
AVR430: MC300 Hardware User Guide 
Features 
•  General-purpose power stage for DC and stepper motors 
•  Modular system with 2,54mm pin header connector for device boards 
•  Four half-bridges with independent control of high and low side 
•  Onboard voltage regulators for device board (5/3,3V) and Hall sensors (5V) 
•  Hall sensor, back-EMF and center voltage feedback to device board 
•  Shunt resistor feedback to device board 
•  Electric specifications: 
-  Driver circuit: Vin 10-20V 
-  Motor: Vm 0-40V, Im
max
=6A 
•  Dimension: 100x100mm 
1 Introduction 
The MC300  is a  general-purpose power  stage board  able to  drive brushless  DC, 
brushed DC and stepper motors. The board is de signed to be a flexible platform for 
developing motor control applications. Power and all signa ls needed for a controller 
(AVR
®
 CPU)  are available  on the  left side  of the  board, giving  a modular  system 
where boards with different microcontrollers can easily be connected. 
Figure 1-1. MC300 Motor control driver board. 
8-bit    
Microcontrollers 
Application Note 
Rev. 8124C-AVR-10/08