MMA7456LR2 Freescale Semiconductor, MMA7456LR2 Datasheet - Page 19

• Manufacturer Part Number: MMA7456LR2
• Description: Board Mount Accelerometers 3-AXIS DIGITAL 12C&SP1
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MMA7456LR2

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Sensitivity: 64 count/g, 32 count/g, 16 count/g
• Package / Case: LGA-14
• Axis: X, Y, Z
• Acceleration Range: ± 2g, 4g, 8g
• Voltage - Supply: 2.4 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 6kHz - XY, 3.4kHz - Z
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

BASIC CONNECTIONS
Pin Descriptions
Sensors
Freescale Semiconductor
DVDD_IO
IADDR0
AVDD
GND
GND
N/C
Figure 14. Pinout Description
GND
GND
AV
Vdd
Vdd
DD
Top View
Recommended PCB Layout for Interfacing Accelerometer to Microcontroller
0.1uF
0.1uF
10uF
10uF
INT1/DRDY
SDA/SDI/SDO
SDO
N/C
N/C
INT2
Figure 15. I
Address set bit (bit 0)
Address set bit (bit 0)
0.1uF
0.1uF
10uF
10uF
2
C Connection to MCU
Table 8. Pin Descriptions
Pin #
10
11
12
13 SDA/SDI/SDO I
14
1
2
3
4
5
6
7
8
9
Vdd_IO
Vdd_IO
DV
Vdd
Vdd
10k?
10k?
INT1/DRDY
DD
R2
DV
Pin Name
DVDD_IO
Vdd
Vdd
10k?
10k?
SCL/SPC
DV
R1
IADDR0
AVDD
GND
GND
INT2
SDO
DD
N/C
N/C
N/C
CS
DD
SCL
SCL
SDA
SDA
INT2
INT2
INT1/DRDY
INT1/DRDY
Digital Power for I/O pads
Ground
No internal connection. Leave
unconnected or connect to Ground.
I
Ground
Analog Power
SPI Enable (0), I
Interrupt 1/ Data Ready
Interrupt 2
No internal connection. Leave
unconnected or connect to Ground.
No internal connection. Leave
unconnected or connect to Ground.
SPI Serial Data Output
Data Input (SDI), 3-wire interface
Serial Data Output (SDO)
I
Clock (SPC)
2
2
2
C Address Bit 0
C Serial Data (SDA), SPI Serial
C Serial Clock (SCL), SPI Serial
MCU
MCU
Description
2
C Enable (1)
MMA7456L
Status
Output
Output
Output
Output
Drain/
Input/
Open
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Pin
19