- 64-Kbit Add-Only Memory
- Features
- 65536 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 two hundred fifty six
- 256-bit pages for randomly accessing packetized
- data records
- Eack memory page can be permanently write-
- protected to prevent tampering
- Device is an "add only" memory where additional databe programmed into EPROM without disturbing existing data
- Architecture allows software to patch data by
- supersending 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
- 16.3 kbits per second
- Overdrive mode boosts communication speed
- to 142 kbits per second
- 8-bit family code specifies DS2506 communications
- requirements to reader
- Presence detector acknowledges when the reader
- first applies voltage
- Low cost PR35 or 8-pin SOIC surface mount package
- 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
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