A-star 32u4 mini, A-star 32u4 mini pinout and components, Pinout – Pololu A-Star 32U4 User Manual
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4. A-Star 32U4 Mini
4.1. A-Star 32U4 Mini pinout and components
Pinout
This diagram identifies the I/O and power pins on the A-Star 32U4 Mini (ULV, LV, and SV versions); it is
also available as a
(269k pdf).
For more information about the ATmega32U4 microcontroller and its peripherals, see Atmel’s ATmega32U4
documentation.
Printed on the A* circuit board are indicators that you can use to quickly identify each pin’s capabilities: a triangle
next to the pin means it can be used as an analog input, and a square wave symbol under the pin number means it can
be used as a PWM output.
LEDs
The A-Star 32U4 Mini has three indicator LEDs.
The
yellow
LED is connected to Arduino pin 13, or PC7. You can drive this pin high in a user program to turn this
LED on. The
fades this LED on and off while it is waiting
for a sketch to be loaded.
The
green
LED is connected to the pin labeled TXL, or PD5, and lights when the pin is driven low. While the board
is running the A-Star 32U4 Bootloader or a program compiled in the Arduino environment, it will flash this LED
when it is transmitting data via the USB connection.
Pololu A-Star 32U4 User’s Guide
© 2001–2014 Pololu Corporation
4. A-Star 32U4 Mini
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