MMA7660FCR1 Freescale Semiconductor, MMA7660FCR1 Datasheet - Page 15

• Manufacturer Part Number: MMA7660FCR1
• Description: Board Mount Accelerometers 3-Axis Digital Out Accelerometer
• Manufacturer: Freescale Semiconductor

Specifications of MMA7660FCR1

• Sensing Axis: X, Y, Z
• Acceleration: 1.5 g
• Digital Output - Number Of Bits: 6 bit
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Digital Output - Bus Interface: 12 C
• Sensitivity: 21.33 count/g
• Package / Case: DFN-10
• Output Type: Digital
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

$03: Tilt Status (Read only)
TILT
BaFro[1:0]
00:Unknown condition of front or back
01: Front: Equipment is lying on its front
10: Back: Equipment is lying on its back
PoLa[2:0]
000: Unknown condition of up or down or left or right
001: Left: Equipment is in landscape mode to the left
010: Right: Equipment is in landscape mode to the right
101: Down: Equipment standing vertically in inverted
orientation
110: Up: Equipment standing vertically in normal orientation
Note: When entering active mode from standby mode, if the device is flat (±1g on Z-axis) the value for BaFro will be back (-1g)
or front (+1g) but PoLa will be in unknown condition. if the device is being held in an Up/Down/Right/Left position, the PoLa value
will be updated with current orientation, but BaFro will be in unknown condition.
$04: Sample Rate Status Register (Read only)
SRST
AMSRS
0: Samples per second specified in AMSR[2:0] is not active
1: Samples per second specified in AMSR[2:0] is active
$05: Sleep Count Register (Read/Write)
SPCNT
Writing to the SPCNT (0x05) register resets the internal sleep counter.
SC[7:0]
reaches the value set by SC[7:0], MMA7660FC will exit Auto-Sleep and switch to the samples per second specified in AWSR[1:0]
of the SR (0x08) register.
Sensors
Freescale Semiconductor
Sets the 8-bit maximum count value for the 8-bit internal sleep counter in Auto-Sleep. When the 8-bit internal sleep counter
Shake
SC[7]
D7
D7
D7
0
0
0
0
SC[6]
Alert
D6
D6
D6
0
0
0
0
SC[5]
Tap
D5
D5
D5
0
0
0
0
PoLa[2]
SC[4]
D4
D4
D4
0
0
0
0
Tap
1: Equipment has detected a tap
0: Equipment has not detected a tap
Alert
0: Register data is valid
1: The register was read at the same time as MMA7660FC
was attempting to update the contents. Re-read the register
Shake
0: Equipment is not experiencing shake in one or more of the
axes enabled by SHINTX, SHINTY, and SHINTZ
1: Equipment is experiencing shake in one or more of the
axes enabled by SHINTX, SHINTY, and SHINTZ
AWSRS
0: Samples per second specified in AWSR[1:0] is not active
1: Samples per second specified in AWSR[1:0] is active
PoLa[1]
SC[3]
D3
D3
D3
0
0
0
0
PoLa[0]
SC[2]
D2
D2
D2
0
0
0
0
BaFro[1]
AWSRS
SC[1]
D1
D1
D1
0
0
0
MMA7660FC
BaFro[0]
AMSRS
SC[0]
D0
D0
D0
0
0
0
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