• Part: DS2502-UNW
  • Description: UniqueWare Add-Only Memory
  • Manufacturer: Dallas Semiconductor
  • Size: 37.88 KB
DS2502-UNW Datasheet (PDF) Download
Dallas Semiconductor
DS2502-UNW

Description

UniqueWare Add-Only Memories are factory programmed versions of the DS2502 (1024 bit) and the DS2505 (16Kb) Add-Only Memories, respectively.

Key Features

  • 1024 bits or 16Kb Electrically Programmable Read Only Memory (EPROM) municates with the economy of one signal plus ground
  • Built-in multidrop controller ensures patibility with other 1-Wire products
  • EPROM partitioned into 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 municates at up to 16.3 kbits per second
  • Presence detector acknowledges when reader first applies voltage
  • Low cost TO-92 or 8-pin SOIC and 6-pin TSOC surface mount packages
  • Pins 5 to 8 ----- TSOC Ground Data NC NC NC SOIC NC NC Data Ground NC