MicroUSB Specification Specification, Revision History Revis
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Universal Serial Micro-USB Cables Connectors Specification
MicroUSB Specification Specification,
Revision History
Revision 0.8b 1.0RC 1.01RC 1.02RC Issue Date 1/30/2006 3/24/2006 4/19/2006 4/26/2006 6/7/2006 8/2/2006 11/10/2006 12/10/2006 Revisions sections Added revised Micro-USB drawings Rev.0.8 Editorial changes additions Fahllund (Nokia) Corrections version (based comments from contributors) Corrections based comments from 0.8b version Added lubricant recommendation, LLRC delta change specified Editorial changes addition based Oct-06 USB-IF CCWG meeting. Shell material thickness tolerances changed that material 0.25 edited three pictures (Figure 4-10, 4-11 412). pictures edited (Figure 4-9). height 2.8mm MAX. R0.25mm R0.30mm MAX. approval Approved Cosmetic edits publication Editorial corrections additions contributor list. Reinserted shell plug material requirements section 6.10. Clarified wording Plating Recommendations. Comment
1.03RC 1.0RC3 1.01
12/11/2006 12/19/2006 1/12/2007 1/22/2007 4/4/2007
Copyright 2007 Implementers Forum, Inc. (USB-IF). rights reserved. LICENSE HEREBY GRANTED REPRODUCE THIS SPECIFICATION INTERNAL ONLY. OTHER LICENSE, EXPRESS IMPLIED, ESTOPPEL OTHERWISE, GRANTED INTENDED HEREBY. USB-IF AUTHORS THIS SPECIFICATION EXPRESSLY DISCLAIM LIABILITY INFRINGEMENT INTELLECTUAL PROPERTY RIGHTS, RELATING IMPLEMENTATION INFORMATION THIS SPECIFICATION. USB-IF AUTHORS THIS SPECIFICATION ALSO WARRANT REPRESENT THATSUCH IMPLEMENTATION(S) WILL INFRINGE INTELLECTUAL PROPERTY RIGHTS OTHERS. THIS SPECIFICATION PROVIDED WITH WARRANTIES, EXPRESS IMPLIED, STATUTORY OTHERWISE. WARRANTIES EXPRESSLY DISCLAIMED. WARRANTY MERCHANTABILITY, WARRANTY NON-INFRINGEMENT, WARRANTY FITNESS PARTICULAR PURPOSE, NOWARRANTY ARISING PROPOSAL, SPECIFICATION, SAMPLE. EVENT WILL USB-IF USB-IF MEMBERS LIABLE ANOTHER COST PROCURING SUBSTITUTE GOODS SERVICES, LOST PROFITS, LOSS USE, LOSS DATA INCIDENTAL, CONSEQUENTIAL, INDIRECT, ORSPECIAL DAMAGES, WHETHER UNDER CONTRACT, TORT, WARRANTY, OTHERWISE, ARISING THIS SPECIFICATION, WHETHER SUCHPARTY ADVANCE NOTICE POSSIBILITY SUCH DAMAGES.
product names trademarks, registered trademarks, service marks their respective owners.
