Adafruit ATtiny816 Breakout with seesaw - STEMMA QT / Qwiic

ATtiny816 Breakout is a module manufactured by Adafruit that acts as a pin expander . It is designed to be used with boards that use the I2C bus , such as Arduino and Raspberry Pi. It extends the functionality of these boards with an additional 12x GPIO, 9x ADC, 5x PWM, 1x NeoPixel, 1x EEPROM with 127 bytes of NVM memory (the last byte of the EEPROM is used to select the I2C address) and 1x interrupt pin. The module is equipped with the ATtiny816 microcontroller with 8 kB of Flash memory, 512 bytes of RAM and 128 bytes of EEPROM memory.

ATtiny816 Breakout - extension for Arduino - with connectors - STEMMA QT / Qwiic - Adafruit 5681.

ATtiny816 Breakout.

• 12x GPIO with selectable pullup resistors: 0-5, 6, 8, 11, 14, 15, 16
• 9x 10-bit ADC inputs - pins 0, 1, 2, 3, 4, 5, 14, 15, 16
• 5x 8-bit PWM outputs - pins 0, 1, 7, 11, 16
• 1x NeoPixel output (up to 60 pixels)
• 1x EEPROM with 127 bytes of NVM memory - the last byte of the EEPROM is used to select the I2C address
• 1x interrupt output that can be triggered by any accessories - pin 6
• 2x I2C address selection pin - pins 12 and 13
• 1x LED

• VIN - power pin (from 2 V to 5 V)
• 3V - power pin (3.3V)
• GND - system ground
• SCL - clock pin of the I2C bus
• SDA - data pin of the I2C bus

Example connection diagram.

Kit contents.

• Type: lead expander
• Built-in chip: ATtiny816
• Flash memory: 8KB
• RAM: 512 bytes
• EEPROM: 128 bytes
• Oscillator: up to 20MHz
• Built-in 3.3V regulator
• Leads: solder pads, STEMMA QT / Qwiic

• ATtiny816 Breakout - extension for Arduino - with connectors - STEMMA QT / Qwiic - Adafruit 5681
• Goldpin strip - raster 2.54 mm - 2 pieces

• Manufacturer's website: Adafruit 5681
• User Guide
• ATtiny816 technical documentation