DESCRIPTION
The DS2430A 256-bit 1-Wire EEPROM 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 DS2430A 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 (14h) plus 256 bits of user-programmable EEPROM and a 64-bit one-time programmable application register.

FEATURES
▪ 256-bit Electrically Erasable Programmable
   Read Only Memory (EEPROM) plus 64-bit
   one-time programmable application register
▪ Unique, factory-lasered and tested 64-bit
   registration number (8-bit family code + 48-bit
   serial number + 8-bit CRC tester) assures
   absolute identity because no two parts are alike
▪ Built-in multidrop controller ensures
   compatibility with other MicroLAN products
▪ EEPROM organized as one page of 32 bytes
   for random access
▪ Reduces control, address, data, and power to a
   single data pin
▪ Directly connects to a single port pin of a
   microprocessor and communicates at up to
   15.3kbits per second
▪ 8-bit family code specifies DS2430A
   communication requirements to reader
▪ Presence detector acknowledges when reader
   first applies voltage
▪ Low cost TO-92 or 6-pin TSOC and UCSP
   surface mount package
▪ Reads and writes over a wide voltage range of
   2.8V to 5.25V from -40°C to +85°C