory Card The OCR register shall be implemented by the cards OCR bit ositio
15. d i device size C SIZE erase single block enable ERASE BLK EN erase sector size SECTOR SIZE rite protect group size WP GRP SIZE rite protect group enable WP GRP ENABLE rite speed factor R2W FACTOR ax write data block length WRITE BL LEN 4 b D 0000b partial blocks for write allowed WRITE BL PARTIAL eserved 0 FILE FORMAT GRP 1 1515 opy flag OTP COPY o k 1414 permanent write protection PERM WRITE PROTECT 1 13 13 MP WRITE PROTECT k RW 1212 006 00b eserved 2 9 8 CRC RC Rt pot used always bo 1 9 HH pf F 00 The CSD Register Fields CSD Version 2 0 The following sections describe the CSD fields and the relevant data types If not explicitly defined otherwise all bit strings are interpreted as binary coded numbers starting with the left bit first CSD STRUCTURE Field structures of the CSD register are different depend on the Physical Specification Version and Card Capacity The CSD STRUCTURE field in the CSD register indicates its structure version The following table shows the version number of the related CSD structure Transcend Information Inc 14 T Transcend microSDHC Card series High Capacity microSD Class10 Card CSD STRUCTURE CSD structure version Card Capacity CSD Version 1 0 Standard Capacit CSD Version 2 0 High Capacity and Extended Capacit 23 ____ ooo
16. d connected to this line C N Ccarp Where is the number of connected cards Parameter Symbol Min Max Unit Remark Pull up resistance 10 100 kQ To prevent bus floating Bus signal line capacitance CL 40 pF 1 card shall not exceed 30 pF Transcend Information Inc D Transcend microSDHC Card series High Capacity microSD Class10 Card Single card capacitance 10 Maximum signal line inductance 16 nH fpp lt 20 MHz Pull up resistance inside card pin1 Roat3 10 90 May be used for card detection Note that the total capacitance of CMD and DAT lines will be consist of Chost Casus and one Cearn only because they are connected separately to the SD Memory Card host Host should consider total bus capacitance for each signal as the sum of Chost and Ccarp these parameters are defined by per signal The host can determine and so that total bus capacitance is less than the card estimated capacitance load C 240 pF The SD Memory Card guarantees its bus timing when total bus capacitance is less than maximum value of C 40 pF Transcend Information Inc p Transcend microSDHC Card series High Capacity microSD Class10 Card Bus Signal Levels As the bus can be supplied with a variable supply voltage all signal levels are rel
17. ent e SD SECURITY This field indicates CPRM Security Specification Version for each capacity card The definition of Protected Area is different in each capacity card SD SECURITY CPRM Security Version No Security Not Used SDSC Card Security Version 1 01 Card Security Version 2 00 SDXC Card Security Version 3 xx Reserved CPRM Security Version The basic rule of setting this field SDSC Card sets this field to 2 Version 1 01 SDHC Card sets this field to 3 Version 2 00 SDXC Card sets this field to 4 Version 3 xx Note that it is mandatory for a regular writable SD Memory Card to support Security Protocol For ROM Read Only and OTP One Time Programmable types of the SD Memory Card the security feature is optional Transcend Information Inc 22 p Transcend microSDHC Card series High Capacity microSD Class10 Card e SD BUS WIDTHS Describes all the DAT bus widths that are supported by this card SD BUS WIDTHS Supported Bus Widths bit DATO 4 bi DATO SD Memory Card Supported Bus Widths Since SD Memory Card shall support at least the two bus modes 1bit or 4bit width then any SD Card shall set at least bits 0 and 2 SD BUS WIDTHz 0101 Transcend Information Inc 23 T Transcend microSDHC Card series High Capacity microSD Class10 Card Mechanical Dimension DETAIL A c3 RIO 83 Be VIEW A B1 CONTACT SURFACE DE
18. n OCR Fields Definition reserved 5 reserved j a GEREEXSE C C re _ 7 Reserved for Low Voltage Range 8 QJreeved 9 10 reserved i O resevd i O 12 reserved eserves ff Sd a 27 28 a7 2930 O O O 18 13403 19 83 132 20 3233 2 8 2 9 30 Card Capacity Status CCS 314 Card power up status bit busy OCR Register Definition Transcend Information Inc 11 p 3 1 1 1 4 5 6 7 9 T 12 13 14 15 17 19 20 2 22 23 30 3 T Transcend microSDHC Card series High Capacity microSD Class10 Card 1 This bit is valid only when the card power up status bit is set 2 This bit is set to LOW if the card has not finished the power up routine A voltage range is not supported if the corresponding bit value is set to LOW As long as the card is busy the corresponding bit 31 is set to LOW 2 CID Register The Card IDentification CID register is 128 bits wide It contains the card identification information used during the card identification phase Every individual flash card shall have a unique identification number The structure of the CID register is defined in the following paragraphs Name Field Width CID slice Manufacturer ID MID 8 127 120 OEM Application ID OID 16 119 104 Product name PNM 40 103 64 P
