SPECIAL FEATURES

• 512 bits (DS2501-UNW) or 1024 bits (DS2502-UNW)

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, 36-bit serialization, 12-bit

UniqueWare Identifier 5E7H, 8-bit CRC-tester)

assures absolute traceability because no two parts are

alike. Family code 91H for the DS2501-UNW, 89H for

the DS2502-UNW

• Built-in multidrop controller ensures compatibility with

other MicroLANTM products

• EPROM partitioned into two (DS2501-UNW) or four

(DS2502-UNW) 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

• Reduces control, address, data, power and programming signals to a single pin

• Directly connects to a single port pin of a microprocessor and communicates at up to 16.3k bits per second

• Presence detector acknowledges when reader first

applies voltage

• Low cost TO-92 or 8-pin SOIC and TSOC surface

mount packages

• Reads ovover 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