4.
Hardware User Guide
4.1.
Electrical Characteristics
I/O1 Xplained Pro can be connected to several Xplained Pro MCU boards and manually connected to
other hardware. Xplained Pro MCU board(s) that does not have 3.3V as it's primary target voltage will
read all ID devices on connected extensions to check if they support the target voltage before enabling it
to the extension headers. The table below shows the static content written in the ID chip.
Table 4-1 I/O1 Xplained Pro ID Chip Content
Data field
Content
Product name
I/O1 Xplained Pro
Minimum operation voltage
2.0V
Maximum operation voltage
3.6V
Maximum current
10mA
Related Links
Hardware Identification System
on page 5
4.2.
Headers and Connectors
4.2.1.
I/O1 Xplained Pro Extension Header
I/O1 Xplained Pro implements one standard Xplained Pro extension header marked with EXT in
silkscreen. This header makes it possible to connect the board to any Xplained Pro MCU board. The pin-
out definition for the extension header can be seen in the table below.
Table 4-2 I/O1 Xplained Pro Extension Header
Pin
on
EXT
Function
Description
1
ID
Communication line to ID chip
2
GND
Ground
3
LIGHTSENSOR
Light sensor output (ADC)
4
LP_OUT
Low pass filter output (ADC)
5
GPIO1
General Purpose I/O pin (GPIO)
6
GPIO2
General Purpose I/O pin (GPIO)
7
LED
LED control (PWM)
8
LP_IN
Low pass filter input (PWM)
9
TEMP_ALERT
ALERT pin (Pin 3) of temperature sensor chip (IRQ)
10
microSD_DETECT
Detect pin on microSD card connector (GPIO)
Atmel I/O1 Xplained Pro [USER GUIDE]
Atmel-42078B-IO1-Xplained-Pro_User Guide-10/2015
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