DS2431 is a 1024-bit 1-Wire EEPROM chip with independent memory pages that can be write-protected or set to EPROM simulation mode. It communicates via the 1-Wire protocol and is suitable for applications such as accessory/PCB identification, medical sensor calibration data storage, and ink/toner cartridge identification.
The DS2431 is a 1024‑bit 1‑Wire EEPROM organized into four independent 256‑bit pages. Each page can be write‑protected or set to EPROM‑emulation mode, and the device communicates over a single 1‑Wire bus using Dallas Semiconductor protocol.
The document provides detailed electrical characteristics, timing diagrams, pin configurations, memory map, command set, and example operation sequences for integrating the DS2431 into applications such as sensor calibration, cartridge identification, and consumer product after‑sales management. This manual is written in Chinese.
| Operating temperature range | -40 °C to +85 °C |
|---|---|
| Pull‑up resistance (Rpup) | 0.3 kΩ to 2.2 kΩ |
| Data retention (85 °C) | 10 years |
| ESD protection (IEC 1000‑4‑2 Level 4) | 8 kV contact, 15 kV air‑gap |
The device contains 1024 bits of EEPROM arranged as four independent 256‑bit pages.
It operates from –40 °C up to +85 °C.