TS-7840 ATSHA204
From embeddedTS Manuals
The ATSHA204 is an i2c security device that provides:
- 512 bits of OTP Memory. This can be written only once, and read many times,
- Secure key storage for 16x 256-bit keys
- Unique 72-bit serial number
- Internal RNG
On the TS-7840 this is accessed on /dev/i2c-5 at 0x64.