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MMA8450QT Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

Part # MMA8450QT
Description  3-Axis, 8-bit/12-bit Digital Accelerometer
PDF  57 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA8450QT Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc

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Sensors
7
Freescale Semiconductor
MMA8450Q
Figure 3. Application Diagram
When using MMA8450Q in applications, it is recommended that pin 1 and pin 14 (the VDD pins) be tied together. Power supply
decoupling capacitors (100 nF ceramic plus 4.7 µF bulk, or a single 4.7 µF ceramic) should be placed as near as possible to the
pins 1 and 5 of the device. The SDA and SCL I2C connections are open drain and therefore require a pull-up resistor as shown
in Figure 3
Note: The above application diagram presents the recommended configuration for the MMA8450Q. For information on future
products of this product family please review Freescale application note, AN3923, Design Checklist and Board Mounting
Guidelines of the MMA8450Q.This application note details the small modifications between the MMA8450Q and the next
generation products.
1.3
Soldering Information
The QFN package is compliant with the RoHS standard. Please refer to AN3923.
Table 1. Pin Description
Pin # Pin Name
Description
Pin Status
1
VDD
Power Supply (1.8V only)
Input
2
NC/GND
Connect to Ground or Non Connection
Input
3
NC/GND
Connect to Ground or Non Connection
Input
4SCL
I2C Serial Clock
Open Drain
5
GND
Connect to Ground
Input
6SDA
I2C Serial Data
Open Drain
7
SA0
I2C Least Significant Bit of the Device Address
(0: $1C 0: $1D)
Input
8EN
Device Enable
(1: I2C Bus Enabled; 0: Shutdown Mode)
Input
9
INT2
Inertial Interrupt 2
Output
10
GND
Connect to Ground
Input
11
INT1
Inertial Interrupt 1
Output
12
GND
Connect to Ground
Input
13
GND
Connect to Ground
Input
14
VDD
Power Supply (1.8V only)
Input
15
NC
Internally not connected
Input
16
NC
Internally not connected
Input
0.1μF
1.8V
1.8V
1.8V
4.7kΩ
4.7kΩ
1
GND
VDD
SCL
NC
INT2
INT1
GND
GND
NC
GND
MMA8450Q
2
16
12
13
14
15
11
10
3
4
5
6
7
8
9
4.7μF
INT1
INT2
EN
SA0
SCL
SDA



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