DESCRIPTION

· The NXP SE98A is a high-precision temperature sensor designed for DIMM modules, operating from -40°C to +125°C with ±1°C accuracy between +75°C and +95°C.

· It features an 11-bit ADC for temperature monitoring, updating readings 8 times per second, and supports I2C-bus/SMBus communication.

· The sensor operates within a voltage range of 1.7 V to 3.6 V and includes programmable registers for shutdown, low-power modes, and temperature event boundaries.

· It provides an open-drain EVENT output configurable as active LOW or HIGH, suitable for thermostat operations or microprocessor-based systems.

· The SE98A supports up to eight devices on a single bus via three address pins and includes SMBus TIMEOUT to prevent system lock-ups.

FEATURES

· JEDEC (JC-42.4) TS3000B1 DIMM compliant with ±0.5°C typical accuracy between 75°C and 95°C.

· Optimized for a voltage range of 1.7 V to 3.6 V with a shutdown current of 0.1 μA (typical) and 5.0 μA (maximum).

· 2-wire I2C-bus/SMBus interface compatible, operating from 0 Hz to 400 kHz.

· Includes SMBus ALERT and programmable TIMEOUT functions.

· 11-bit ADC providing 0.125°C resolution for temperature-to-digital conversion.

APPLICATIONS

· Ideal for monitoring DRAM temperature in custom DIMM modules, especially where larger SPD is required.

· Suitable for mobile platform memory module thermal sensing in accordance with JEDEC specifications.

· Can be used in microprocessor-based systems for temperature event interrupt outputs.

· Applicable in systems requiring critical temperature monitoring with configurable EVENT output signals.