DS1961S www.
maxim-ic.
com 1kb Protected EEPROM iButton With SHA-1 Engine SPECIAL FEATURES § 1128 Bits of 5V EEPROM Memory Partitioned into Four Pages of 256 Bits, a 64Bit Write-Only Secret, and up to Five General-Purpose Read/Write Registers Write Access Requires Knowledge of the Secret and the Capability of Computing and Transmitting a 160-Bit MAC (Message Authentication Code) as Authorization Secret and Data Memory can be WriteProtected (All or Page 0 Only) or put in EPROM-Emulation Mode (“Write to 0”, Page 1) On-Chip, 512-Bit SHA-1 Engine to Compute 160-Bit MACs and Generate Secrets Reads and Writes Over a Wide 2.
8V to 5.
25V Voltage Range from -40°C to +85°C Communicates to Host with a S...

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