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Microchip Technology MCP98244T-BE/MNYAB
- Part No.:
- MCP98244T-BE/MNYAB
- Manufacturer:
- Microchip Technology
- Category:
- Thermal Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MCP98244T-BE/MNYAB.pdf
- Description:
- IC TEMP SENSOR SPD EEPROM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,074
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Product details
Overview
MCP98244T-BE/MNYAB from Microchip Technology is a JEDEC JC42.4-compliant digital temperature sensor with integrated 4 Kbit serial EEPROM, designed for Serial Presence Detect (SPD) in DDR4 DIMM modules. It delivers ±0.2°C typical accuracy from +75°C to +95°C, operates from 1.7V to 3.6V, draws 100 µA typical supply current in EEPROM-idle mode, and features an open-drain Event output for thermal alerting in memory subsystems.
For engineers reviewing the MCP98244T-BE/MNYAB datasheet, MCP98244T-BE/MNYAB pinout, MCP98244T-BE/MNYAB application, or MCP98244T-BE/MNYAB equivalent, this page provides verified technical context, JEDEC-aligned specifications, TDFN-8 package details, real-world DIMM/SSD use cases, and two validated alternative parts for SPD-embedded thermal monitoring.
Technical Context
The MCP98244T-BE/MNYAB integrates a band-gap temperature sensor and Delta-Sigma ADC with user-programmable registers for event boundary configuration, shutdown control, and resolution selection (0.0625°C to 0.5°C). Its I²C interface supports Fast Mode Plus up to 1 MHz with tSU:DAT as low as 50 ns at 3.6V.
It implements JEDEC JC42.4-TSE2004B1 compliance via factory-configured capability register bits, dual-bank 256×8-bit EEPROM with per-page software write protection, and A0-pin high-voltage input (7–10 V) enabling reversible EEPROM lock. The Event pin operates as configurable comparator or interrupt output with programmable polarity and hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temp Accuracy (75–95°C) | ±0.2°C typ. - meets JEDEC Grade B requirement for DIMM thermal validation |
| I²C Interface Speed | Up to 1 MHz - enables fast SPD data reads during memory initialization | VDD Range | 1.7V to 3.6V - compatible with DDR4 VDDQ and low-power system rails |
| EEPROM Capacity | 4 Kbit (2 × 256 × 8) - stores full SPD data including vendor ID, timing, and thermal profiles |
| Shutdown Current | 0.2 µA typ. - minimizes power draw during DIMM standby without losing temperature state |
| Package | TDFN-8 (2×3 mm, exposed pad) - optimized for high-density DIMM PCB layout with thermal enhancement |
| Event Output | Open-drain, programmable polarity - directly interfaces with DDR4 memory controller thermal alert inputs |
Pinout & Package
Package: 8-pin TDFN (2 mm × 3 mm), with exposed thermal pad (EP) internally connected to GND for enhanced thermal dissipation in DIMM slot environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address LSB / EEPROM Write Protect Enable | Configures I²C address bit 0; accepts 7–10 V to activate software write protection on EEPROM banks |
| A1 | Address bit 1 | Part of 3-bit hardware address (A2:A1:A0) allowing up to 8 devices on same I²C bus |
| A2 | Address bit 2 | Enables multi-sensor thermal mapping across DIMM ranks or channels |
| GND | Ground reference | Reference for all analog and digital circuitry; EP connects internally to GND |
| SDA | Bidirectional I²C data line | Open-drain, requires external pull-up; supports standard/fast/fast-plus I²C protocols |
| SCL | I²C clock input | Host-generated clock; timing compliant with tLOW/tHIGH minima down to 260 ns at 1 MHz |
| Event | Programmable thermal alert output | Open-drain output asserting when TA exceeds TUPPER/TLOWER/TCRIT; polarity and hysteresis configurable |
| VDD | Power supply input | Supplies both sensor and EEPROM; POR threshold 1.4–1.6 V ensures reliable startup across voltage range |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC JC42.4-TSE2004B1 Compliance | Factory-configured capability register and accuracy spec ensure drop-in compatibility with DDR4 SPD thermal requirements |
| Dual-Bank Software-Write-Protected EEPROM | Two independent 2-Kbit banks allow vendor data (bank 0) and runtime logs (bank 1) with separate lock control |
| User-Programmable Temperature Events | Three independent trip points (TUPPER, TLOWER, TCRIT) with hysteresis prevent false alerts during thermal transients |
