This document is an introduction to the product DS2433. This product is a 4kb 1-Wire® EEPROM with 4096 bits Electrically Erasable Programmable Read-Only Memory (EEPROM). It has a unique 64-bit registration number, which ensures absolute identity.
The DS2433 provides 4 kb (4096 bits) of non‑volatile memory organized into sixteen 256‑bit pages plus a 32‑byte scratchpad for buffered writes. Each device carries a unique 64‑bit laser‑etched ROM code that includes an 8‑bit family code, a 48‑bit serial number and an 8‑bit CRC, ensuring absolute identity.
Communication uses the 1‑Wire protocol over a single data pin, with standard‑speed up to 16.3 kbps and an over‑drive mode up to 142 kbps. The part operates from 2.8 V to 6.0 V and from –40 °C to +85 °C, and it supports up to 50 k write/erase cycles. Packages are available in PR‑35 surface‑mount and 8‑pin SOIC (DS2433S) formats.
| Memory size | 4 kb (4096 bits) |
|---|---|
| Voltage range | 2.8 V – 6.0 V |
| Standard communication speed | 16.3 kbps |
| Over‑drive speed | 142 kbps |
| Write/Erase cycles | 50 k cycles |
Each DS2433 contains a laser‑etched 64‑bit ROM code made up of an 8‑bit family code, a 48‑bit serial number and an 8‑bit CRC.