MicroUSB Specification Specification,
Contributors
Mark Rodda, (editor) Motorola Fahllund, (editor) Nokia Koser, (CCWG Chairman), Foxconn Glen Chandler, Advanced-Connectek (Acon) Charles Wang, Advanced-Connectek (Acon) Toshinori Sasaki, Across Techno Minoru Ohara, Allion Brad Brown, Christopher Mattson, Marcus Darrington, Jaremy Flake, Technology George Olear, Contech Research Ting, Elka Sophia Liu, Bill Northey, Tsuneki Watanabe, Foxconn Zhao, Foxconn David Foxconn Jong Tseng, Foxconn Jack Foxlink Chang, Foxlink Sathid Inthon, Fujikura Toshi Mimura, Fujijura Alan Berkema, Hewlett-Packard Karl Kwiat, Hirose Shinya Tono, Hirose Kazu Ichikawa, Hirose Ryozo Koyama, Hirose Yousuke Takeuchi, Hirose Tsuyoshi Kitagawa, Hosiden Eilers, Hosiden Kazuhiro Saito, Muir, Mark Saubert, Yasuhira Miya, Takahiro Diguchi, Yoichi Nakazawa, Kevin Fang, Longwell Electronics Morgan Jair, Main Super Kawaguchi, Matsushita Electric Works Ward, Matsushita Electric Works Satoshi Yamamoto, Matsushita Electric Works Yasuhiko Shinohara, Mitsumi Atsushi Nishio, Mitsumi Hitoshi Kawamura, Mitsumi Scott Sommers, Molex Kevin Delaney, Molex Kieran Wright, Molex Padraig McDaid, Molex Mikko Poikselka, Molex Liu, Newnex Technology Corp. Richard Petrie, Nokia Silvennoinen, Nokia Panu Ylihaavisto, Nokia Arthur Zarnowitz, Palm Douglas Riemer, Eric Yagi, Abid Hussain, Summit Microelectronics Osada, Tyco Masaru Ueno, Tyco Yoshikazu Hirata, Tyco Beeman, Implementers Forum Mark Paxson, Implementers Forum
MicroUSB Specification Specification,
Table Contents
Introduction.6 General.6 Objective Specification Intended Audience/Scope Related Documents.6 Acronyms Terms.7 Significant Features Specification Compliance On-The-Go Device Connectors Compliant Cable Assemblies Plug Overmolds Cables Connectors Introduction.10 Micro-Connector Mating Color Coding.11 Device, Cable Adapter Delays Compliant Usage Connectors Cables 4.5.1 Cables.12 4.5.2 Overmolds.12 4.5.3 Mechanical Interfaces.12 4.5.4 Surface mount standard version drawings 4.5.5 DIP-type Midmount-type receptacles 4.5.6 Connector Keying 4.5.7 Right Angle Plugs 4.5.8 Adapters.13 Drawings.13 Electrical Compliance Requirements Data Rates Beyond (480Mb/s ->).33 Level Contact Resistance Contact Current Rating.33 5.3.1 Signal Contacts Only 4).33 5.3.2 With Power Applied Contacts 5).33 Mechanical Compliance Requirements.34 Operating Temperature Range 6.1.1 Option 6.1.2 Option Insertion Force.34 Extraction Force Plating.34 6.4.1 Option 6.4.2 Option Solderability Peel Strength (Reference Only) Wrenching Strength (Reference Only) Lead Co-Planarity.35 RoHS Compliance 6.10 Shell Latch Materials.36
MicroUSB Specification Specification,
Figures
Figure Micro-A Micro-B Cable Figure Standard-A Micro-B Cable Figure Micro-A Captive Cable.16 Figure Micro-A Plug Overmold, Straight.17 Figure Micro-B Plug Overmold, Straight.18 Figure Micro-A Plug Interface Figure Micro-B Plug Interface Figure Micro-A/B Plug Interface (Cut-section).21 Figure Micro-AB receptacle interface Figure 4-10 Micro-B receptacle interface.23 Figure 4-11 Micro-AB Receptacle Design Figure4-12 Micro-B Receptacle Design.25 Figure 4-13 Micro-A Plug Blockage Figure 4-14 Micro-B Plug Blockage Figure 4-15 Micro-A Plug, Side Right Angle Figure 4-16 Micro-A Plug, Down Right Angle Figure 4-17 Micro-B Plug, Side Right Angle Figure 4-18 Micro-B Plug, Down Right Angle Figure 4-19 Adapter, Standard-A receptacle Micro-A plug.32
Tables
Table 4-1. Table 4-2. Table 4-3. Table 4-4. Table 4-5. Plugs Accepted Receptacles.10 Micro-A Plug Assignments Color Coding Plugs Receptacles Maximum Delay Micro-Connector Cable Maximum Delay Standard Connector Cable.11
MicroUSB Specification Specification,
Introduction
General
become popular interface exchanging data between cell phone portable devices. Many these devices have become small impossible standard components defined specification. addition durability requirements Cell Phone Portable Devices market exceed specifications current interconnects. Since Cell Phones other small Portable Devices largest market potential USB, this specification addressing this very large market while meeting requirements electrical performance within specification.
Objective Specification
purpose this document define requirements features Micro-USB connector that will meet current future needs Cell Phone Portable Devices markets, while conforming specification performance, physical size shape Micro-USB interconnect. This stand-alone document. aspects that specifically changed this specification governed Specification On-The-Go Supplement.
Intended Audience/Scope
Cell phone Portable Devices have become thin that current Mini-USB does well within constraints future designs. Additional requirements more rugged connector that will have durability past 10,000 cycles still meet specification mechanical electrical performance also consideration. Mini-USB could modified remain backward compatible existing connector defined specification.
