RD3172MMA7455L Freescale Semiconductor, RD3172MMA7455L Datasheet - Page 25

• Manufacturer Part Number: RD3172MMA7455L
• Description: EVAL BOARD FOR MMA7455L
• Manufacturer: Freescale Semiconductor
• Series: ZSTAR3r

Specifications of RD3172MMA7455L

• Design Resources: ZSTAR3 Schematic
• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±2g, 4g, 8g
• Interface: RF
• Sensitivity: 16, 32, 64 LSB/g
• Voltage - Supply: 3V
• Embedded: Yes, MCU, 16-Bit
• Utilized Ic / Part: MMA7455
• Acceleration: 5000 g
• Sensing Axis: Triple Axis
• Output Type: Digital
• Interface Type: I2C, SPI
• Operating Voltage: 3.6 L
• Operating Current: 490 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MMA7455L

Table 10. Configuring the g-Select for 8-bit output using Register $16 with GLVL[1:0] bits
$14: Offset Drift Z LSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Z-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$15: Offset Drift Z MSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Z-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$16: Mode Control Register (Read/Write)
GLVL [1:0]
00: 8g is selected for measurement range.
10: 4g is selected for measurement range.
01: 2g is selected for measurement range.
STON
0: Self-test is not enabled
1: Self-test is enabled
MODE [1:0]
00: Standby Mode
Sensors
Freescale Semiconductor
Weight*
ZOFF[7]
Bit
D7
D7
D7
0
--
0
--
0
Weight*
Bit
GLVL [1:0]
ZOFF[7]
ZOFF[6]
64 LSB
DRPD
D6
D6
D6
00
01
10
--
0
0
0
Table 11. Configuring the Mode using Register $16 with MODE[1:0] bits
ZOFF[6]
ZOFF[5]
32 LSB
SPI3W
D5
D5
D5
0
--
0
0
MODE [1:0]
00
01
10
11
ZOFF[10]
Polarity
ZOFF[5]
ZOFF[4]
16 LSB
STON
D4
D4
D4
--
0
0
0
ZOFF[4]
g-Range
ZOFF[3]
GLVL[1]
8 LSB
D3
D3
D3
8g
2g
4g
--
0
0
0
01: Measurement Mode
10: Level Detection Mode
11: Pulse Detection Mode
SPI3W
DRPD
0: Data ready status is output to INT1/DRDY PIN
1: Data ready status is not output to INT1/DRDY PIN
0: SPI is 4 wire mode
1: SPI is 3 wire mode
Pulse Detection Mode
Level Detection Mode
Measurement Mode
ZOFF[10]
ZOFF[3]
ZOFF[2]
GLVL[0]
4 LSB
Standby Mode
ZOFF[9]
256 LSB
D2
D2
D2
0
0
0
Function
ZOFF[2]
MODE[1]
ZOFF[1]
ZOFF[9]
2 LSB
D1
D1
D1
0
0
0
Sensitivity
ZOFF[1]
MODE[0]
16 LSB/g
64 LSB/g
32 LSB/g
ZOFF[0]
ZOFF[8]
1 LSB
D0
D0
D0
0
0
0
128 LSB
ZOFF[8]
ZOFF[0]
MMA7455L
0.5 LSB
Function
Function
Function
Default
Default
Default
Bit
Bit
Bit
25