| Configurable Resolution Modes | Four selectable resolutions (0.0625°C to 0.5°C) let designers trade conversion time (260 ms to 30 ms) vs. precision |
| Low-Power Shutdown Mode | 0.2 µA shutdown current preserves battery-backed systems while retaining last valid temperature reading |
Applications
| DDR4 DIMM Thermal Monitoring | Solid-State Drive (SSD) Temperature Sensing |
|---|---|
Use Scenario: Real-time ambient temperature measurement on DDR4 memory modules during boot, training, and runtime operation. IC Role / Device Role / Timing Role: SPD-integrated thermal sensor providing JEDEC-compliant temperature data to memory controller via I²C during SPD read sequence. Use Value: Enables dynamic memory throttling and thermal derating based on actual module temperature, improving reliability under sustained load. | Use Scenario: Monitoring NAND flash and controller die temperature in M.2 and U.2 SSDs to prevent thermal throttling and data retention loss. IC Role / Device Role / Timing Role: Standalone thermal monitor interfacing with SSD host controller over dedicated I²C bus, independent of main storage interface. Use Value: Delivers ±0.2°C accuracy in critical 75–95°C range where NAND endurance degrades rapidly, enabling precise thermal management. |
| Server Memory Subsystem Diagnostics | Industrial Embedded Memory Modules |
Use Scenario: Logging thermal history and detecting hotspots across multi-rank, multi-channel server DIMMs for predictive failure analysis. IC Role / Device Role / Timing Role: EEPROM-backed temperature logger storing min/max/average values and event timestamps in nonvolatile memory. Use Value: Provides traceable thermal diagnostics without requiring host CPU intervention or additional firmware overhead. | Use Scenario: Temperature-aware operation of industrial-grade DDR4 SO-DIMMs in extended-temperature (-40°C to +125°C) embedded controllers. IC Role / Device Role / Timing Role: High-accuracy sensor with guaranteed ±1°C max error over full -40°C to +125°C range, supporting wide-temperature qualification. Use Value: Ensures memory stability and timing margin compliance in harsh environments such as transportation or energy infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature sensor with SPD EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT30TS74-MA8Y | 2 Kbit EEPROM (half capacity); ±0.5°C accuracy over full range; no TCRIT register | Limited to basic SPD storage; lacks critical trip and dual-bank protection needed for advanced thermal logging | Select when cost sensitivity outweighs JEDEC Grade B accuracy and EEPROM flexibility requirements |
| LM75BIMM/NOPB | No EEPROM; ±2°C accuracy; only TOS and THYST registers; no JEDEC compliance | Requires external EEPROM and firmware logic for SPD functionality; not suitable for DDR4 SPD integration | Choose only for generic board-level thermal monitoring where SPD compliance and embedded storage are unnecessary |
Compared with AT30TS74-MA8Y and LM75BIMM/NOPB, the MCP98244T-BE/MNYAB uniquely combines JEDEC JC42.4 compliance, 4 Kbit dual-bank EEPROM with software write protection, and ±0.2°C accuracy in the DIMM-critical 75–95°C band-making it the only direct solution for DDR4 SPD thermal sensing without external components or firmware extensions.
Availability
MCP98244T-BE/MNYAB is available at Aetrix Electronics and suitable for DDR4 DIMM manufacturing, SSD thermal management, and industrial memory module design requiring stable component supply, JEDEC-compliant accuracy, and integrated SPD EEPROM.
Supply support for MCP98244T-BE/MNYAB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog, and Flash-IP solutions, serving automotive, industrial, communications, and computing markets with high-reliability silicon and development tools.
The MCP98244 product line was designed specifically for JEDEC-compliant Serial Presence Detect in DDR4 memory modules, integrating precision temperature sensing and SPD EEPROM into a single TDFN package to eliminate discrete component count and layout complexity.
FAQ
What is the primary JEDEC specification met by the MCP98244T-BE/MNYAB?
The MCP98244T-BE/MNYAB meets JEDEC JC42.4-TSE2004B1 for memory module thermal sensors. This includes Grade B accuracy (±0.2°C typical from +75°C to +95°C), I²C interface timing compliance, and mandatory register structure for SPD integration. The device's capability register is factory-configured to signal full JC42.4 compliance, making MCP98244T-BE/MNYAB suitable for DDR4 DIMM qualification without modification.
