NXP USA Inc. SE97BTP,547

Description
Meets JEDEC Specification 42.4 TSE2002B1
Measures temperature from -40 °C to 125 °C with JEDEC Grade B ±1 °C maximum accuracy between 75 °C and 95 °C critical zone
Provides 256 bytes of EEPROM memory communicating via the 12C-bus/SMBus
Typically mounted on a DDR3 Dual In-Line Memory Module (DIMM)
Replaces the Serial Presence Detect (SPD) used to store memory module and vendor information
Operates over the Voo range of 3.0 V to 3.6 V
Consists of a AΣ Analog to Digital Converter (ADC) that monitors and updates its own temperature readings 10 times per second
Converts the reading to a digital data and latches them into the data temperature register
User-programmable registers, specification of upper/lower alarm and critical temperature trip points, EVENT output control, and temperature shutdown provide flexibility for DIMM temperature-sensing applications
Outputs an EVENT signal using an open-drain output that can be pulled up between 0.9 V and 3.6 V when the temperature changes beyond the specified boundary limits
User can set the EVENT output signal polarity as either an active LOW or active HIGH comparator output for thermostat operation, or as a temperature event interrupt output for microprocessor-based systems
EVENT output can also be configured as only a critical temperature output
EEPROM is designed specifically for DRAM DIMMS SPD
Lower 128 bytes (address 00h to 7Fh) can be Permanent Write Protected (PWP) or Reversible Write Protected (RWP) by software
Upper 128 bytes (address 80h to FFh) are not write protected and can be used for general purpose data storage
Has a single die for both the temp sensor and EEPROM for higher reliability
Supports the industry-standard 2-wire 12C-bus/SMBus serial interface
SMBus TIMEOUT function is supported to prevent system lock-ups
Manufacturer and Device ID registers provide the ability to confirm the identity of the device
Three address pins allow up to eight devices to be controlled on a single bus

Features
High accuracy temperature measurement
Integrated EEPROM memory
Flexible EVENT output control
User-programmable registers
Single die for both temp sensor and EEPROM
Industry-standard 2-wire 12C-bus/SMBus serial interface
SMBus TIMEOUT function
Manufacturer and Device ID registers
Three address pins

Applications
DDR3 DIMMs
Mobile platform memory modules
Temperature monitoring in electronic systems