InvenSense MPU-6050, Руководство пользователя

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MPU-6000/MPU-6050 EV Board User Guide
Document Number: AN-MPU-6000EVB-00
Revision: 01
Release Date: 1/12/2011
InvenSense, Inc., 1197 Borregas Ave., Sunnyvale, Ca 94089, USA
5
AN-MPU-6000EVB-00
Tel: +1 (408) 988-7339 Fax: +1 (408) 988-8104 ©2011 InvenSense, Inc. All rights reserved.
Website: http//www.invensense.com
3.1 MPU-6000 Key Function and Pin-outs
The MPU-60X0 EVB is a fully-tested evaluation board, providing for quick evaluation of the MPU-
60X0
‟s X- , Y- , and Z- axis angular rate gyr X- , Y- , and Z- axis accelerometer . MPU-
60X0 has a primary interface to talk to the application processor and a secondary interface to
communicate to an external sensor. MPU-60X0 EVB comes preloaded with a AKM 3-axis
compass to let the user experience a 9-axis sensor fusion output from MPU-60X0
‟s Motion
Processing Unit. The MPU-60X0
uses InvenSense‟s proprietary MEMS technology with driven
vibrating masses to produce a functionally complete, low-cost motion sensor. All required
conditioning electronics are integrated into a single chip measuring 4 x 4 x 0.9mm. It
incorporates X- , Y- and Z-axis low-pass filters and an EEPROM for on-chip factory calibration of
the sensor. Factory trimmed scale factors eliminate the need for external active components and
end-user calibration. A built-in Proportional-To-Absolute-Temperature (PTAT) sensor provides
temperature compensation information. The product is lead-free and Green Compliant.
3.2 MPU-6000 vs. MPU-6050
The MPU-6000 and MPU-6050 are identical, except that the MPU-6050 supports the I
2
C serial
interface only, and has a separate VLOGIC reference pin. The MPU-6000 supports both I
2
C and
SPI interfaces and has a single supply pin, VDD, which is both
the device‟s logic reference supply
and the analog supply for the part. The table below outlines these differences:
Table 1. Primary Differences between MPU-6000 and MPU-6050
Part / Item MPU-6000 MPU-6050
VDD
2.5V±5%, 3.0V±5%, or
3.3V±5%.
2.5V±5%, 3.0V±5%, or
3.3V±5%.
VLOGIC n/a 1.71V to VDD
Serial Interfaces Supported I
2
C, SPI I
2
C
Pin 8 /CS VLOGIC
Pin 9 AD0/SDO AD0
Pin 23 SCL/SCLK SCL
Pin 24 SDA/SDI SDA
3.3 MPU-6000 Bus Connection
The MPU-60X0 EVB communicates to a system processor through the customer header using
the I
2
C serial interface. The device always acts as a slave when communicating to the system
processor.