JEDEC-compliant memory-temperature sensor supports I²C and SMBus

NXP Semiconductors has introduced a surface-mount temperature-sensor IC meeting JEDEC JC42.4 and capable of detecting local temperature to an accuracy of ±1°C. The NXP SE98 fulfils systemmanagement duties in high-performance memory modules including DDR2 and DDR3 memories.

The sensor is I²C-compatible and optimised for applications that separate the temperature sensing and Serial Presence Detect (SPD) functions. Over-, under- and critical-temperature alarms are supported. I²C connectivity allows easy communication and control, using Standard and Fast I²C modes.

The SE98’s communication interface can also be configured for SMBus connection with support for SMBus ALERT and TIMEOUT functions.

An external Event pin is also provided, which can be used as an on/off output or as an interrupt to signal the host when the temperature reading exceeds the threshold of the alarm.

Compliance with the standard JEDEC JC42.4 footprint and specification, which defines memory-module thermal-sensor requirements for mobile platforms, ensures easy mechanical and electrical integration.

 

FEATURES Security-locked bit for temperature setpoint data protection Low operating and standby currents Hardware and software write protection Programmable hysteresis threshold TSSOP-8 and HVSON-8 packages

APPLICATIONS Memory modules Portable computers Servers Communications

 

 

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