2

7803A–AVR–10/08

AVR601

The offering includes one low voltage power board, three processor boards and the associated

firmware. These four boards as shown on figure 2:

• MC300 is the low voltage power board (max 40V).

• MC301 is the processor board with the low cost ATtinyx61

• MC310 is the processor board with the ATMega32M1 (with CAN interface)

• More processor boards will become available in the future

Figure 1-2.

Motor control Boards offering

The Atmel Motor Control Interface bus (AMCI bus) shown on Figure 1-3, allows the communica-

tion between the power board and the processor board; most motor types are supported by this

interface:

• BLDC and BLAC motors

• AC induction motors

• Switch reluctance motors

• Stepper motors

The AMCI bus uses three 8 bit connectors and one 8/16 bit connector.

The interface supports up to four phases (U, V, W, X), each with half bridge control and both

voltage and current feedback. With three phase motors, the free X channel can be used for a

brake function.

The interface also supports Hall sensors, speed, temperature and fault signals and also allows

the control of the PFC (Power Factor Correction) from the CPU board. All signals are logic sig-

nals or analog signals scaled to reach the digital Vcc.

MC303

MC301

MC310

MC300