General Descriptio：

The DS2431 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data iswritten to an 8-byte scratchpad, verified, and thencopied to the EEPROM memory. As a special feature, thefour memory pages can individually be write protected orput in EPROM-emulation mode, where bits can only bechanged 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. Eachdevice has its own unalterable and unique 64-bit ROMregistration number that is factory lasered into the chip.The registration number is used to address the device ina multidrop, 1-Wire net environment.

Features：

♦ 1024 Bits of EEPROM Memory Partitioned IntoFour Pages of 256 Bits

♦ Individual Memory Pages Can Be PermanentlyWrite Protected or Put in EPROM-Emulation Mode(“Write to 0”)

♦ Switchpoint Hysteresis and Filtering to OptimizePerformance in the Presence of Noise

♦ IEC 1000-4-2 Level 4 ESD Protection (±8kVContact, ±15kV Air, Typical)

♦ Reads and Writes Over a Wide Voltage Rangefrom 2.8V to 5.25V from -40°C to +85°C

♦ Communicates to Host with a Single DigitalSignal at 15.4kbps or 125kbps Using 1-WireProtocol

♦ Also Available as Automotive Version MeetingAEC-Q100 Grade 1 Qualification Requirements(DS2431-A1; Refer to the IC Data Sheet forDetails)

Applications：

Accessory/PCB Identification

Medical Sensor Calibration Data Storage

Analog Sensor Calibration Including IEEEP1451.4 Smart Sensors

Ink and Toner Print Cartridge Identification

After-Market Management of Consumables