Related Documents
Supplement
MicroUSB Specification Specification,
Acronyms Terms
This chapter lists defines terms abbreviations used throughout this specification. A-Device device with Type-A plug inserted into receptacle. A-device supplies power VBUS host start session. Adevice On-The-Go, relinquish role host On-The-Go B-device under certain conditions, generic term referring software that running device that control behavior actions port(s) device. device with Type-B plug inserted into receptacle. B-device peripheral start session. B-device OTG, granted role host from A-device. connector with contact shield solder tails that soldered through printed circuit board Full Speed (max 12Mb/s) (480Mb/s Gb/s) High Speed (max Mb/s) physical entity that attached cable acting role host defined Specification, Revision 2.0. This entity initiates data transactions provides periodic Start Frames. Host Negotiation Protocol Identification. Denotes Micro connectors that used differentiate Micro-A plug from Micro-B plug. Speed (max Mb/s) connector that mounted cut-out printed circuit board between bottom surfaces. On-The-Go device with host peripheral capabilities physical entity that attached cable currently operating "device" defined Specification, Revision 2.0. Peripheral responds level requests from Host. Printed circuit board Universal Serial Implementers Forum
Application B-Device
DIP-type Higher than Host
Midmount-type device Peripheral
USB-IF
MicroUSB Specification Specification,
Significant Features
This section identifies significant features Micro-USB specification. purpose this section present technical details associated with each major feature, rather highlight existence. Where appropriate, this section references other parts document where further details found.
Specification Compliance
device with Micro-USB features first foremost peripheral that compliant with specification.
On-The-Go Device
Micro-USB device shall conform requirements forth On-The-Go Supplement Specification.
Connectors
specification defines following connectors: Standard-A plug receptacle, Standard-B plug receptacle, Mini-B plug receptacle.
Micro-USB specification defines following additional connectors: Micro-B plug receptacle Micro-AB receptacle Micro-A plug.
Micro-AB receptacle only allowed products. other uses Micro-AB receptacle prohibited. Micro-AB receptacle accepts either Micro-A plug Micro-B plug. recommended that Micro-AB continue support requested support full functionality peripheral when Micro-B plug inserted.
Compliant Cable Assemblies
specification defines following cables: Standard-A plug Standard-B plug, Standard-A plug Mini-B plug, Captive cable with Standard-A plug.
Micro-USB specification defines following additional cables: Micro-A plug Micro-B plug, Micro-A plug Standard-A receptacle Micro-B plug Standard-A plug, Hardwired Captive cable with Micro-A plug. (Hardwired Captive cable cable, connected internally device, which designed removed user that device.)
other types cables allowed either specification, supplement. Cables allowed have receptacles either unless they meet mechanical electrical requirements adapters defined this document.
MicroUSB Specification Specification,
Plug Overmolds
Micro-USB specification constrains size shape overmolds Micro-A Micro-B plugs. Micro-A plug's overmold rectangular shape, Micro-B plug's overmold rectangular with chamfers. This allows easy recognition differentiation plugs consumer pictures Figure Figure 4-5.
MicroUSB Specification Specification,
Cables Connectors
Introduction
This chapter provides mechanical electrical specifications cables, connectors cable assemblies used interconnect devices well constraints design overmolds Micro-A Micro-B plugs.
Micro-Connector Mating
following table summarizes plugs accepted each receptacles. Table 4-1. Plugs Accepted Receptacles Receptacle Standard-A Standard-B Mini-B Micro-B Micro-AB Plugs Accepted Standard-A Standard-B Mini-B Micro-B Micro-A Micro-B
usage wiring assignments five pins Micro-A plug defined following table. Table 4-2. Micro-A Plug Assignments Contact Number Shell Signal Name VBUS Shield Typical Wiring Assignment White Green <Ra_PLUG_ID Black Drain Wire
Micro-A plug shall connected pin. Micro-B plug connected connected ground resistance greater than Rb_PLUG_ID (100k MIN). OnThe-Go device required able detect whether Micro-A Micro-B plug inserted determining resistance ground less than Ra_PLUG_ID MAX) resistance ground greater than Rb_PLUG_ID resistance less than Ra_PLUG_ID shall treated FALSE resistance greater than Rb_PLUG_ID shall treated TRUE.
