This document provides information on a product that is still in production but not recommended for new designs. The product is a memory module temperature sensor with a 2 Kb SPD EEPROM. The temperature sensor has a resolution of 0.25°C and an accuracy of ±1°C. The EEPROM has the same functionality as ST's M34E02 SPD EEPROM, supporting byte and page write operations, with an operating temperature range of -40°C to +85°C or -40°C to +125°C.
The STTS424E02 is a memory module temperature sensor designed for DIMM modules in mobile computing platforms, servers, and industrial applications. It integrates a JEDEC JC 42.4 compatible temperature sensor with a 2 Kb serial presence detect (SPD) EEPROM. The device is packaged in a compact 2 mm x 3 mm 8-lead DFN package available in two variations: DA (max height 0.90 mm) and DN (max height 0.80 mm).
| Temperature sensor resolution | 0.25 °C (typ)/LSB |
|---|---|
| Supply voltage | 2.7 V to 3.6 V |
| Maximum operating supply current (EEPROM standby) | 210 pA |
| ADC conversion time | 125 ms (max) |
| Ambient temperature sensing range | -40 °C to +125 °C |
| EEPROM size | 2 Kb |
| Package dimensions | 2 mm x 3 mm |
No, the document states it is not recommended for new designs and suggests STTS2002 instead.
The accuracy is +3°C over the full temperature measurement range of -40 °C to +125 °C.
The temperature sensor supports up to 400 kHz transfer rate.