1、JEDEC SOLID STATE TECHNOLOGY ASSOCIATIONJEDECSTANDARDJESD84-C01June 2007MultiMediaCard (MMC) Card Mechanical StandardNOTICEJEDEC standards and publications contain material that has been prepared, reviewed, and approved through the JEDEC Board of Directors level and subsequently reviewed and approve
2、d by the JEDEC legal counsel.JEDEC standards and publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with
3、 minimum delay the proper product for use by those other than JEDEC members, whether the standard is to be used either domestically or internationally.JEDEC standards and publications are adopted without regard to whether or not their adoption may involve patents or articles, materials, or processes
4、. By such action JEDEC does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the JEDEC standards or publications.The information included in JEDEC standards and publications represents a sound approach to product specification and applicati
5、on, principally from the solid state device manufacturer viewpoint. Within the JEDEC organization there are procedures whereby a JEDEC standard or publication may be further processed and ultimately become an ANSI standard.No claims to be in conformance with this standard may be made unless all requ
6、irements stated in the standard are met.Inquiries, comments, and suggestions relative to the content of this JEDEC standard or publication should be addressed to JEDEC at the address below, or call (703) 907-7559 or www.jedec.orgPublished byJEDEC Solid State Technology Association 20072500 Wilson Bo
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8、rds and Publications online athttp:/www.jedec.org/Catalog/catalog.cfmPrinted in the U.S.A. All rights reservedPLEASE!DONT VIOLATE THE LAW!This document is copyrighted by JEDEC and may not bereproduced without permission.Organizations may obtain permission to reproduce a limited number of copies thro
9、ugh entering into a license agreement. For information, contact:JEDEC Solid State Technology Association2500 Wilson BoulevardArlington, Virginia 22201-3834or call (703) 907-7559JEDEC Standard No. JESD84-C01-i-MultiMediaCard (MMC) Card Mechanical StandardCONTENTSPageForeword . . . . . . . . . . . . .
10、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii1 Scope. . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . . . . . . . . . . . . . . 14 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Product standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . 25.1 MMC interface pin configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.2 Form factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.3 Mechanical description. . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.4 Card package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.4.1 External signal contacts (ESC) . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.4.2 Design and format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.4.3 Reliability and durability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、 . . . . . . . . . . . 45.4.4 Quality assurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5 System: Card and connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5.1 “Hot” Car
17、d Insertion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5.2 Inverse Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.5.3 Card Orientation . . . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 References other applicable JEDEC standards and publications . . . . . . . . . . . . . . . . . . 6Annex A: Application Notes .7A.1 Connector 7A.1.1 General Information 7A.1.2 Card Insertion and Removal .7A.1
19、.3 Characteristics .8JEDEC Standard No. JESD84-C01-ii-JEDEC Standard No. JESD84-C01-iii-MultiMediaCard (MMC) Card Mechanical StandardFIGURESPageFigure 1 MMC form factors, bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 2 Inverse insertion . . . . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure A.1 MultiMediaCard connector modified for hot insertion. . . . . . . . . . . . . . . . . . . . . . 8JEDEC Standard No. JESD84-C01-iv-JEDEC Standard No. JESD84-C01-v-MultiMediaCard (MMC) Card Mechanical S
21、tandardTABLESPageTable 1 MMC pin interface configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Table 2 Design and format features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 3 Reliability and durability requireme
22、nts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 4 Referenced documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Table A.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . 8Table A.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Table A.3 Climatic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9JEDEC Standard No. JESD84-
24、C01-vi-JEDEC Standard No. JESD84-C01-vii-ForewordThe MultiMediaCardMechanical Standard has been prepared by the MultiMediaCard Association, here-after referred to as MMCA. The MMCA exists to promote adoption of a global standard for a compact, robust, affordable storage and retrieval device, the Mul
25、tiMediaCard. Consumers worldwide will benefit from this standard, allowing them to carry with them, information and entertainment that fits their needs, wherever they are, whenever they wish.JEDEC has taken the basic MMCA specification and adopted it for embedded applications, calling it “eMMC.” In
26、addition to the packaging differences, eMMC devices use a reduced-voltage interface. These specifications are detailed in the JEDEC JC-64 “JEDEC MMC Electrical Interface Specification.”The purpose of the specification is the definition of the MMC, its environment and handling. It provides guidelines
27、 for systems designers. The specification also defines a tool box (a set of macro functions and algorithms) that contributes to reducing design-in costs.This standard submission is intended to entirely supplant previously submitted MMC mechanical specifi-cations.IntroductionThe MultiMediaCard is an
28、universal low-cost data storage and communication media. It is designed to cover a wide area of applications as smart phones, cameras, organizers, PDAs, digital recorders, MP3 play-ers, pagers, electronic toys, etc. Targeted features are high mobility and high performance at a low cost price. These
29、features include low power consumption and high data throughput at the memory card inter-face.MultiMediaCard communication is based on an advanced 13-pin bus. The communication protocol is defined as a part of this standard and referred to as the MultiMediaCard mode. To ensure compatibility with exi
30、sting controllers, the cards may offer, in addition to the MultiMediaCard mode, an alternate com-munication protocol which is based on the SPI standard.To provide for the forecasted migration of CMOS power (VDD) requirements and for compatibility and integrity of MultiMediaCard systems, two types of
31、 MultiMediaCards are defined in this standard specifica-tion, which differ only in the valid range of system VDD. These two card types are referred to as High Voltage MultiMediaCard and Dual Voltage MultiMediaCard.JEDEC Standard No. JESD84-C01-viii-JEDEC Standard No. JESD84-C01Page 1MultiMediaCard (
32、MMC) Card Mechanical Standard(From JEDEC Board Ballot JCB-YY-XXX, formulated under the cognizance of the JC-XX Committee on .)1 ScopeThis standard describes the mechanical and electromechanical features of the MultiMediaCard, as well as the minimum requirements of the MultiMediaCard connector. All t
33、echnical drafts follow DIN ISO stan-dard.2 Normative referenceThe following normative documents contain provisions that, through reference in this text, constitute pro-visions of this standard. For dated references, subsequent amendments to, or revisions of, any of these pub-lications do not apply.
