The sensor allows the hardware or software to monitor memory module temperature to improve data reliability in the target application environment especially in ruggedized applications. There are two different types of temperature sensors, which are fully compliant with JEDEC JC42.4 and are used in DIMM modules. The first is the TSE2002 family of EEPROM devices with integrated thermal sensor and the second is the TSE3000 family of standalone thermal sensors. Though not technically an SPD device, the TS3000 families of sensors are defined to be compatible with modules using SPD devices. The TSE2002 family of EEPROM devices, with integrated thermal sensor, is a digital temperature sensor with accuracy up to ±0.5°C and is used to target applications demanding highest level of temperature readout. The device also contains a 512 Byte EEPROM for storage of vendor information and system configuration such as SPD for DIMM modules. Figure 1 shows the application of a temperature sensor in a memory module.