DS1986

iButton 64K位只添加

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产品详情

65536 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground
Overdrive mode boosts communication speed to 142 kbits per second
EPROM partitioned into two hundred and 56 256-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 DS1986 communications requirements to reader
Reads over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C; programs at 11.5V to 12.0V from -40°C to +85°C

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