Description
The STTS424E02 is targeted for DIMM Modules in Mobile Personal Computing Platforms (Laptops), Server Memory Modules and other industrial applications. The Thermal Sensor (TS) in the STTS424E02 is compliant with the JEDEC specification, which defines Memory Module Thermal Sensors requirements for Mobile platforms. The 2 Kbit Serial Presence Detect (SPD) I2C-compatible Electrically Erasable Programmable Memory (EEPROM) in the STTS424E02 is organized as 256 x8 bits and is functionally identical to the industry standard M34E02.

FEATUREs
■ STTS424E02 includes a JEDEC JC 42.4
   compatible temperature sensor, integrated
   with industry standard 2 Kbit Serial Presence
   Detect (SPD) EEPROM

Temperature sensor
■ Temperature sensor resolution:
   0.25°C (typ)/LSB
■ Temperature sensor accuracy:
   – ± 1°C from +75°C to +95°C
   – ± 2°C from +40°C to +125°C
   – ± 3°C from –40°C to +125°C
■ ADC conversion time: 125 ms (max)
■ Supply voltage: 2.7 V to 3.6 V
■ Maximum operating supply current: 210 µA
   (EEPROM inactive)
■ Hysteresis selectable set points from: 0, 1.5, 3,
   6.0°C
■ Ambient temperature sensing range: -40°C to
   +125°C

2Kb SPD EEPROM
■ Functionality identical to ST’s M34E02 SPD
   EEPROM
■ Permanent and reversible software data
   protection for the lower 128 bytes
■ Single supply voltage: 2.7 V to 3.6 V
■ Byte and page write (up to 16 bytes)
■ Self-time WRITE cycle (5 ms, max)
■ Automatic address incrementing
■ More than 1 million erase/WRITE cycles
■ Operating temperature range:
   – -40°C to +85°C (DA package only)
   – -40°C to +125°C (DN package only)

Two-wire bus
■ 2-wire SMBus/I2C - compatible serial interface
■ Temperature sensor supports SMBus timeout
■ Supports up to 400 kHz transfer rate

Packages
■ DN: 2 mm x 3 mm TDFN8, height: 0.80 mm
   (max)(a)
■ DA: 2 mm x 3 mm DFN8, height: 0.90 mm
   (max)
■ RoHS compliant, halogen-free