DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb Use...
1-Wire 112-BYTE EEPROM, SOT23 T&R
1-W PROTECT 192B EPROM W/SHA1,SOT23
1-W 4KB EEPROM W/SHA-256 SFN
1-WIRE 1.8V 512B EEPROM WITH SHA-256 TDFN T&R
+5V-Powered, Multichannel RS-232 Drivers/Receivers