MPU6000 datasheet(39/54 Pages) ETC1

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MPU-6000/MPU-6050 Product Specification

Document Number: PS-MPU-6000A-00

Revision: 3.3

Release Date: 5/16/2012

39 of 54

10 Serial Interface Considerations (MPU-6050)

10.1 MPU-6050 Supported Interfaces

The MPU-6050 supports I

2C communications on both its primary (microprocessor) serial interface and its

auxiliary interface.

10.2 Logic Levels

The MPU-6050

’s I/O logic levels are set to be either VDD or VLOGIC, as shown in the table below.

I/O Logic Levels vs. AUX_VDDIO

AUX_VDDIO

MICROPROCESSOR LOGIC LEVELS

(Pins: SDA, SCL, AD0, CLKIN, INT)

AUXILLARY LOGIC LEVELS

(Pins: AUX_DA, AUX_CL)

VLOGIC

VDD

Note: The power-on-reset value for AUX_VDDIO is 0.

VLOGIC may be set to be equal to VDD or to another voltage. However, VLOGIC must be

≤ VDD at all

times. When AUX_VDDIO is set to 0 (its power-on-reset value), VLOGIC is the power supply voltage for

both the microprocessor system bus and the auxiliary I

2C bus, as shown in the figure of Section 10.3. When

AUX_VDDIO is set to 1, VLOGIC is the power supply voltage for the microprocessor system bus and VDD is

the supply for the auxiliary I

2C bus, as shown in the figure of Section 10.4.

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