MicroUSB Specification Specification,
Color Coding
following colors mandated plastic inside Micro-USB connectors defined this specification. Table 4-3. Color Coding Plugs Receptacles Connector Micro-A plug Micro-B receptacle Micro-B plug Micro-AB receptacle Color White Black Black Gray
Device, Cable Adapter Delays
Figure 7-11 specification, four test planes defined along transmission path from host transceivers peripheral transceivers. These test planes (TP) follows: TP1: pins host transceiver chip TP2: contact points host Standard-A receptacle TP3: contact points peripheral Standard-B Micro-B receptacle TP4: pins peripheral transceiver chip
maximum total delays follows: On-The-Go device TP2: Adapter: cable with Micro-A Micro-B plug:
maximum delays worst cases connection shown following tables. Table 4-4. Maximum Delay Micro-Connector Cable Location Compliant Host Standard-A receptacle Micro-A plug adapter Micro-A plug Micro-B plug cable Compliant B-device TP3-TP4 Total Delay Time
Table 4-5. Maximum Delay Standard Connector Cable Location On-The-Go Compliant Device Micro-A plug Standard-A receptacle adapter Standard-A plug Standard-B plug cable Compliant B-device Total Delay Time
MicroUSB Specification Specification,
Compliant Usage Connectors Cables
Cable assemblies connectors described below allowed other amendments specification compliant with specification labeled such.
4.5.1
Cables
cables allowed Micro-USB specification shown Figure 4-1, Figure 4-2, Figure 4-3. Cables must have propagation delay less, have physical length more than meters, meet other requirements cable. 4.5.2 Overmolds
size shape Micro-A Micro-B plug overmolds must conform constraints shown Figure Figure 4.5.3 Mechanical Interfaces
mechanical interface dimensions Micro-A Micro-B plugs shown Figure Figure 4-7. Mechanical interface dimensions Micro-AB Micro-B receptacles shown Figure Figure 4-10. 4.5.4 Surface mount standard version drawings
following these instructions, receptacles from different manufacturers used interchangeably same printed circuit board (PCB). case "surface mount standard version", dimensions contact tail shield tail must comply with figures 4-11 4-12. Note: PCB-layout drawings included reference only. Figure 4-11 Figure4-12 shows designs Micro-AB Micro-B receptacles respectively. 4.5.5 DIP-type Midmount-type receptacles
DIP-type (contact shield tails soldered through PCB) Midmount-type (connector that mounted cut-out printed circuit board between bottom surfaces.) receptacle connectors defined this standards document. These mounting styles allowed under standard long intermating conditions met. Mechanical dimensions mechanical durability values vary from Surface mount standard connector must comply with minimum values. 4.5.6 Connector Keying
This Micro connector series been designed prevent Micro-A Micro-B plugs from being incorrectly inserted into receptacle. amount metal blocking various possible incorrect insertions shown Figure 4-13 Figure 4-14, always greater than 0.35 4.5.7 Right Angle Plugs
overmolds right down angle plugs required comply with same shape constraints that apply straight plugs. Reference drawings right down angle plugs shown Figure 4-15, Figure 4-16, Figure 4-17 Figure 4-18
MicroUSB Specification Specification,
4.5.8
Adapters
Requirements: 4.5.8.1 propagation delay adapter shall less than physical length shall exceed resistance adapter through VBUS GND, including contacts, shall exceed Standard-A receptacle Micro-A plug
This adapter used connect cable with Standard-A plug On-The-Go device that MicroAB receptacle. reference drawing this adapter shown Figure 4-19.
Drawings
This section contains mechanical drawings that referenced previous section.
