Datasheet

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Kona328 Arduino
UNO Compatible
Development Board
Order code: 75-0550
Overview
The Kona328 is a microcontroller board based on the
ATmega328. It has 14 digital input/output pins (of which
6 can be used as PWM outputs), 6 analog inputs, a 16 MHz
crystal oscillator, a USB connection, a power jack, an ICSP
header, and a reset button. It contains everything needed to
support the microcontroller; simply connect it to a computer
with a USB cable or power it with a AC-to-DC adapter or battery
to get started.
The Kona328 differs from all preceding boards in that it does
not use the FTDI USB-to-serial driver chip. Instead, it features
the Atmega8U2 programmed as a USB-to-serial converter.
Revision 2 of the Kona328 board has a resistor pulling the
8U2 HWB line to ground, making it easier to put into DFU mode.
Summary
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12
Input Voltage (limits) 6-20V
Digital I/O Pins 14 (of which 6 provide
PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328) of which
0.5 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz
Power
The Kona328 can be powered via the USB connection or
with an external power supply. The power source is selected
automatically.
External (non-USB) power can come either from an AC-to-DC
adapter (wall-wart) or battery. The adapter can be connected by
plugging a 2.1mm center-positive plug into the board’s power
jack. Leads from a battery can be inserted in the Gnd and Vin
pin headers of the POWER connector.
The board can operate on an external supply of 6 to 20
volts. If supplied with less than 7V, however, the 5V pin may
supply less than ve volts and the board may be unstable. If
using more than 12V, the voltage regulator may overheat and
damage the board. The recommended range is 7 to 12 volts.
The power pins are as follows:
VIN The input voltage to the Kona328 board when it’s using
an external power source (as opposed to 5 volts from
the USB connection or other regulated power source).
You can supply voltage through this pin, or, if supplying
voltage via the power jack, access it through this pin.
5V The regulated power supply used to power the
microcontroller and other components on the board.
This can come either from VIN via an on-board regulator,
or be supplied by USB or another regulated 5V supply.
3V3 A 3.3 volt supply generated by the on-board regulator.
Maximum current draw is 50 mA.
GND Ground pins.
Memory
The ATmega328 has 32 KB (with 0.5 KB used for the
bootloader). It also has 2 KB of SRAM and 1 KB of EEPROM
(which can be read and written with the EEPROM library).
Input and Output
Each of the 14 digital pins on the Kona328 can be used
as an input or output, using pinMode(), digitalWrite(), and
digitalRead() functions. They operate at 5 volts. Each pin can
provide or receive a maximum of 40 mA and has an internal
pull-up resistor (disconnected by default) of 20-50 kOhms. In
addition, some pins have specialized functions:
Serial: 0 (RX) and 1 (TX) Used to receive (RX) and transmit
(TX) TTL serial data. These pins are connected to the
corresponding pins of the ATmega8U2 USB-to-TTL Serial chip.
External Interrupts: 2 and 3 These pins can be congured to
trigger an interrupt on a low value, a rising or falling edge, or a
change in value. See the attachInterrupt() function for details.
PWM: 3, 5, 6, 9, 10, and 11 Provide 8-bit PWM output with
the analogWrite() function.
SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK) These pins
support SPI communication using the SPI library.