User Manual

ZSTAR3 Reference Design Manual, Rev. 0.1
Freescale Semiconductor 3-15
Preliminary
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Chapter 3
ZSTAR3 Sensor Board Description
3.1 Board Overview
The Sensor Board utilizes a small footprint size dual-layer printed circuit board (PCB) containing all the
necessary circuitry for both accelerometer sensors and transferring data over a radio frequency (RF).
Figure 3-1. ZSTAR3 Sensor Board Overview
The board is powered by a Lithium coin-sized CR2032 battery. The block diagram of the board is as
follows:
Lithium battery on the opposite side
MC13213
MMA7450L /
LED indicator
PCB antennas
Buttons
MMA7360L
Crystal