4
AVR1014
8296A-AVR-03/10
2.2 Specifications
MC303 maximum ratings with components as delivered:
•
Vcc = 3.3V, I
max
= 0.5A
When working at Vcc 2.7V-3.3V, the user can keep USB functional by selecting
power supply for USB coming from VBUS rather than from Vcc.The selection is made
on the J11 jumper.
2.3 Connections
Figure 2-2.
MC303 device board with power board MC300.
2.3.1 Power board connector
The MC303 processor board can connect directly to a driver board (typically the
MC300 power board). This is accomplished by a horizontal male pin header
connectors located on the right side of the board, shown in Figure 2-2.
The device board interface on MC303 connector is split into four eight-pin connectors.
Electric schematics and mechanical specifications are shown in
Figure 2-3
and signal
description in
Table 2-1.
