Arduino Zero / ABX00003

Arduino Zero / ABX00003 is a board with an ATSAMD21G18 microcontroller on an ARM Cortex M0+ chip for developing and running 32-bit applications. It can be used in projects with IoT and wearable devices, industrial automation, robotics, etc. The microcontroller board has a built-in Atmel Debugger (EDBG), which greatly increases the usability for software debugging (the built-in EDBG can be used through ATMEL Studio to get full access to the microcontroller's memory and help debug the code). It also supports a virtual COM port that can be used to program the device and bootloader.

The Zero has a 32-bit ARM core, which outperforms typical 8-bit microcontroller boards in the following ways:

• The 32-bit core allows you to work with 4-byte data during one processor cycle.
• 48 MHz processor frequency
• 12-channel DMA controller, which can free the processor from performing memory-intensive tasks
• 32-bit real-time counter (RTC) with clock/calendar function
• 32-bit CRC generator
• Two-channel Inter IC Sound (I2S) interface
• Peripheral touch controller (PTC)

ATTENTION!!! Unlike most Arduino and Genuino boards, the Zero operates at 3.3 V. The maximum voltage that the I/O pins can withstand is 3.3 V. Applying a voltage higher than 3.3 V to any I/O pin can damage the board.

The Arduino Zero is compatible with all boards that operate at 3.3V and are compatible with the Arduino 1.0 interface.

The Zero has a resettable fuse that protects the USB ports from short circuits and overcurrent. If more than 500 mA is connected to a USB port, the fuse will automatically break the connection until the short circuit or overload is removed.

Each of the 20 general-purpose I/O pins can be used for digital input or digital output using the pinMode(), digitalWrite(), and digitalRead() functions. Each pin can source or sink a maximum of 7 mA and has an internal 20-50 kΩ pull-up resistor (disabled by default).

Technical specifications:

In addition, some pins have specialized functions:

Serial: 0 (RX) and 1 (TX). It is used for receiving (RX) and transmitting (TX) TTL serial data. These pins are connected to the Serial1 class. The native USB port instead responds to the SerialUSB class
SPI: SS, MOSI, MISO, SCK. The ICSP located in the connector supports only SPI communication using the SPI library.
TWI: SDA pin and SCL pin. Support for TWI communication using the Wire library

Any USB port can be used for programming the board, although it is recommended to use the programming port due to the peculiarities of the chip cleaning method.

An external debugger can be used with the built-in JTAG connector.

The distance between digital pins 7 and 8 is 160 mm, which is not a multiple of the 100 mm distance between the other pins. Zero is compatible with most expansion boards designed for Uno, Diecimila or Duemilanove. Digital pins 0 to 13 (and the adjacent AREF and GND pins), analog inputs 0 to 5, the power connector and the ICSP (SPI) connector are located in equivalent places. Further down is the UART (serial port) on the same pins (0 and 1).

Overall dimensions: 68mm x 53mm

Weight: 0.012 kg