This product is a digital thermometer with a measurement range of -40°C to +85°C and a selectable resolution of 9 to 12 bits. The 1-Wire interface requires one port pin for communication. Each device has a unique 64-bit factory-lasered registration number
The DS28EA00 is a 1‑Wire digital thermometer that offers selectable 9‑ to 12‑bit resolution, unique 64‑bit registration numbers, and optional sequence‑detect functionality using two programmable I/O pins. It can be powered directly from the data line (parasite power) and operates over a temperature range of –40 °C to +85 °C.
The datasheet provides absolute maximum ratings, electrical characteristics, pin descriptions, memory map, and command sets. It also explains the chain‑detect feature, PIO behavior, and timing parameters for temperature conversion and EEPROM programming.
| Operating temperature range | -40 °C to +85 °C |
|---|---|
| Resolution | User selectable 9‑ to 12‑bit |
| Unique registration number | 64‑bit factory‑laser‑etched |
| PIO pins | Two general‑purpose programmable I/O pins |
| Package | 8‑pin µSOP |
| Standby current (parasite power) | 1.5 µA |
The device operates from –40 °C to +85 °C.
Yes, it can derive power directly from the 1‑Wire data line (parasite power).
Resolution is user selectable between 9‑, 10‑, 11‑, and 12‑bit.
It is housed in an 8‑pin µSOP package.