MMA8452QR1 Freescale Semiconductor, MMA8452QR1 Datasheet - Page 43

• Manufacturer Part Number: MMA8452QR1
• Description: Board Mount Accelerometers LOW G 3-AXIS 12BT EX VLT
• Manufacturer: Freescale Semiconductor

Specifications of MMA8452QR1

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 8 bit, 12 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
• Rohs Compliant: Yes
• Peak Reflow Compatible (260 C): Yes
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Ic Interface Type: I2C
• Sensor Case Style: QFN
• No. Of Pins: 16
• Supply Voltage Range: 1.95V To 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 60. CTRL_REG3 Description
0x2C: CTRL_REG3 Interrupt Control Register
IPOL bit selects the polarity of the interrupt signal. When IPOL is ‘0’ (default value) any interrupt event will signaled with a
logical 0.
PP_OD bit configures the interrupt pin to Push-Pull or in Open Drain mode. The default value is 0 which corresponds to Push-
Pull mode. The Open Drain configuration can be used for connecting multiple interrupt signals on the same interrupt line.
0x2D: CTRL_REG4 Register (Read/Write)
system’s interrupt controller. The interrupt controller routes the enabled functional block interrupt to the INT1 or INT2 pin.
Sensors
Freescale Semiconductor
0x2C CTRL_REG3 Register (Read/Write)
Table 61. Interrupt Enable Register Description
0x2D CTRL_REG4 Register (Read/Write)
WAKE_LNDPRT
INT_EN_ASLP
WAKE_TRANS
WAKE_PULSE
The corresponding functional block interrupt enable bit allows the functional block to route its event detection flags to the
WAKE_FF_MT
Bit 7
Bit 7
PP_OD
0
IPOL
INT_EN_LNDPRT
Interrupt Enable
INT_EN_TRANS
INT_EN_PULSE
INT_EN_FF_MT
INT_EN_DRDY
INT_EN_ASLP
WAKE_TRANS WAKE_LNDPRT
0: Transient function is bypassed in SLEEP mode. Default value: 0.
1: Transient function interrupt can wake up system
0: Orientation function is bypassed in SLEEP mode. Default value: 0.
1: Orientation function interrupt can wake up system
0: Pulse function is bypassed in SLEEP mode. Default value: 0.
1: Pulse function interrupt can wake up system
0: Freefall/Motion function is bypassed in SLEEP mode. Default value: 0.
1: Freefall/Motion function interrupt can wake up
Interrupt polarity ACTIVE high, or ACTIVE low. Default value: 0.
0: ACTIVE low; 1: ACTIVE high
Push-Pull/Open Drain selection on interrupt pad. Default value: 0.
0: Push-Pull; 1: Open Drain
Bit 6
Bit 6
0
Interrupt Enable. Default value: 0.
0: Auto-SLEEP/WAKE interrupt disabled; 1: Auto-SLEEP/WAKE interrupt enabled.
Interrupt Enable. Default value: 0.
0: Transient interrupt disabled; 1: Transient interrupt enabled.
Interrupt Enable. Default value: 0.
0: Orientation (Landscape/Portrait) interrupt disabled.
1: Orientation (Landscape/Portrait) interrupt enabled.
Interrupt Enable. Default value: 0.
0: Pulse Detection interrupt disabled; 1: Pulse Detection interrupt enabled
Interrupt Enable. Default value: 0.
0: Freefall/Motion interrupt disabled; 1: Freefall/Motion interrupt enabled
Interrupt Enable. Default value: 0.
0: Data Ready interrupt disabled; 1: Data Ready interrupt enabled
INT_EN_TRANS
Bit 5
Bit 5
INT_EN_LNDPRT
WAKE_PULSE
Bit 4
Bit 4
INT_EN_PULSE
WAKE_FF_MT
Bit 3
Bit 3
Description
INT_EN_FF_MT
Bit 2
Bit 2
0
Bit 1
0
IPOL
Bit 1
INT_EN_DRDY
MMA8452Q
PP_OD
Bit 0
Bit 0
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