Sensors
ZSTAR3 Accelerometer Family Expansion
Overview
The ZSTAR3 system accommodates multiple
digital and analog accelerometer boards,
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
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
accelerometers
• MC1321x 2.4 GHz low-power transceivers
and an S08 MCU in one package
• MC68HC908JW32 USB 2.0 full-speed
8-bit MCU
Antenna
HC908JW32
LEDs (3)
LED
Buttons
MMA7660FC 3 x 3 x 0.9 mm DFN
or MMA7361L triple-axis analog
accelerometer 3 x 5 x 1 mm LGA
MC13191
Multiple wireless sensing triple-axis reference design
MMA7660FC ZSTAR3
MC13213
Button
Competitive Advantages
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
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
MMA7660FC Digital Accelerometer
• ±1.5g three-axis digital accelerometer
with I
2
C
• Small, low-profile 3 x 3 x 0.9 mm
DFN package
• MMA7660FC low current consumption
specifications
Off mode: 0.4 μA
Standby mode: 2 μA
Active mode: 47 μA at one sample
per second
Configurable output data rate from 1
to 120 samples per second
• Configurable orientation detection for
portrait/landscape capability
Six orientations: left, right, up, down,
back and front
• Gesture detection, including shake and
tap detection
ZSTAR3 Software Concepts
Sensor Board
LED
Buttons
GPIO
S
M
A
C
KBI
Data Buffer
GPIO
Sensor
I
2
C
ADC
RF
Protocol
Handler
RF
Modem
2.4 GHz
Sensor Data
Collector
and Driver
USB Stick
LEDs
MC13191
RF
Modem
2.4 GHz
GPIO
RF
Protocol
Handler
Sensors Data
RF
Protocol
Handler
USB
Driver
SPI
S
M
A
C
USB
USB
Port
MMA7455L Digital Accelerometer
• Digital output (I
2
C/SPI) for processor system
performance
• Small, low-profile 3 mm x 5 mm x 1 mm
14-pin LGA package
• XYZ: three axes of sensitivity in one device
(2g, 4g, 8g)
• Single or double click (pulse) recognition
• High sensitivity
64 LSB/g at 2g
64 LSB/g at 8g in 10-bit mode
Wireless Sensing Triple-Axis Reference Design (ZSTAR) Development Tool Family
Part Number
RD3965MMA7660FC
RD3172MMA7455L
D3172MMA7361L
D3172MMA7455L
Description
ZSTAR3 featuring the MMA7660FC digital accelerometer
ZSTAR3 featuring the MMA7455L digital accelerometer
Analog sensor only for the ZSTAR3
Digital sensor only for the ZSTAR3
MC13213 ZigBee Platform
• IEEE 802.15.4 standard compliant on-chip
transceiver/modem
• 2.4 GHz
• 16 selectable channels
• Programmable output power
• Multiple power saving modes
• 2V to 3.4V operating voltage with on-chip
voltage regulators
Learn More:
For more information about Freescale sensor
tools, please visit
www.freescale.com/zstar.
Freescale and the Freescale logo are trademarks or registered trademarks of Freescale Semiconductor, Inc.
in the U.S. and other countries. All other product or service names are the property of their respective owners.
© Freescale Semiconductor, Inc. 2009
ZSTAR3BOARDFS
REV 2
Analog electronics
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