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DS1985

Part Number	DS1985
Manufacturer	Maxim Integrated
Description	16Kb Add-Only iButton
Published	May 24, 2018
Detailed Description	19-4892; Rev 8/09 SPECIAL FEATURES  16384 bits Electrically Programmable Read Only Memory (EPROM) communicates with th...
Datasheet	DS1985 PDF File

Overview

19-4892; Rev 8/09 SPECIAL FEATURES  16384 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground  EPROM partitioned into 64 256-bit pages for randomly accessing packetized data records  Each memory page can be permanently write protected to prevent tampering  Device is an “add only” memory where additional data can be programmed into EPROM without disturbing existing data  Architecture allows software to patch data by superseding an old page in favor of a newly programmed page  Reduces control, address, data, power, and programming signals to a single data pin  8-bit family code specifies DS1985 communications requirements to r...

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