DS2431

DS2431 1024-Bit, 1-Wire EEPROM General Description The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits 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. The DS2431 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 ●● Accessory/PCB Identification ●● Medical Sensor Calibration Data Storage ●● Analog Sensor Calibration Including IEEE P1451.4 Smart Sensors ●● Ink and Toner Print Cartridge Identification ●● After-Market Management of Consumables Typical Operating Circuit VCC µC RPUP IO DS2431 GND Pin Configurations appear at end of data sheet. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. Benefits and Features ●● Easily Add Traceability and Relevant Information to Any Individual System 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode (Write to 0) Switchpoint Hysteresis and Filtering to Optimize Performance in the ...