34、However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.3 Terms and definitionsFor the
35、 purposes of this standard, the following terms and definitions apply:MMC: MultiMediaCardESC: External signal contacts4 General descriptionThe MultiMediaCard Card Mechanical Specification describes the mechanical attributes of the MMC.This document is presented in several sections. The MultiMediaCar
36、d Product Standard is described in Sec-tion 5.References to other applicable JEDEC standards and publications are provided in Section 6 on page 6.Annex A on page 7 contains additional information that is informative in nature and not considered a con-stituent part of this specification. These applic
37、ation notes contain useful tips for circuit and system design-ers, helping simplify the design process.NOTE: As used in this document, “shall” or “will” denotes a mandatory provision of the standard. “Should” denotes a provision that is recommended but not mandatory. “May” denotes a feature whose pr
38、esence does not preclude compliance, that may or may not be present at the option of the implementor.JEDEC Standard No. JESD84-C01Page 25 Product standardThis product standard establishes the MMC interface pin configuration, form factors, mechanical descrip-tion, card package characteristics, signal
39、 contacts, and its design and format. It also establishes reliability, durability, and quality-assurance standards.The system card and connections are mentioned relative to “hot” card insertion, inverse insertion, and card orientation; full discussion of these topics is not provided, as this would e
40、xceed the scope of this document.5.1 MMC interface pin configurationThe card is connected directly to the signals of the MultiMediaCard bus. See Table 1 for card contact defi-nitions.See applicable JEDEC and MMCA standards for electrical specifications. 5.2 Form factorsThe MMC has two possible form
41、factors. The normal-size form factor is 24mm x 32mm x 1.4mm. The reduced-size form factor is 24mm x 18mm x 1.4mm. To use a reduced-size MMC in a normal-size MMC socket, a special adaptor has to be used. Figure 1 shows the two form factors. The mechanical and electri-cal interface is identical in bot
42、h form factors.Table 1 MMC pin interface configuration Pin No. Name Type1Description1 DAT3 I/O/PP Data2 CMD I/O/PP/OD Command/Response3 VSSIS Supply voltage ground4 VDDS Supply voltage5 CLK I Clock6 VSS2S Supply voltage ground7 DAT02I/O/PP Data8 DAT1 I/O/PP Data9 DAT2 I/O/PP Data10 DAT4 I/O/PP Data1
43、1 DAT5 I/O/PP Data12 DAT6 I/O/PP Data13 DAT7 I/O/PP DataNOTE 1 S: power supply; I: input; O: output; PP: push-pull; OD: open-drain; NC: Not connected (or logical high)NOTE 2 The DAT0-DAT7 lines for read-only cards are output onlyJEDEC Standard No. JESD84-C01Page 3Figure 1 MMC form factors, bottom vi
44、ew5.3 Mechanical descriptionThe functions of the card package are: Protecting the chip(s) Easy handling for the end user Reliable electrical interconnection Bearing textual information and image Appealing appearanceThe functions of the connector are: Attaching and fixing the card Electrical intercon
45、nection of the card to the system board Optional: switch on/off power supply Protection against card inverse insertion5.4 Card packageEvery card package shall have the characteristics described in the following sections.5.4.1 External signal contacts (ESC)Refer to JEDEC MMC outline drawings MO-277 a
46、nd MO-278.5.4.2 Design and formatDimensions of a normal-size MultiMediaCard (MMCplus): Refer to MO-277.Dimensions of a reduced-size MultiMediaCard (MMCmobile): Refer to MO-278.123 456791011 12 13 8123 456791011 12 13 8RS-MMCRS-MMC AdaptorJEDEC Standard No. JESD84-C01Page 45.4.3 Reliability and durab
47、ility Table 2 Design and format features Item DescriptionNumber of ESC 13Distance from front edge C1, C2, C5, C6, C7: 1.6mm max.ESC grid 2.5mmContact dimensions C1, C2, C5, C6: 1.3mm x 3.7mmC3: 1.5 mm x 4.0mmC4: 1.7mm x 4.0mmC7: 1.2mm x 3.7mmC8: 1.2/1.625mm x 9.0mmC9: 1.3mm x 6.7mmC10C13: 1.3mm x 3.
48、6mmLocation of Via holes (on the contacts)Not allowed on a 0.5mm stripe centered along the center line of the contact pad.Electrical resistance 30 mOhm (worst case: 100 mOhm)Micro interrupts 10000Contact force 0.20.6 NTotal pulling force Min.2 N DIN IEC 512 part 7Total insertion force Max. 40 N DIN
49、IEC 512 part 7Vibration and High FrequencyMechanical frequency range 102000 Hz DIN IEC 512 part 2 and 4Acceleration 2gShockAcceleration 5gDAT3CMDVSSVDDCLKVSS2DAT012345671.00 0.051011912138DAT4DAT5DAT2DAT6DAT7DAT11.00 0.05MultiMediaCardJEDEC Standard No. JESD84-C01Page 9Table A.2 Electrical characteristicsDIN IEC 512 ValueContact resistance 100 mOhmCurrent-carrying capacity at 25C 0.5AInsulation resistance 1000 MOhm, MOhm after testOperating voltage 3.3VTesting voltage 500VOperating current 100mA maxTable A.3 Climatic characteristicsDIN IEC
