Am I hallucinating, or do I remember a 3 terminal EEPROM from Dallas called
a DS2222, because it of course resembled a 2N2222 transistor. It used a 1
wire bi-directional protocol and held (I can't remember) either 256 bytes or
bits of data. I remember reading about this in a Don Lancaster column quite
a few years ago.

Anybody else remember?

-Frank