MCP98242T-BE/MNYBAC

Thermal Management Overview

The MCP98242T-BE/MNYBAC is a digital temperature sensor and serial EEPROM integrated circuit manufactured by Microchip Technology. It operates within a voltage range of 3.0V to 3.6V and features an internal temperature sensor with accuracy of ±0.5°C typical and ±1°C maximum between +75°C and +95°C. The device includes a 256-byte Serial Presence Detect (SPD) EEPROM for memory module information storage. It utilizes a 2-wire I²C/SMBus compatible interface and is available in an 8-pin UDFN package.

Thermal Management Feature Summary

• Integrated 256-byte Serial EEPROM designed specifically for DRAM DIMM Serial Presence Detect (SPD) applications, featuring permanent and reversible software write-protect capabilities for the lower 128 bytes.
• High-accuracy temperature sensing capability meeting JEDEC JC42.4 Mobile Platform Memory Module Thermal Sensor Component specifications, providing user-programmable event boundaries and critical output configurations.
• Low-power operation with shutdown current as low as 3 µA maximum, supporting continuous conversion or low-power modes via the configuration register.

Thermal Management Applications

• DRAM DIMM Modules
• Laptops and Personal Computers
• Servers

Thermal Management Procurement Notes

Verify the specific ordering suffix MNYBAC 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 for your system design. Confirm that the 8-UDFN package dimensions meet your PCB layout constraints.

Thermal Management Selection Notes

Select this component when designing systems requiring JEDEC-compliant thermal monitoring for memory modules. It is suitable for applications needing integrated SPD storage alongside precise temperature measurement. Consider the I²C/SMBus interface requirements and address pin configurations for bus integration.

Thermal Management Part Context

The MCP98242 belongs to Microchip's family of digital temperature sensors with integrated EEPROM. It is optimized for mobile platform memory modules, combining thermal sensing with non-volatile data storage in a compact footprint. The device supports multiple packages including DFN, TDFN, UDFN, and TSSOP variants.

Thermal Management Replacement Considerations

Consult Microchip datasheets for direct replacements such as the MCP98242T-BE/MUY or MCP98242T-BE/ST. Verify pinout compatibility and electrical specifications before substitution.

Thermal Management FAQ

What is the purpose of the Event output pin?

The Event output pin is an open-drain output that signals when the ambient temperature exceeds user-programmable upper or lower boundary limits or a critical temperature threshold.

How is the EEPROM write protection configured?

The lower 128 bytes can be permanently write-protected (PWP) using the A0 pin voltage or software reversible write-protected (SWP) via the configuration registers.