19. nd Information Inc 8 p Transcend microSDHC Card series High Capacity microSD Class10 Card Output Delay time during Data Transfer Mode 14 ns lt 40 pF 1 card Output Hold time ton 2 5 ns Ci lt 40 pF 1 card Total System capacitance for each line C 40 pF 1 card 1 In order to satisfy severe timing host shall drive only one card Transcend Information Inc 9 p Transcend microSDHC Card series High Capacity microSD Class10 Card Reliability and Durability Temperature Operation 25 C 85 Storage 40 168h 85 500h Junction temperature max 95 C Moisture and corrosion Operation 25 9596 rel humidity Storage 40 9396 rel hum 500h Salt Water Spray 3 NaCl 35C 24h acc MIL STD Method 1009 Durability 10 000 mating cycles Bending 10N Torque 0 15N m or 2 5 deg Drop test 1 5m free fall Visual inspection Shape and form No warp page no mold skin complete form no cavities surface smoothness 0 1 mm cm within contour no cracks no pollution fat oil dust etc Transcend Information Inc T Transcend microSDHC Card series High Capacity microSD Class10 Card Register Information Within the card interface six registers are defined OCR CID CSD RCA DSR and SCR These can be accessed only by corresponding commands The OCR CID CSD and SCR registers carry the card
20. nt nibble As an example the PRV binary value field for product revision 6 2 will be 0110 0010 PSN The Serial Number is 32 bits of binary number MDT The manufacturing date composed of two hexadecimal digits one is 8 bit representing the year y and the other is four bits representing the month m The field 11 8 is the month code 1 January The y field 19 12 is the year code 0 2000 As an example the binary value of the Date field for production date April 2001 will be 00000001 0100 CRC CRC7 checksum 7 bits 3 CSD Register The following sections describe the CSD fields and the relevant data types for the High Capacity SD Memory Card CSD Version 2 0 is applied to only the High Capacity SD Memory Card The field name in parenthesis is set to fixed value and indicates that the host is not necessary to refer these fields The fixed values enables host which refers to these fields to keep compatibility to CSD Version 1 0 The Cell Type field is coded as follows R readable W 1 writable once W multiple writable Transcend Information Inc 13 T Transcend microSDHC Card series High Capacity microSD Class10 Card data read access time in CL ycles NSAC 100 ax data transfer rate ard command classes CCC 2 ax read data block length partial blocks for read allowed READ BL PARTIAL f1 rite block misalignment ead block misalignment READ BLK MISALIGN 1 DSR implemente
21. roduct revision PRV 8 63 56 Product serial number PSN 32 55 24 reserved 4 23 20 Manufacturing date MDT 12 19 8 CRC7 checksum CRC 7 7 1 not used always 1 1 0 0 MID An 8 bit binary number that identifies the card manufacturer The MID number is controlled defined and allocated to a SD Memory Card manufacturer by the SD 3C LLC This procedure is established to ensure uniqueness of the CID register OID A 2 character ASCII string that identifies the card OEM and or the card contents when used as a distribution media either on ROM or FLASH cards The OID number is controlled defined and allocated to a SD Memory Card manufacturer by the SD 3C LLC This procedure is established to ensure uniqueness of the CID register Note SD 3C LLC licenses companies that wish to manufacture and or sell SD Memory Cards including but not limited to flash memory ROM OTP RAM and SDIO Combo Cards 0 3 LLC is a limited liability company established by Matsushita Electric Industrial Co Ltd SanDisk Corporation and Toshiba Corporation PNM The product name is a string 5 ASCII characters long PRV The product revision is composed of two Binary Coded Decimal BCD digits four bits each representing an Transcend Information Inc 12 D Transcend microSDHC Card series High Capacity microSD Class10 Card revision number The n is the most significant nibble and is the least significa
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