Seeeduino Crypto Board Seeed Studio Seeeduino Crypto Board is based on the high-performance ATmega4809 and Microchip ECC608 crypto chip. This ECC608 crypto chip helps in encrypted communication such as I2C encryption. The Seeeduino crypto board comes with 6 analog input pins, 14 digital I/O, 2 Grove I2C ports, and 1 Grove UART port. This board features type C power supply and data transmit.