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Product Detailed Parameters
- Description：IC TEMP SENSOR 2WIRE 8-DFN
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Temp Monitoring System (Sensor), DIMM DDR Memory
- Sensor Type：Internal
- Sensing Temperature：-40°C ~ 125°C
- Accuracy：±3°C(Max)
- Topology：ADC (Sigma Delta), Register Bank
- Output Type：I2C/SMBus
- Output Alarm：Yes
- Output Fan：Yes
- Voltage - Supply：3V ~ 3.6V
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-VFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x3)
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Overview
The MCP98242T-BE/MCBAA is a digital temperature sensor and serial EEPROM integrated circuit manufactured by Microchip Technology. It features an internal temperature-to-digital converter 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 operates on a 3.0V to 3.6V supply via an I²C/SMBus interface.
Feature Summary
- Integrates a high-accuracy digital temperature sensor with a 256-byte Serial Presence Detect (SPD) EEPROM for DIMM applications.
- Supports user-programmable registers for configurable shutdown modes, hysteresis settings, and temperature event boundaries.
- Features permanent and reversible software write protection for the lower 128 bytes of the EEPROM to secure vendor information.
Applications
- JEDEC-compliant DIMM modules
- Laptops and personal computers
- Servers and hard disk drives
Procurement Notes
Verify the specific suffix 'MCBAA' against official documentation to confirm package type and availability status. Confirm that the ordering suffix does not alter the electrical function or pinout compared to standard variants. Ensure compatibility with the required 3.0V to 3.6V operating voltage range for your system design.
Selection Notes
Select this component for systems requiring JEDEC JC42.4 compliance and integrated SPD storage. It is suitable for environments needing precise thermal monitoring with low standby current. Consider the 8-pin package options available for surface-mount assembly constraints.
Part Context
This part belongs to the MCP98242 family of digital temperature sensors. It is designed specifically for mobile platform memory modules. The device combines sensing capabilities with non-volatile memory in a compact form factor.
Replacement Considerations
Check for MCP98242 variants with different package suffixes such as BE/MC or BE/ST if the MCBAA suffix is unavailable. Verify that substitute parts maintain the same I²C/SMBus interface and EEPROM capacity.
FAQ
What is the purpose of the Event output pin?
The Event pin is an open-drain output that signals when the ambient temperature exceeds user-programmed upper or lower boundary limits.
How is the EEPROM write protection configured?
The lower 128 bytes can be permanently write-protected (PWP) or software reversible write-protected (SWP) to prevent unauthorized modification of SPD data.
