Data Sheet
MPU-9250 Product Specification 
Document Number: PS-MPU-9250A-01 
Revision: 1.0 
Release Date: 01/17/2014 
4  Applications Information 
4.1  Pin Out and Signal Description 
Pin Number 
Pin Nam e 
Pin Description 
1 
RESV  
Reserved. Connect to VDDIO. 
7 
AUX_CL 
I
2
C Master serial clock, for connecting to external sensors 
8 
VDDIO 
Digital  I/O supply voltage 
9 
AD0 / SDO 
I
2
C Slave Address LSB (AD0); SPI serial data output (SDO) 
10 
REGOUT 
Regulator filter capacitor connection 
11 
FSY NC 
Frame synchronization digital input. Connect to GND  if unused. 
12 
INT 
Interrupt digital output (totem pole or open-drain) 
13 
VDD 
Pow er supply voltage and Digital  I/O supply voltage 
18 
GND 
Pow er supply ground 
19 
RESV  
Reserved. Do not connect. 
20 
RESV  
Reserved. Connect to GND. 
21 
AUX_DA  
I
2
C master serial data, for connecting to external sensors 
22 
nCS 
Chip select (SPI mode only) 
23 
SCL / SCLK 
I
2
C serial clock (SCL); SPI  serial clock (SCLK) 
24 
SDA / SDI 
I
2
C serial data (SDA); SPI  serial data input (SDI) 
2 – 6, 14 - 17 
NC 
Not internally connected. May be used for PCB  trace routing. 
Table 9 Signal Descriptions 
AUX_CL
VDDIO
AD0/SDO
REGOUT
FSYNC
INT
GND
SCL / SCLK
nCS
RESV
VDD
SDA / SDI
NC
AUX_DA
RESV
NC
NC
NC
RESV
NC
NC
NC
NC
NC
MPU-9250
1
2
3
4
5
6
13
18
17
16
15
14
7
8
9
10
11
12
24
23
22
21
20
19
Figure 1 Pin Out Diagram for MPU-9250  3.0x3.0x1.0mm QFN 
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