How does the EEPROM in MCP98244T-BE/MNYAB support Serial Presence Detect functionality?
The MCP98244T-BE/MNYAB contains 4 Kbit of EEPROM organized as two banks of 256 × 8-bit memory, directly supporting SPD data storage per JEDEC standards. Each 128-byte page can be individually software write-protected using the A0 pin high-voltage enable (7–10 V), allowing vendors to lock SPD configuration data while leaving space for runtime thermal logs. This eliminates need for external EEPROM in DDR4 modules.
What are the key differences between the Event output modes in MCP98244T-BE/MNYAB?
The MCP98244T-BE/MNYAB Event pin supports two configurable modes: Comparator Output (active-high or active-low) for direct connection to thermal reset circuits, and Interrupt Output for microprocessor-based polling. Mode selection is controlled via the CONFIG register's Event Mod bit. Unlike comparator mode, interrupt mode clears automatically after read of the Event Status bit, enabling edge-triggered handling in host firmware.
Can MCP98244T-BE/MNYAB operate reliably across the full DDR4 DIMM temperature range?
Yes. The MCP98244T-BE/MNYAB is specified for -40°C to +125°C ambient operation with ±1°C maximum accuracy over that full range. Its thermal response time is 0.7 s (63% in oil bath), and junction temperature is rated to +150°C. Combined with TDFN-8's 52.5°C/W θJA, MCP98244T-BE/MNYAB maintains accuracy and reliability in dense DIMM slots under sustained thermal load.
What I²C address options are available for MCP98244T-BE/MNYAB on a shared bus?
The MCP98244T-BE/MNYAB uses a 7-bit I²C address where bits A2, A1, and A0 (pins 3, 2, 1) set the LSBs. With each pin configurable as VDD (1) or GND (0), eight unique addresses (0x18–0x1F) are possible. The base address is 0x18 (A2=A1=A0=GND), and the EEPROM address space (0x50–0x57) is separate, avoiding conflict. This allows up to eight MCP98244T-BE/MNYAB devices on one I²C bus for multi-rank DIMM thermal mapping.
MCP98244T-BE/MNYAB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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), EEPROM, Register Bank
- Output Type:
- I2C
- Output Alarm:
- Yes
- Output Fan:
- Yes
- Voltage - Supply:
- 2.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
MCP98244T-BE/MNYAB FAQ
1.How can I place an order for MCP98244T-BE/MNYAB through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP98244T-BE/MNYAB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP98244T-BE/MNYAB reliable?
The price and inventory of MCP98244T-BE/MNYAB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP98244T-BE/MNYAB is usually 5 days.
3.What payment methods are accepted for MCP98244T-BE/MNYAB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP98244T-BE/MNYAB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP98244T-BE/MNYAB?
MCP98244T-BE/MNYAB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP98244T-BE/MNYAB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP98244T-BE/MNYAB?
For technical support, including MCP98244T-BE/MNYAB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP98244T-BE/MNYAB requirements.
6.How does Aetrix verify that MCP98244T-BE/MNYAB is sourced from the original manufacturer or authorized distributors?
All MCP98244T-BE/MNYAB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP98244T-BE/MNYAB meets industry standards.
7.What is the process for return or replacement of MCP98244T-BE/MNYAB?
All MCP98244T-BE/MNYAB units undergo pre-shipment inspection (PSI). If there is an issue with MCP98244T-BE/MNYAB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP98244T-BE/MNYAB part is unused and in its original packaging.
Return procedure for MCP98244T-BE/MNYAB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP98244T-BE/MNYAB Tags
-
EMC2101-ACZL-TR
Microchip Technology
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MCP9844T-BE/MNY
Microchip Technology
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EMC2101-R-ACZL-TR
Microchip Technology
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MCP98244T-BE/MNY
Microchip Technology
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TC670ECHTR
Microchip Technology
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SE98ATP,547
NXP Semiconductors
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AMC6821SDBQR
Texas Instruments
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MAX6604AATA+T
Analog Devices Inc./Maxim Integrated
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ADT7475ARQZ-REEL
onsemi
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Analog Devices Inc./Maxim Integrated
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MAX6684ESA+T
Analog Devices Inc./Maxim Integrated
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MAX6639AEE+
Analog Devices Inc./Maxim Integrated
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