ATtiny816 Breakout with seesaw - STEMMA QT / Qwiic

€4.90 *

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  • Adafruit
  • EXP-R15-1499
  • 5681
  • US
  • 85423190
  • 0.01
This breakout board is a "three in one" product: The ATtiny816 is part of the 'next gen' of... more
This breakout board is a "three in one" product:
  • The ATtiny816 is part of the 'next gen' of AVR microcontrollers, and now we have a cute development/breakout board for it, with just enough hardware to get the chip up and running.
  • It's also an Adafruit seesaw board. Adafruit seesaw is a near-universal converter framework which allows you to add and extend hardware support to any I2C-capable microcontroller or microcomputer. Instead of getting separate I2C GPIO expanders, ADCs, PWM drivers, etc, seesaw can be configured to give a wide range of capabilities.
  • Finally, with STEMMA QT/Qwiic connectors on it, you could use it as either an I2C controller or peripheral with plug-and play support.

This board comes pre-programmed with seesaw peripheral code that will let it act as an "I2C to something" converter, basically a little I2C-controlled friend to do all the timing-sensitive things many microcontrollers and microcomputers are not good at.

For example, using this breakout with the pre-burned seesaw firmware gives you:

  • 12 x GPIO with selectable pullup resistors: 0-5, 6, 8, 11, 14, 15, 16
  • 9 x 10-bit ADC inputs - pins 0, 1, 2, 3, 4, 5, 14, 15, 16
  • 5 x 8-bit PWM outputs - pins 0, 1, 7, 11, 16
  • 1 x NeoPixel output (up to 60 pixels)
  • 1 x EEPROM with 127 byte of NVM memory (handy for storing small access tokens or MAC addresses) - last byte of EEPROM is used for I2C address selection
  • 1 x Interrupt output that can be triggered by any of the accessories - pin 6
  • 2 x I2C address selection pins - pins 12 and 13
  • 1 x Activity LED on pin 10, tied active low

Please note: The boards do not come with a bootloader. If you want to do development on seesaw (e.g. changing the configuration) you need a separate UPDI programming setup!

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