 MCB2140 User's Guide | |
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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 ProgramsSpeaker
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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