RD3172MMA7455L Freescale Semiconductor, RD3172MMA7455L Datasheet - Page 15

• 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

2.2
2.3
This demo consists of several Freescale products whose main features are listed below. It is made up of
two accelerometers, because the sensor board can be assembled with digital or analog Freescale
accelerometers.
2.3.1
The MMA7361LT is a low power, low profile capacitive micromachined accelerometer featuring signal
conditioning, a 1-pole low pass filter, temperature compensation, self-test, 0g-detect which detects linear
freefall, and g-Select which allows for the selection between 2 sensitivities. Zero-g offset and sensitivity
are factory set and require no external devices. The MMA7361LT includes a sleep mode that makes it ideal
for handheld battery powered electronics.
Features:
Freescale Semiconductor
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Sensing acceleration in 3 axes
Handles digital and analog sensors
Wireless communication with sensors through the 2.4 GHz band
RF protocol supports 16 sensors per one USB stick (receiver)
Star topology of the RF network
Data rate of a sensor is 30, 60 or 120 Hz
Typical wireless range is 20 m, two walls or one floor
Auto calibration function of the sensor
USB communication on the receiver part
— Virtual serial port - interface for the GUI and serial port terminal
— HID class - mouse for windows
— HID class – keyboard (game controller)
8-bit/16-bit working modes
3 push buttons on the sensor board
Current consumption:
— in normal run mode: 1.8 - 3.9 mA, depending on the actual data rate
— in sleep mode: less than 900 nA
Power consumption depends on the current output values of the sensor. At a standstill, the board
transmits only every 10th packet
Sensor Board is powered by a coin-sized CR2032 3 V battery
Small size board fits a circular plastic box.
3 x 5 x 1.0 mm LGA-14-pin package
Low current consumption: 400 µA
Sleep mode: 3 µA
Low voltage operation: 2.2 V - 3.6 V
Features of ZSTAR3
Featured Products
Triple Axis Analog Accelerometer MMA7361L
DRM103, Rev. 2
ZSTAR3 Wireless Sensing Triple Axis Reference Design Introduction
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