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Technical Support
On-Line Manuals
MCB2140 User's Guide
Introduction
Setup
Theory of Operation
Block Diagram
PCB Illustration
Schematics
Technical Data
Prototyping Area
Microcontroller
Power Supply
Configuration
JTAG Interface
LEDs
Push Buttons
Potentiometer
Speaker
Serial Ports
USB Interface
SD Connector
Writing Programs
Example Programs
Speaker
The MCB2140 board includes a speaker controlled by the output of the on-chip D/A converter. The LM386M low voltage power amplifier (IC4) amplifies the D/A output to drive the speaker.
Jumper J13 connects the D/A output (Port 0, pin 25, P0.25/AOUT) to the input of the LM386M amplifier. Removing this jumper disables the speaker.
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