ANALOG DEVICES DS2431P-A1+T

DS2431P-A1+T is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. It communicates over the single-conductor 1-wire bus. The communication follows the standard 1-wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop 1-wire net environment. Applications include automotive sensor identification and calibration data storage, automotive cable assembly identification, and accessory/PCB identification.