SCHEDA DUE ARDUINO COMPATIBILE Atmel SAM3X8E ARM 32bit Cortex-M3 CPU

SCHEDA DUE ARDUINO COMPATIBILE Atmel SAM3X8E ARM 32bit Cortex-M3 CPU

Maggiori dettagli

ARD00117
New product

15,16 €tasse escl.

- +

Add to compare

 
Dettagli

SCHEDA DUE ARDUINO COMPATIBILE Atmel SAM3X8E ARM 32bit Cortex-M3 CPU

La scheda Compatibile Arduino DUE si basa sul microcontrollore di Arduino, la prima basata sul processore ARM core a 32bit, l'Atmel SAM3X8E Arm Cortex-M3 MCU, che ne migliora e ne implementa le funzionalità.

La scheda Compatibile Arduino DUE è dotata di 54 pin di input/output digitali (16 dei quali possono essere usati come segnali PWM), 12 ingressi analogici con risoluzione a 12bit, 4 UART (porte seriali fisiche), 2 DAC output (convertitore digitale- analogico), un quarzo a 84MHz, due connessioni USB, un jack per l'alimentazione, un connettore per la programmazione ICSP, un connettore JTAG ed un pulsantino per il reset della scheda.

La scheda contiene tutto ciò ch'è necessario per supportare il microcontroller, collegandola semplicemente ad un computer tramite micro-USB o alimentandola con una batteria o con un adattatore AC / DC.

La scheda DUE è compatibile con tutti gli shields Arduino che lavorano a 3,3V.

A differenza delle altre schede Arduino, la DUE funziona a 3.3VLa tensione massima che i pin di I/O possono fornire e possono tollerare è 3.3V. Fornire ai pin di input tensioni maggiori, come ad esempio 5V, potrebbe danneggiare irreparabilmente la scheda.

Caretteristica della scheda Arduino DUE è la presenza di due differenti connettori USB, uno del tipo micro-A e l'altro del tipo micro-B. Il primo, quello cioè con il connettore usb di tipo micro-A, rappresenta la connessione nativa capace di comportarsi come un host usb; ciò significa che a questo particolare connettore sarà possibile connettere periferiche usb esterne alla scheda, come ad esempio mouse, tastiere e smartphone. Mentre per quanto riguarda l'altra connessione, quella relativa al connettore di tipo usb-B, essa è da intendersi puramente per scopi di debbuagging del sistema. Per cominciare ad utilizzare la Arduino DUE è semplicemente necessario connettere la scheda ad un PC tramite un cavo USB micro-B (disponibile nel nostro negozio) oppure alimentare la scheda tramite un adattatore AC-to-DC o tramite una semplice batteria.

Il connettore USB micro-A accetta in ingresso anche il cavo con connettore USB micro-B.

Specifiche tecniche

MicrocontrolloreAT91SAM3X8E
Tensione operativa3.3V
Tensione di alimentazione (raccomandata)7-12V
Tensione di alimentazione (limite)6-20V
I/O digitali54 (dei quali 12 possono essere uscite PWM)
Ingressi analogici12
Uscite analogiche2 (DAC)
Corrente massima per tutti gli I/O130 mA
Corrente massima dal pin 3.3V Pin800 mA
Corrente massima dal pin 5V Pin800 mA
SRAM96 KB (64 + 32 KB)
Velocità di clock84 MHz

 

 

Overview

The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU (datasheet). It is the first Arduino board based on a 32-bit ARM core microcontroller. It has 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button.

 

Warning: Unlike other Arduino boards, the Arduino Due board runs at 3.3V. The maximum voltage that the I/O pins can tolerate is 3.3V. Providing higher voltages, like 5V to an I/O pin could damage the board.

 

The board contains everything needed to support the microcontroller; simply connect it to a computer with a micro-USB cable or power it with a AC-to-DC adapter or battery to get started. The Due is compatible with all Arduino shields that work at 3.3V and are compliant with the 1.0 Arduino pinout.

 

The Due follows the 1.0 pinout:

  • TWI: SDA and SCL pins that are near to the AREF pin.
  • The IOREF pin which allows an attached shield with the proper configuration to adapt to the voltage provided by the board. This enables shield compatibility with a 3.3V board like the Due and AVR-based boards which operate at 5V.
  • An unconnected pin, reserved for future use.

 

The Due has a dedicated forum for discussing the board.

 

ARM Core benefits

The Due has a 32-bit ARM core that can outperform typical 8-bit microcontroller boards. The most significant differences are:

 

  • A 32-bit core, that allows operations on 4 bytes wide data within a single CPU clock. (for more information look int type page).
  • CPU Clock at 84Mhz.
  • 96 KBytes of SRAM.
  • 512 KBytes of Flash memory for code.
  • a DMA controller, that can relieve the CPU from doing memory intensive tasks.

 

Schematic, Reference Design & Pin Mapping

EAGLE files: arduino-Due-reference-design.zip

 

Schematic: arduino-Due-schematic.pdf

 

Pin Mapping: SAM3X Pin Mapping page

 

Summary

Microcontroller AT91SAM3X8E
Operating Voltage 3.3V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 54 (of which 12 provide PWM output)
Analog Input Pins 12
Analog Outputs Pins 2 (DAC)
Total DC Output Current on all I/O lines 130 mA
DC Current for 3.3V Pin 800 mA
DC Current for 5V Pin 800 mA
Flash Memory 512 KB all available for the user applications
SRAM 96 KB (two banks: 64KB and 32KB)
Clock Speed 84 MHz

 

Power

The Arduino Due can be powered via the USB connector 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 five 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 Arduino 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. This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.

     

  • 3.3V. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 800 mA. This regulator also provides the power supply to the SAM3X microcontroller.

     

  • GND. Ground pins.

