MCP98242T-BE/MNYBAA

Thermal Management Overview

The MCP98242T-BE/MNYBAA is a digital temperature sensor and serial EEPROM integrated circuit manufactured by Microchip Technology. It features an internal temperature sensor with ±0.5°C typical accuracy from +75°C to +95°C, operating within a -40°C to +125°C range. The device includes a 256-byte Serial Presence Detect (SPD) EEPROM for memory module data storage. It utilizes a 2-wire I²C/SMBus compatible interface and operates on a 3.0V to 3.6V supply voltage.

Thermal Management Feature Summary

• Integrates a high-accuracy digital temperature sensor with user-programmable registers for boundary trip limits and event output configuration.
• Includes a 256-byte Serial EEPROM specifically designed for DRAM DIMM Serial Presence Detect (SPD) applications with write-protection capabilities.
• Supports low-power operation through a shutdown mode that reduces current consumption to a maximum of 3 µA.

Thermal Management Applications

• JEDEC-compliant DIMM modules
• Laptops and personal computers
• Servers and hard disk drives

Thermal Management Procurement Notes

Verify the specific suffix 'MNYBAA' against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the required 3.0V to 3.6V operating voltage range and I²C/SMBus interface levels for your system design.

Thermal Management Selection Notes

Select this component for applications requiring JEDEC JC42.4 compliance and integrated SPD storage. Consider the ±0.5°C accuracy in the active range and the availability of an open-drain event output for thermal monitoring. Verify that the 8-pin package fits the PCB layout constraints.

Thermal Management Part Context

This part belongs to the MCP98242 family of digital temperature sensors with embedded EEPROM. It is optimized for mobile platform memory modules, providing both thermal sensing and vendor information storage in a single compact package suitable for space-constrained electronic designs.

Thermal Management Replacement Considerations

Check for direct pin-compatible alternatives within the MCP9824x series or other JEDEC-compliant sensors with integrated SPD if the exact suffix is unavailable. Ensure substitute parts support the same 3.0V-3.6V supply and I²C interface.

Thermal Management FAQ

What is the function of the lower 128 bytes of the EEPROM?

The lower 128 bytes (addresses 00h to 7Fh) are designated for Serial Presence Detect (SPD) data and can be permanently or software-write-protected to store DRAM vendor and product information.

How does the Event output behave when temperature limits are exceeded?

The Event pin is an open-drain output that signals when the ambient temperature goes beyond user-programmed upper or lower boundary limits. It can be configured as a comparator output or an interrupt signal.