Is it a board, a hub .. not it is Grand Central!

December 19, 2018 //By Wisse Hettinga
Is it a board, a hub .. not it is Grand Central!
This Adafruit dev board is so big, it's not named after a Metro train, it's a whole freakin' station!

This board is like a freight train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for support, this will for sure be your favourite new chipset.

The Grand Central is the first SAMD board that has enough pins to make it in the form of the Arduino Mega - with a massive number of pins, tons of analog inputs, dual DAC output, 8 Mb of QSPI flash, SD card socket, and a NeoPixel.

To start off our ATSAMD51 journey we are going large with the Mega shape and pinout you know and love. The front half has the same shape and pinout as our Metro's, so it is compatible with all our shields. It's got analog pins where you expect, and SPI/UART/I2C hardware support in the same spot as the Metro 328 and M0. But! It's powered with an ATSAMD51P20:

  • Cortex M4 core running at 120 MHz
  • Hardware DSP and floating point support
  • 1MB flash, 256 KB RAM
  • 32-bit, 3.3V logic and power
  • 70 GPIO pins in total
  • Dual 1 MSPS DAC (A0 and A1)
  • Dual 1 MSPS ADC (15 analog pins)
  • 8 x hardware SERCOM (can be I2C, SPI or UART)
  • 22 x PWM outputs
  • Stereo I2S input/output with MCK pin
  • 12-bit Parallel capture controller (for camera/video in)
  • Built in crypto engines with AES (256 bit), true RNG, Pubkey controller

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