Adafruit Grand Central M4 Express SAMD Board

Adafruit Grand Central M4 Express features the Microchip SAMD51 and a 120MHz Cortex M4 with floating point support. The Grand Central provides enough pins to make it in the form of the Arduino Mega. The board has a massive number of pins, tons of analog inputs, dual DAC outputs, 8MBytes of QSPI flash, an SD card socket, and a NeoPixel.


  • Cortex M4 core running at 120MHz
  • Floating point support with Cortex M4 DSP instructions
  • 1MB flash, 256KB RAM
  • 32-bit, 3.3V logic, and power
  • 70x GPIO pins in total
  • Dual 1 MSPS DAC (A0 and A1)
  • Dual 1 MSPS ADC (15x analog pins)
  • Micro SD card slot
  • Onboard 8MB QSPI Flash storage chip
  • 8x hardware SERCOM (can be I2C, SPI, or UART)
  • 22x 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, and Pubkey controller)
  • 3.3V logic level
  • Power via 6V to 12V polarity-protected DC or the micro USB connector to any 5V USB source
  • Pre-loaded with the UF2 bootloader


เผยแพร่แล้ว: 2562-03-11 | อัปเดตแล้ว: 2566-05-25