Atmel PROTO1 Xplained Pro [USER GUIDE]
42080B-MCU-10/2013
8
4.
Hardware user guide
4.1
Connectors
This chapter describes the implementation of the relevant connectors and headers on PROTO1 Xplained Pro
and their connection to the external devices. The tables of connections in this chapter also describes which
signals are shared between the headers and on-board functionality.
4.1.1
PROTO1 Xplained Pro Extension Headers
The PROTO1 Xplained Pro has two 20-pin headers. One is angled (left side of the board) and is intended to be
connected to a Xplained Pro MCU board, standard extension header. The other is a vertical header (right side
of the board) that can be used to connect signals to the prototype area or to attach other extension modules to
it. The signals are identical on both, except for the ID signal, which is slightly different. The rest of the signals
follow the standard extension header pinout specified in
Xplained Pro Standard Extension Header on page 6
The different ID signals are described in section
“PROTO1 Xplained Pro ID System” on page 9
.
Figure 4-1. Extension Header Connector.
4.1.2
Power Header
The four pin power header on the PROTO1 Xplained Pro extension board is used to probe the voltage on the
board. The pins of the header are marked in silk screen with VCC for target voltage and GND for ground.
Note
The two pin power header should not be used to apply power to the PROTO1 Xplained Pro. The
board will get power from the Xplained Pro MCU board through the 20-pin extension connector.
Table 4-1. Power Header.
Silk screen marking
Description
VCC
Target voltage, main voltage of the PROTO1 Xplained Pro extension board
GND
Ground
EP5V0
External 5.0V supplied to the Xplained Pro MCU board
VP5V0
VCC_USB,
4.1.3
External Power Terminal Block Header
The PROTO1 Xplained Pro features a two pin terminal block header to connect external power to the board.
To connect a cable to it, just insert it (remove the insulation from the end first) through the holes at the bottom
