Freescale Semiconductor, Inc.
SEMICONDUCTOR APPLICATION NOTE
Prepared by: C.S. Chua
Sensor Application Engineering
Singapore, A/P
the device is able to measure both the static acceleration from
the Earth’s gravity and the shock or vibration from an impact.
This design uses a 40G accelerometer (Motorola P/N:
MMA2200W) yields a minimum acceleration range of –40G to
+40G.
INTRODUCTION
This application note describes the concept of measuring
impact of an object using an accelerometer, microcontroller
hardware/softwareandaliquidcrystaldisplay. Duetothewide
frequency response of the accelerometer from d.c. to 400Hz,
–
+
MMA2200W
SIDE VIEW
PCB
1.0 g
FRONT VIEW
Figure 1. Orientation of Accelerometer
REV 2
Motorola Sensor Device Data
www.motorola.com/semiconductors
2–65
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MOTOROLA [ MOTOROLA ]
