MMA8453QT Freescale Semiconductor, MMA8453QT Datasheet - Page 24

• Manufacturer Part Number: MMA8453QT
• Description: Board Mount Accelerometers LOW G 3-AXIS DGTL ACCEL
• Manufacturer: Freescale Semiconductor

Specifications of MMA8453QT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 8 bit, 10 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.95 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: I2C
• Shutdown: Yes
• Sensitivity: 256 count/g, 512 count/g, 1024 count/g
• Package / Case: QFN-16
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Data Registers: 0x01 OUT_X_MSB, 0x02 OUT_X_LSB, 0x03 OUT_Y_MSB, 0x04 OUT_Y_LSB, 0x05 OUT_Z_MSB, 0x06
OUT_Z_LSB
sample data output registers store the current sample data.
incrementing address range of 0x01 to 0x06 to reduce reading the status followed by 10-bit axis data to 7 bytes. If the F_READ
bit is set (0x2A bit 1), auto increment will skip over LSB registers. This will shorten the data acquisition from
7 bytes to 4 bytes. The LSB registers can only be read immediately following the read access of the corresponding MSB register.
A random read access to the LSB registers is not possible. Reading the MSB register and then the LSB register in sequence
ensures that both bytes (LSB and MSB) belong to the same data sample, even if a new data sample arrives between reading the
MSB and the LSB byte.
0x0B: SYSMOD System Mode Register
mechanism should use this register to synchronize the application with the device operating mode transitions.
0x01 OUT_X_MSB: X_MSB Register (Read Only)
Table 13. SYSMOD Description
0x02 OUT_X_LSB: X_LSB Register (Read Only)
0x05 OUT_Z_MSB: Z_MSB Register (Read Only)
24
0x06 OUT_Z_LSB: Z_LSB Register (Read Only)
MMA8453Q
0x03 OUT_Y_MSB: Y_MSB Register (Read Only)
0x04 OUT_Y_LSB: Y_LSB Register (Read Only)
0x0B SYSMOD: System Mode Register (Read Only)
These registers contain the X-axis, Y-axis, and Z-axis 10-bit output sample data expressed as 2's complement numbers. The
OUT_X_MSB, OUT_X_LSB, OUT_Y_MSB, OUT_Y_LSB, OUT_Z_MSB, and OUT_Z_LSB are stored in the auto-
The System mode register indicates the current device operating mode. Applications using the Auto-SLEEP/WAKE
SYSMOD[1:0]
Bit 7
XD9
Bit 7
Bit 7
Bit 7
XD1
Bit 7
Bit 7
YD1
ZD9
ZD1
Bit 7
YD9
0
System Mode. Default value: 00.
00: STANDBY mode
01: WAKE mode
10: SLEEP mode
Bit 6
Bit 6
Bit 6
Bit 6
XD8
XD0
Bit 6
Bit 6
Bit 6
YD8
YD0
ZD8
ZD0
0
Bit 5
Bit 5
Bit 5
Bit 5
Bit 5
XD7
Bit 5
Bit 5
YD7
ZD7
0
0
0
0
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
XD6
YD6
ZD6
0
0
0
0
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
XD5
YD5
ZD5
0
0
0
0
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
YD4
XD4
ZD4
0
0
0
0
SYSMOD1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
YD3
Bit 1
ZD3
XD3
Freescale Semiconductor
0
0
0
SYSMOD0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
YD2
Bit 0
Bit 0
ZD2
XD2
0
0
0
Sensors