User's Manual Part 1

Wireless Sensing Triple Axis Reference design, Rev. 0.9
Freescale Semiconductor 11
Chapter 2
Wireless Sensing Triple Axis Reference design introduction
2.1 Introduction
The Wireless Sensing Triple Axis Reference design (ZSTAR) has been designed as a wireless
complement to the previous STAR (Sensing Triple Axis Reference design) RD3112MMA7260Q demo. A
2.4GHz radio-frequency (RF) link based on the low-cost MC13191 family is used for connection from the
sensor to PC, allowing the visualization of key accelerometer applications.
Figure 2-1ZSTAR demo overview
The demo consists of the two boards:
• Sensor Board (or remote board) containing the MMA7260Q 3-axis accelerometer, S08 family
MC9S08QG8 8-bit microcontroller and the 2.4GHz RF chip MC13191 for wireless communication.
• USB stick, again with the MC13191 RF front-end, and the HC08 family MCHC908JW32 for the
USB communication.
Both sides communicate over the RF medium utilizing the freely available software stack SMAC from
Freescale.