MCP98242T-CE/MNY

Thermal Management Overview

The MCP98242T-CE/MNY is a digital temperature sensor and serial EEPROM integrated circuit manufactured by Microchip Technology. It operates within a supply voltage range of 3.0V to 3.6V and features an internal temperature sensor with accuracy specifications of ±0.5°C typical and ±1.0°C maximum between +75°C and +95°C. The device includes a 256-byte Serial Presence Detect (SPD) EEPROM, providing permanent or software write protection for the lower 128 bytes. It utilizes a 2-wire I²C/SMBus compatible interface and supports an operating temperature range from -40°C to +125°C.

Thermal Management Feature Summary

• Integrates a high-precision 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 dedicated write-protection capabilities.
• Features a low-power shutdown mode reducing current consumption to a maximum of 3 µA when inactive.
• Supports standard I²C/SMBus communication protocols with a built-in timeout mechanism for bus stability.

Thermal Management Applications

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

Thermal Management Procurement Notes

Verify the specific package suffix against official documentation, as ordering codes determine physical dimensions and pin configurations. Confirm component status, as availability may vary. Ensure the selected variant matches the required thermal resistance and electrical characteristics for the target application environment.

Thermal Management Selection Notes

Select this component for memory module designs requiring JEDEC JC42.4 compliance. Evaluate the trade-off between measurement resolution and power consumption based on system requirements. Consider the available packages, such as DFN-8 or TSSOP-8, to match PCB layout constraints and thermal management needs.

Thermal Management Part Context

This device belongs to the MCP98242 family of digital temperature sensors. It is engineered to meet industry standards for mobile platform memory modules. The integration of SPD storage allows for vendor information retention directly on the memory module, simplifying system identification and configuration.

Thermal Management Replacement Considerations

Check for alternative part numbers within the same product family that offer different package options or updated manufacturing statuses. Verify compatibility with existing board layouts and firmware drivers before substitution.

Thermal Management FAQ

What is the function of the Event pin?

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

How is the EEPROM write-protected?

The lower 128 bytes of the EEPROM can be permanently write-protected (PWP) or software reversible write-protected (SWP) to secure DRAM vendor and product information.