ATECC608A

https://ww1.microchip.com/downloads/en/DeviceDoc/40001977A.pdf

https://www.microchip.com/en-us/products/security/security-ics/cryptoauthentication-family/use-case-archives/aws-iot-atecc608a

https://github.com/sparkfunx/Qwiic_ATECC608A

https://cryptotronix.com/2017/11/29/initial-thoughts-on-microchips-new-atecc608a/

https://github.com/Coldcard/firmware/blob/master/hardware/schematic-mark3b.png