Sensors
ZSTAR3 Accelerometer Family Expansion
Multiple wireless sensing triple-axis reference design
Overview
The ZSTAR3 system accommodates multiple
digital and analog accelerometer boards,
MMA7660FC ZSTAR3
connected through an RF ZigBee ? 2.4 GHz
communication to a single USB node connected
to a PC. The accelerometer boards measure
acceleration in three axes using a pin compatible
digital or, optionally, an analog sensor. The
sensor sensitivity is defined by the selected
accelerometer. The USB node is part of the
ZSTAR design, equipped with dedicated software
supporting multiple nodes.
Freescale is now offering the next-generation
ZSTAR3 with the MMA7660FC accelerometer
that offers extended functionality. The new PC
software showcases the built-in intelligence of
the MMA7660FC for consumer applications with
MMA7660FC 3 x 3 x 0.9 mm DFN
or MMA7361L triple-axis analog
accelerometer 3 x 5 x 1 mm LGA
Buttons
LED
MC13191
MC13213
orientation, shake, tap detection, auto-wake and
auto-sleep. The ZSTAR3 is a small portable
board design that utilizes the following products:
?  MMA7660FC or MMA7455L digital triple-axis 
Antenna
LEDs (3)
HC908JW32
Button
accelerometers
?  MC1321x 2.4 GHz low-power transceivers 
and an S08 MCU in one package
?  MC68HC908JW32 USB 2.0 full-speed 
Competitive Advantages
8-bit MCU
Target Applications
The ZSTAR3 design provides small portable
boards with the capacity to demonstrate and
evaluate various accelerometer applications
that accommodate a cost-effective, low-power
wireless connection. Applications include:
?  Mobile phones
?  Hand-held gaming devices
?  Portable media players
?  MP3 players
?  PDAs
?  Personal computer peripherals
?  GPS navigation devices
?  Remote controls
Feature
Multi-axis
acceleration sensor
MC13213 (ZigBee- 
compliant platform—
2.4 GHz low-power
transceiver plus
microcontroller)
MC68HC908JW32 
USB 2.0 full-speed
8-bit MCU
Low-power, low-current 
operation
Description
?  Ultra small size 
?  High sensitivity and selectable g-range of acceleration for       
multi-functional applications
?  Fast power-up response time
?  Cost-effective solution for fast time to market 
?  ZigBee 2.4 GHz allows global deployment and mesh networks 
?  System in package (SiP) means reduced PCB size of the
solution and less external components
?  Available with a variety of memory sizes and types, modules 
and packages
?  Easy to learn and use architecture
?  C-optimized architecture provides compact code
?  Battery life extension
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