MPU9255英文手册

　　MPU-9255 is a multi-chip module （MCM） consisting of two dies integrated into a single QFN package. One

　　die houses the 3-Axis gyroscope and the 3-Axis accelerometer. The other die houses the AK8963 3-Axis

　　magnetometer from Asahi Kasei Microdevices Corporation. Hence， the MPU-9255 is a 9-axis

　　MotionTracking device that combines a 3-axis gyroscope， 3-axis accelerometer， 3-axis magnetometer and a

　　Digital Motion Processor™ （DMP） all in a small 3x3x1mm package available as a pin-compatible upgrade

　　from the MPU-6515. With its dedicated I2

　　C sensor bus， the MPU-9255 directly provides complete 9-axis

　　MotionFusion™ output. The MPU-9255 MotionTracking device， with its 9-axis integration， on-chip

　　MotionFusion™， and run-time calibration firmware， enables manufacturers to eliminate the costly and

　　complex selection， qualification， and system level integration of discrete devices， guaranteeing optimal

　　motion performance for consumers. MPU-9255 is also designed to interface with multiple non-inertial digital

　　sensors， such as pressure sensors， on its auxiliary I2

　　C port.

　　MPU-9255 features three 16-bit analog-to-digital converters （ADCs） for digitizing the gyroscope outputs，

　　three 16-bit ADCs for digitizing the accelerometer outputs， and three 16-bit ADCs for digitizing the

　　magnetometer outputs. For precision tracking of both fast and slow motions， the parts feature a userprogrammable gyroscope full-scale range of ±250， ±500， ±1000， and ±2000°/sec （dps）， a userprogrammable accelerometer full-scale range of ±2g， ±4g， ±8g， and ±16g， and a magnetometer full-scale

　　range of ±4800µT.