Data Brief
For further information contact your local STMicroelectronics sales office.
August 2008 Rev 1 1/5
5
STEVAL-ICV001V1
Sound/voice playback
demonstration board based on the ST7LITE02Y0
Features
■ 1% calibrated on-chip RC oscillator
■ Low-voltage detector (LVD) on chip
■ Small footprint
■ Low-power operation
■ Supports lower density serial Flash if fewer
messages needed
■ Order of filter can be reduced for further cost
savings
Description
This board demonstrates how to add audio
playback to any application using a general-
purpose ST7 microcontroller. The audio player
demonstration board reconstructs audio signals
through the PWM of the ST7FLITES2
microcontroller, and a serial Flash is used to store
the audio data in a binary file format. Once the
data is stored, the microcontroller reads it through
an SPI interface and generates the sound using
the PWM feature. A sixth order low-pass filter
removes any unwanted high-frequency
components from the signal before passing it to a
speaker.
STEVAL-ICV001V1
www.st.com
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