User Manual

ZSTAR3 Wireless Sensing Triple Axis Reference design Introduction

ZSTAR3 Reference Design Manual, Rev. 0.1

Freescale Semiconductor 2-11

Preliminary

2.3 Featured Products

This demo consists of several Freescale products whose main features are listed below. There are come up

two accelerometers, because the Sensor board can be assembled with digital or analogue Freescale

accelerometer.

2.3.1 Triple Axis Analogue Accelerometer MMA7360L

The MMA7360L 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 MMA7360L includes a sleep mode that makes it ideal

for handheld battery powered electronics.

Features:

• 3mm x 5mm x 1.0mm LGA-14-pin package

• Low current consumption: 400 µA

• Sleep mode: 3 µA

• Low voltage operation: 2.2 V - 3.6 V

• High sensitivity (800 mV/g at 1.5g)

• Fast turn on time (0.5 ms enable response time)

• Self test for freefall detect diagnosis

• 0g-Detect for freefall protection

• Signal conditioning with low pass filter

• Robust design, high shocks survivability

• RoHS compliant

• Environmentally preferred product

• Low cost

2.3.2 Triple Axis Digital Accelerometer MMA7450L

The MMA7450L is a digital output (I2C/SPI), low power, 3x5x0.8mm low profile package capacitive

micromachined accelerometer featuring signal conditioning, a low pass filter, temperature compensation,

self test, configurable to detect 0g through interrupt pins (INT1 or INT2), and pulse (click) detect for quick

motion detection. The 0g offset can be customer calibrated using assigned 0g registers and g-Select which

allows for command selection for 3 sensitivities (2g/4g/8g). Zero-g offset and sensitivity are factory set

and require no external devices. The MMA7450L includes a standby mode that makes it ideal for handheld

battery powered electronics.