MicroUSB Specification Specification,
Figure Micro-A Micro-B Cable
MicroUSB Specification Specification,
Figure Standard-A Micro-B Cable
MicroUSB Specification Specification,
Figure Micro-A Captive Cable
MicroUSB Specification Specification,
Figure Micro-A Plug Overmold, Straight
MicroUSB Specification Specification,
Figure Micro-B Plug Overmold, Straight
MicroUSB Specification Specification,
Figure Micro-A Plug Interface
MicroUSB Specification Specification,
Figure Micro-B Plug Interface
MicroUSB Specification Specification,
Figure Micro-A/B Plug Interface (Cut-section)
MicroUSB Specification Specification,
Figure Micro-AB receptacle interface
MicroUSB Specification Specification,
Figure 4-10 Micro-B receptacle interface
MicroUSB Specification Specification,
Figure 4-11 Micro-AB Receptacle Design
MicroUSB Specification Specification,
Figure4-12 Micro-B Receptacle Design
MicroUSB Specification Specification,
Figure 4-13 Micro-A Plug Blockage
MicroUSB Specification Specification,
Figure 4-14 Micro-B Plug Blockage
MicroUSB Specification Specification,
Figure 4-15 Micro-A Plug, Side Right Angle
MicroUSB Specification Specification,
Figure 4-16 Micro-A Plug, Down Right Angle
MicroUSB Specification Specification,
Figure 4-17 Micro-B Plug, Side Right Angle
MicroUSB Specification Specification,
Figure 4-18 Micro-B Plug, Down Right Angle
MicroUSB Specification Specification,
Figure 4-19 Adapter, Standard-A receptacle Micro-A plug
MicroUSB Specification Specification,
Electrical Compliance Requirements
Electrical requirements unchanged from specification (Chapter Table 6-7) OnThe-Go Supplement Specification, unless otherwise specified here.
Data Rates Beyond (480Mb/s
This section will amended requirements higher data rates (beyond current specification) become available.
Level Contact Resistance
(Max) initial when measured 20mV (Max) open circuit 100mA. Maximum change (delta) after 10,000 insertion/extraction cycles maximum rate cycles hour. (When manually operated, mating speed should below cycles hour.)
5.3.1
Contact Current Rating
Signal Contacts Only
minimum when measured ambient temperature degrees Celsius. With power applied contacts, delta temperature must exceed +30degrees Celsius point connector under test. 5.3.2 With Power Applied Contacts
1.8A contacts same time 0.5A contacts minimum when measured ambient temperature degrees Celsius. With power applied contacts, delta temperature must exceed +30degrees Celsius point connector under test.
MicroUSB Specification Specification,
Mechanical Compliance Requirements
following requirements will take precedence over requirements forth specification (Chapter Table 6-8) On-The-Go Supplement Specification.
6.1.1
Operating Temperature Range
Option -30°C +80°C
6.1.2
Option -30°C +85°C (and above)
Insertion Force
Recommendations: recommend non-silicon based lubricant latching mechanism reduce wear. used lubricant affect other characteristic system. Newton's maximum maximum rate 12.5 mm(0.492") minute.
Extraction Force
(MIN) after 10000 insertion/extraction cycles maximum rate 12.5mm (0.492") minute). burs sharp edges allowed locking latches (hook surfaces which will against receptacle shield). recommend non-silicon based lubricant latching mechanism reduce wear. used lubricant affect other characteristic system.
Plating
Recommendations: Contact plating should done after stamping forming Burrs should present contact areas Contact area smooth possible before plating sealing treatment control plating porosity (contact area)
MicroUSB Specification Specification,
6.4.1 6.4.1.1
Option Receptacle (Min) 0.05 (Min) 0.75 Ni-Pd (Min) (Min) 0.05 (Min)
Contact area: Contact tail: 6.4.1.2 Plug
Contact area: 6.4.2 6.4.2.1 Option Receptacle
(Min) 0.05 (Min) 0.75 Ni-Pd (Min)
Contact area: Contact tail: 6.4.2.2 Plug
(Min) 0.75 (Min) (Min) 0.05 (Min)
Contact area:
(Min) 0.75 (Min)
Solderability
Solder shall cover minimum surface being immersed, when soldered temperature +/-5 immersion duration (component lead-free component) using Type flux.
Peel Strength (Reference Only)
Minimum 150N when soldered connector pulled from vertical direction.
Wrenching Strength (Reference Only)
Perpendicular Force Test This test shall performed using virgin parts. Perpendicular forces (Fp) applied plug when inserted distance 15mm from edge receptacle. Testing conditions method should agreed with parties. These forces four direction (left, right, down). Compliant connectors will meet following force thresholds with following results plug receptacle damage: plug damaged, such that receptacle does sustain damage:
Lead Co-Planarity
Co-planarity leads shall within 0.08mm range.
MicroUSB Specification Specification,
RoHS Compliance
Component RoHS compliant. Lead Free plug receptacle materials must conform Directive 2002/95/EC January 2003 Restriction Hazardous Substances (RoHS).
6.10 Shell Latch Materials
Shell latch materials both plug receptacle shall stainless steel mechanically equivalent material.
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