MMA8450QT Freescale Semiconductor, MMA8450QT Datasheet - Page 5

• Manufacturer Part Number: MMA8450QT
• Description: Board Mount Accelerometers 12bit 3-Axis FIFO HPF PL
• Manufacturer: Freescale Semiconductor

Specifications of MMA8450QT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 12 bit
• Supply Voltage (max): 1.89 V
• Supply Voltage (min): 1.71 V
• Supply Current: 3 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Shutdown: Yes
• Sensitivity: 0.976 mg/digit, 1.953 mg/digit, 3.906 mg/digit
• Package / Case: QFN-16
• Output Type: Digital
• Package Type: QFN
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3mm
• Product Height (mm): 1mm
• Product Length (mm): 3mm
• Mounting: Surface Mount
• Pin Count: 16
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Ic Interface Type: I2C, Serial
• Sensor Case Style: QFN
• No. Of Pins: 16
• Supply Voltage Range: 1.71V To 1.89V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Sensors
Freescale Semiconductor
Appendix C................................................................................................................................................................................44
Appendix B................................................................................................................................................................................47
Package Dimensions................................................................................................................................................................55
6.7
6.8
0x31 - 0x33: PULSE_THSX, Y, Z Pulse Threshold for X, Y & Z Registers ..................................................................38
0x34: PULSE_TMLT Pulse Time Window 1 Register ..................................................................................................38
0x35: PULSE_LTCY Pulse Latency Timer Register ....................................................................................................39
0x36: PULSE_WIND Second Pulse Time Window Register ........................................................................................39
0x37: ASLP_COUNT Auto-Sleep Inactivity Timer Register .........................................................................................39
0x38: CTRL_REG1 System Control 1 Register ...........................................................................................................40
0x39: CTRL_REG2 System Control 2 Register ...........................................................................................................41
0x3A: CTRL_REG3 Interrupt Control Register ............................................................................................................41
0x3C: CTRL_REG5 Register (Read/Write) ..................................................................................................................42
0x3C: CTRL_REG5 Interrupt Configuration Register ..................................................................................................43
0x3D: OFF_X Offset Correction X Register .................................................................................................................43
0x3E: OFF_Y Offset Correction Y Register .................................................................................................................43
0x3F: OFF_Z Offset Correction Z Register ..................................................................................................................43
Table 45. PULSE_THSX Description ........................................................................................................................38
Table 46. PULSE_THSY Description ........................................................................................................................38
Table 47. PULSE_THSZ Description ........................................................................................................................38
Table 48. Time Step for PULSE Time Limit at ODR and Power Mode ......................................................................38
Table 49. Time Step for PULSE Latency at ODR and Power Mode .........................................................................39
Table 50. Time Step for PULSE Detection Window at ODR and Power Mode .........................................................39
Auto-Sleep Registers ................................................................................................................................................39
Table 51. ASLP_COUNT Description .......................................................................................................................39
Table 52. ASLP_COUNT Relationship with ODR .....................................................................................................40
Table 53. CTRL_REG1 Description ..........................................................................................................................40
Table 54. Sleep Mode Poll Rate Description..............................................................................................................40
Table 55. System Output Data Rate Selection ..........................................................................................................40
Table 56. Full Scale Selection ...................................................................................................................................41
Table 57. CTRL_REG2 Description ..........................................................................................................................41
Table 58. CTRL_REG3 Description ..........................................................................................................................42
Table 59. interrupt Enable Register Description ........................................................................................................42
Table 60. Interrupt Configuration Register Description .............................................................................................43
User Offset Correction Registers ..............................................................................................................................43
Table 61. OFF_X Description ....................................................................................................................................43
Table 62. OFF_Y Description.................................................................................................................................... 43
Table 63. OFF_Z Description ....................................................................................................................................43
Table 64. MMA8450Q Register Map .........................................................................................................................44
Table 65. Accelerometer Output Data .......................................................................................................................46
Figure 13. Distribution of Pre Board Mounted Devices Tested in Sockets (1 count = 3.9 mg) ................................47
Figure 14. Distribution of Post Board Mounted Devices (1 count = 3.9 mg) ............................................................48
Figure 15. 2g/4g/8g X-axis TCS (%/°C) ....................................................................................................................49
Figure 16. 2g/4g/8g Y-axis TCS (%/°C) ....................................................................................................................50
Figure 17. 2g/4g/8g Z-axis TCS (%/°C) ....................................................................................................................51
Figure 18. 2g/4g/8g X-axis TCO (mg/°C) ..................................................................................................................52
Figure 19. 2g/4g/8g Y-axis TCO (mg/°C) ..................................................................................................................53
Figure 20. 2g/4g/8g Z-axis TCO (mg/°C) ..................................................................................................................54
0x31 PULSE_THSX Register (Read/Write) .........................................................................................................38
0x32 PULSE_THSY Register (Read/Write) .........................................................................................................38
0x33 PULSE_THSZ Register (Read/Write) .........................................................................................................38
0x34 PULSE_TMLT Register (Read/Write)..........................................................................................................38
0x35 PULSE_LTCY Register (Read/Write) .........................................................................................................39
0x36 PULSE_WIND Register (Read/Write) .........................................................................................................39
0x37 ASLP_COUNT Register (Read/Write) .........................................................................................................39
0x38 CTRL_REG1 Register (Read/Write) ...........................................................................................................40
0x39 CTRL_REG2 Register (Read/Write)............................................................................................................41
0x3A CTRL_REG3 Register (Read/Write) ..........................................................................................................41
0x3C CTRL_REG5 Register (Read/Write) .......................................................................................................... 42
0x3C CTRL_REG5 Register (Read/Write) ..........................................................................................................43
0x3D OFF_X Register (Read/Write) ....................................................................................................................43
0x3E OFF_Y Register (Read/Write) ....................................................................................................................43
0x3F OFF_Z Register (Read/Write) ....................................................................................................................43
MMA8450Q
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