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> DS2502: 1Kb Add-Only Memory
DS2502: 1Kb Add-Only Memory
DS2502: 1Kb Add-Only Memory
Número de Pieza :
DS2502
Disponibilidad:
En Existencia ; 100
Precio
Precio:
$2.56
Descuento por Volumen
Cantidad
Precio
25+
$1.71
Cantidad
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1024 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground
Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
Built-in multidrop controller ensures compatibility with other microlan™ products
EPROM partitioned into four 256-bit pages for randomly accessing packetized data
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
Directly connects to a single port pin of a microprocessor and communicates at up to 16.3kbits per second
8-bit family code specifies DS2502 communications requirements to reader
Presence detector acknowledges when the reader first applies voltage
Low cost TO-92
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 +50°C
The
DS2502 1Kb Add-Only Memory
identifies and stores relevant information about the product to which it is associated. This lot- or product-specific information can be accessed with minimal interface—for example, a single port pin of a microcontroller. The DS2502 consists of a factory-lasered registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (09h) plus 1Kb of EPROM which is user-programmable. The power to program and read the DS2502 is derived entirely from the 1-Wire® communication line.
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