Caution:
Removing the resistor while the kit is powered without an ammeter or jumper may
cause the ATtiny104 to be powered through its I/O pins. This may cause permanent damage to
the device.
Figure 4-1. Current Measurement
VREG
VCC
Power disconnect
4.3.
Peripherals
4.3.1.
LED
There is one yellow LED available on the ATtiny104 Xplained Nano board that can be turned ON and
OFF. The LED can be activated by driving the connected I/O line to GND.
Table 4-2. LED Connection
ATtiny104 pin
Function
Shared functionality
PA5
Yellow LED0
Edge connector
4.3.2.
Mechanical Buttons
ATtiny104 Xplained Nano contains one mechanical button. This is a generic user configurable button and
when a button is pressed it will drive the I/O line to GND.
Info:
There is no pull-up resistor connected to the generic user button. Remember to enable
the internal pull-up in the ATtiny104 to use the button.
Table 4-3. Mechanical Button
ATtiny104 pin
Description
Shared functionality
PB1
User button
Edge connector
Atmel ATtiny104 Xplained Nano [USER GUIDE]
Atmel-42671A-ATtiny104-Xplained-Nano_User Guide-02/2016
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