MCP98244T-BE/MNYAA

Thermal Management Overview

The MCP98244T-BE/MNYAA is a digital temperature sensor with integrated 4 Kbit Serial EEPROM for SPD, manufactured by Microchip Technology. It operates within a voltage range of 1.7V to 3.6V and features a 1MHz I²C interface. The device meets JEDEC JC42.4-TSE2004B1 specifications. Temperature accuracy is ±0.2°C/±1°C (typ./max.) from +75°C to +95°C, and ±1°C/±3°C (typ./max.) from -40°C to +125°C. It is housed in an 8-pin TDFN package.

Thermal Management Feature Summary

• Integrated 4 Kbit EEPROM organized into two banks of 256 x 8-bit for storing memory module details and vendor information.
• User-programmable registers allow configuration of Shutdown or Low-Power modes and specification of temperature Event boundaries.
• Open-drain Event output pin provides configurable active-low or active-high signals for thermostat operation or microprocessor interrupts.
• Industry-standard I²C Fast Mode Plus compatible serial interface supporting up to 1MHz communication speed.

Thermal Management Applications

• DIMM Modules for Servers, PCs, and Laptops
• Temperature Sensing for Solid State Drive (SSD)
• General Purpose Temperature Datalogging

Thermal Management Procurement Notes

Verify the specific suffix 'MNYAA' against official Microchip documentation to confirm it denotes the standard TDFN-8 reel packaging variant. Ensure the ordering code matches the exact component revision required for your design. Cross-reference the datasheet DS20002327D for any recent updates regarding availability or package changes before finalizing procurement plans.

Thermal Management Selection Notes

Select this component when JEDEC JC42.4 compliance is mandatory for memory modules. It is suitable for applications requiring precise thermal monitoring alongside non-volatile data storage on the same footprint. Consider the 1.7V minimum operating voltage for low-power system designs. Verify that the host controller supports the required I²C addressing and timing specifications for reliable communication.

Thermal Management Part Context

This part belongs to the MCP9824x family of digital temperature sensors designed specifically for DRAM DIMMs. It integrates a high-accuracy band-gap sensor with delta-sigma ADC technology. The inclusion of SPD EEPROM distinguishes it from standard standalone sensors, allowing simultaneous thermal management and memory identification within a single compact surface-mount package.

Thermal Management Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Microchip's official replacement guides or contact technical support directly for validated alternatives if this specific part number becomes unavailable.

Thermal Management FAQ

How does the A0 pin function on the MCP98244?

The A0 pin serves as a multi-function input. It acts as a client address bit for the I²C interface and accepts a high voltage input (VHV) to enable the EEPROM software write protect feature.

What is the purpose of the Exposed Thermal Pad (EP)?

The Exposed Thermal Pad (EP) is internally connected to the GND pin. Connecting it to the same potential on the PCB improves thermal conduction from the die to the board.