MPU-6881.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 MPU-6881 데이타시트 다운로드

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InvenSense Inc.
1745 Technology Drive, San Jose, CA 95110 U.S.A
+1(408) 9887339
www.invensense.com
Document Number: PS-MPU-6881A-00
Revision: 1.0
Release Date: 05/22/2014
MPU-6881
Product Specification
Revision 1.0
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MPU-6881 Product Specification
Document Number: PS-MPU-6881A-00
Revision: 1.0
Release Date: 05/22/2014
TABLE OF CONTENTS
TABLE OF FIGURES.........................................................................................................................................4
TABLE OF TABLES ..........................................................................................................................................5
1 DOCUMENT INFORMATION ......................................................................................................................6
1.1 REVISION HISTORY ..............................................................................................................................6
1.2 PURPOSE AND SCOPE..........................................................................................................................7
1.3 PRODUCT OVERVIEW...........................................................................................................................7
1.4 APPLICATIONS .....................................................................................................................................7
2 FEATURES ..................................................................................................................................................8
2.1 GYROSCOPE FEATURES.......................................................................................................................8
2.2 ACCELEROMETER FEATURES ...............................................................................................................8
2.3 ADDITIONAL FEATURES ........................................................................................................................8
3 ELECTRICAL CHARACTERISTICS ...........................................................................................................9
3.1 GYROSCOPE SPECIFICATIONS ..............................................................................................................9
3.2 ACCELEROMETER SPECIFICATIONS.....................................................................................................10
3.3 ELECTRICAL SPECIFICATIONS.............................................................................................................11
3.4 I2C TIMING CHARACTERIZATION.........................................................................................................15
3.5 SPI TIMING CHARACTERIZATION.........................................................................................................16
3.6 ABSOLUTE MAXIMUM RATINGS ...........................................................................................................18
4 APPLICATIONS INFORMATION ..............................................................................................................19
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
PIN OUT DIAGRAM AND SIGNAL DESCRIPTION .....................................................................................19
TYPICAL OPERATING CIRCUIT.............................................................................................................20
BILL OF MATERIALS FOR EXTERNAL COMPONENTS ..............................................................................20
BLOCK DIAGRAM ...............................................................................................................................21
OVERVIEW ........................................................................................................................................21
THREE-AXIS MEMS GYROSCOPE WITH 16-BIT ADCS AND SIGNAL CONDITIONING................................22
THREE-AXIS MEMS ACCELEROMETER WITH 16-BIT ADCS AND SIGNAL CONDITIONING ........................22
I2C AND SPI SERIAL COMMUNICATIONS INTERFACES ..........................................................................22
SELF-TEST ........................................................................................................................................24
CLOCKING .........................................................................................................................................25
SENSOR DATA REGISTERS.................................................................................................................25
FIFO ................................................................................................................................................25
INTERRUPTS ......................................................................................................................................25
DIGITAL-OUTPUT TEMPERATURE SENSOR ..........................................................................................25
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MPU-6881 Product Specification
Document Number: PS-MPU-6881A-00
Revision: 1.0
Release Date: 05/22/2014
4.15 BIAS AND LDOS ................................................................................................................................26
4.16 CHARGE PUMP ..................................................................................................................................26
4.17 STANDARD POWER MODES ................................................................................................................26
5 PROGRAMMABLE INTERRUPTS............................................................................................................27
6 DIGITAL INTERFACE ...............................................................................................................................28
6.1 I2C AND SPI SERIAL INTERFACES ......................................................................................................28
6.2 I2C INTERFACE..................................................................................................................................28
6.3 I2C COMMUNICATIONS PROTOCOL .....................................................................................................28
6.4 I2C TERMS ........................................................................................................................................31
6.5 SPI INTERFACE .................................................................................................................................32
7 SERIAL INTERFACE CONSIDERATIONS...............................................................................................32
7.1 MPU-6881 SUPPORTED INTERFACES.................................................................................................33
8 ASSEMBLY ...............................................................................................................................................34
8.1 ORIENTATION OF AXES ......................................................................................................................34
8.2 PACKAGE DIMENSIONS ......................................................................................................................35
9 PART NUMBER PACKAGE MARKING ...................................................................................................36
10 RELIABILITY .............................................................................................................................................37
10.1 QUALIFICATION TEST POLICY .............................................................................................................37
10.2 QUALIFICATION TEST PLAN ................................................................................................................37
11 REFERENCE .............................................................................................................................................38
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MPU-6881 Product Specification
Document Number: PS-MPU-6881A-00
Revision: 1.0
Release Date: 05/22/2014
Table of Figures
Figure 1 I2C Bus Timing Diagram ....................................................................................................................15
Figure 2 SPI Bus Timing Diagram ....................................................................................................................16
Figure 3 Pin out Diagram for MPU-6881 3.0x3.0x0.9mm QFN........................................................................19
Figure 4 MPU-6881 QFN Application Schematic. (a) I2C operation, (b) SPI operation. ................................20
Figure 5 MPU-6881 Block Diagram ..................................................................................................................21
Figure 6 MPU-6881 Solution Using I2C Interface ............................................................................................23
Figure 7 MPU-6881 Solution Using SPI Interface ............................................................................................24
Figure 8 START and STOP Conditions ............................................................................................................29
Figure 9 Acknowledge on the I2C Bus ..............................................................................................................29
Figure 10 Complete I2C Data Transfer .............................................................................................................30
Figure 11 Typical SPI Master / Slave Configuration.........................................................................................32
Figure 12 I/O Levels and Connections .............................................................................................................33
Figure 13 Orientation of Axes Sensitivity and Polarity of Rotation ...................................................................34
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MPU-6881 Product Specification
Document Number: PS-MPU-6881A-00
Revision: 1.0
Release Date: 05/22/2014
Table of Tables
Table 1 Gyroscope Specifications ......................................................................................................................9
Table 2 Accelerometer Specifications ..............................................................................................................10
Table 3 D.C. Electrical Characteristics .............................................................................................................11
Table 4 A.C. Electrical Characteristics .............................................................................................................13
Table 5 Other Electrical Specifications .............................................................................................................14
Table 6 I2C Timing Characteristics ...................................................................................................................15
Table 7 SPI Timing Characteristics ..................................................................................................................16
Table 8 fCLK = 20MHz .....................................................................................................................................17
Table 9 Absolute Maximum Ratings .................................................................................................................18
Table 10 Signal Descriptions ............................................................................................................................19
Table 11 Bill of Materials ..................................................................................................................................20
Table 12 Standard Power Modes for MPU-6881..............................................................................................26
Table 13 Table of Interrupt Sources .................................................................................................................27
Table 14 Serial Interface...................................................................................................................................28
Table 15 I2C Terms...........................................................................................................................................31
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