     

  • IOREF. This pin on the Arduino board provides the voltage reference with which the microcontroller operates. A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V.

 

Memory

The SAM3X has 512 KB (2 blocks of 256 KB) of flash memory for storing code. The bootloader is preburned in factory from Atmel and is stored in a dedicated ROM memory. The available SRAM is 96 KB in two contiguous bank of 64 KB and 32 KB. All the available memory (Flash, RAM and ROM) can be accessed directly as a flat addressing space.

 

It is possible to erase the Flash memory of the SAM3X with the onboard erase button. This will remove the currently loaded sketch from the MCU. To erase, press and hold the Erase button for a few seconds while the board is powered.

 

Input and Output

  • Digital I/O: pins from 0 to 53 
    Each of the 54 digital pins on the Due can be used as an input or output, using pinMode(), digitalWrite(), anddigitalRead() functions. They operate at 3.3 volts. Each pin can provide (source) a current of 3 mA or 15 mA, depending on the pin, or receive (sink) a current of 6 mA or 9 mA, depending on the pin. They also have an internal pull-up resistor (disconnected by default) of 100 KOhm. In addition, some pins have specialized functions:

     

  • Serial: 0 (RX) and 1 (TX)
  • Serial 1: 19 (RX) and 18 (TX)
  • Serial 2: 17 (RX) and 16 (TX)
  • Serial 3: 15 (RX) and 14 (TX) 
    Used to receive (RX) and transmit (TX) TTL serial data (with 3.3 V level). Pins 0 and 1 are connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.

     

  • PWM: Pins 2 to 13 
    Provide 8-bit PWM output with the analogWrite() function. the resolution of the PWM can be changed with theanalogWriteResolution() function.

     

  • SPI: SPI header (ICSP header on other Arduino boards) 
    These pins support SPI communication using the SPI library. The SPI pins are broken out on the central 6-pin header, which is physically compatible with the Uno, Leonardo and Mega2560. The SPI header can be used only to communicate with other SPI devices, not for programming the SAM3X with the In-Circuit-Serial-Programming technique. The SPI of the Due has also advanced features that can be used with the Extended SPI methods for Due.

     

  • CAN: CANRX and CANTX 
    These pins support the CAN communication protocol but are not not yet supported by Arduino APIs.

     

  • "L" LED: 13 
    There is a built-in LED connected to digital pin 13. When the pin is HIGH, the LED is on, when the pin is LOW, it's off. It is also possible to dim the LED because the digital pin 13 is also a PWM outuput.

     

  • TWI 1: 20 (SDA) and 21 (SCL)
  • TWI 2: SDA1 and SCL1. 
    Support TWI communication using the Wire library.

     

  • Analog Inputs: pins from A0 to A11 
    The Due has 12 analog inputs, each of which can provide 12 bits of resolution (i.e. 4096 different values). By default, the resolution of the readings is set at 10 bits, for compatibility with other Arduino boards. It is possible to change the resolution of the ADC with analogReadResolution(). The Due’s analog inputs pins measure from ground to a maximum value of 3.3V. Applying more then 3.3V on the Due’s pins will damage the SAM3X chip. The analogReference() function is ignored on the Due.

 

The AREF pin is connected to the SAM3X analog reference pin through a resistor bridge. To use the AREF pin, resistorBR1 must be desoldered from the PCB.

 

  • DAC1 and DAC2 
    These pins provides true analog outputs with 12-bits resolution (4096 levels) with the analogWrite() function. These pins can be used to create an audio output using the Audio library.

 

Other pins on the board:

 

  • AREF 
    Reference voltage for the analog inputs. Used with analogReference().

     

  • Reset 
    Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board.

 

Communication

The Arduino Due has a number of facilities for communicating with a computer, another Arduino or other microcontrollers, and different devices like phones, tablets, cameras and so on. The SAM3X provides one hardware UART and three hardware USARTs for TTL (3.3V) serial communication.

 

The Programming port is connected to an ATmega16U2, which provides a virtual COM port to software on a connected computer (To recognize the device, Windows machines will need a .inf file, but OSX and Linux machines will recognize the board as a COM port automatically.). The 16U2 is also connected to the SAM3X hardware UART. Serial on pins RX0 andTX0 provides Serial-to-USB communication for programming the board through the ATmega16U2 microcontroller. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the board. The RX and TX LEDs on the board will flash when data is being transmitted via the ATmega16U2 chip and USB connection to the computer (but not for serial communication on pins 0 and 1).

 

The Native USB port is connected to the SAM3X. It allows for serial (CDC) communication over USB. This provides a serial connection to the Serial Monitor or other applications on your computer. It also enables the Due to emulate a USB mouse or keyboard to an attached computer. To use these features, see the Mouse and Keyboard library reference pages.

 

The Native USB port can also act as a USB host for connected peripherals such as mice, keyboards, and smartphones. To use these features, see the USBHost reference pages.

 

The SAM3X also supports TWI and SPI communication. The Arduino software includes a Wire library to simplify use of the TWI bus; see the documentation for details. For SPI communication, use the SPI library.

 

Programming

The Arduino Due can be programmed with the Arduino software (download). For details, see the reference and tutorials.

 

Uploading sketches to the SAM3X is different than the AVR microcontrollers found in other Arduino boards because the flash memory needs to be erased before being re-programmed. Upload to the chip is managed by ROM on the SAM3X, which is run only when the chip's flash memory is empty.





Abbiamo disponibili datasheet di tutti i componenti, qualora non fosse presente nella scheda download del prodotto inviaci un messaggio dal modulo contattaci e lo pubblicheremo il prima possibile nel nostro sito.


8 altri prodotti della stessa categoria:

Compare 0

No products

To be determined Shipping
0,00 € Total

Prices are tax excluded

Check out