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STMicroelectronics M24C32-DRMF3TG/K
- Part No.:
- M24C32-DRMF3TG/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
M24C32-DRMF3TG/K.pdf
- Description:
- IC EEPROM 32KBIT I2C 1MHZ 8MLP
- Quantity:
- Payment:
- Shipping:
Inventory:21,516
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Product details
Overview
M24C32-DRMF3TG/K from STMicroelectronics is an AEC-Q100 Grade 1 automotive-qualified 32-Kbit I²C serial EEPROM with 1 MHz Fast-mode Plus interface, 1.7–5.5 V supply range, and operation up to +125 °C. It features 128 pages × 32 bytes, a lockable 32-byte identification page, and embedded ECC for enhanced data integrity in engine control units and ADAS modules.
For engineers reviewing the M24C32-DRMF3TG/K datasheet, M24C32-DRMF3TG/K pinout, M24C32-DRMF3TG/K application, or M24C32-DRMF3TG/K equivalent, key selection criteria include automotive temperature compliance (−40 °C to +125 °C), hardware write protection via WC pin, 4 million write cycles at 25 °C, and I²C address flexibility using E2/E1/E0 pins.
Technical Context
The device implements a true EEPROM memory array organized as 4096 × 8 bits with built-in error correction code (ECC) logic, enabling robust bit-level reliability in harsh automotive environments. Its I²C slave interface supports standard, fast, and fast-mode plus speeds (100 kHz/400 kHz/1 MHz), with Schmitt-trigger inputs on SDA/SCL for noise immunity.
It includes dedicated control logic for dual-page access: main memory (device ID 1010b) and identification page (1011b), each with independent addressing and locking capability. The WC pin provides hardware-level write inhibition across the entire memory array, independent of software commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 32 Kbit (4 Kbyte), organized as 128 pages × 32 bytes - enables efficient firmware parameter storage with page-aligned writes |
| I²C speed support | Up to 1 MHz (Fast-mode Plus) - allows high-throughput configuration updates in real-time vehicle networks |
| Supply voltage | 1.7 V to 5.5 V - compatible with 3.3 V and 5 V automotive subsystems without level-shifting |
| Operating temperature | −40 °C to +125 °C - meets AEC-Q100 Grade 1 requirements for under-hood and powertrain applications |
| Write endurance | 4 million cycles at 25 °C - supports frequent calibration data logging over full vehicle lifetime |
| Data retention | 50 years at 125 °C - ensures long-term integrity of safety-critical configuration data in hot environments |
| ESD protection | 4000 V HBM - withstands electrostatic discharge during assembly and service in automotive production lines |
Pinout & Package
Package: TSSOP8 (169 mil width), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND plane |
| WC | Hardware write control | Active-high signal that disables all write operations to main memory and ID page when asserted |
| E1 | Chip enable address bit | Part of 3-bit device select code (E2/E1/E0); sets LSBs of 7-bit I²C address for multi-device bus configuration |
| E0 | Chip enable address bit | Part of 3-bit device select code; ties to VCC/VSS to assign unique I²C address among up to eight devices |
| VCC | Power supply | Accepts 1.7–5.5 V; requires local 10–100 nF decoupling capacitor near package pins |
| E2 | Chip enable address bit | MSB of 3-bit chip enable code; determines device address mapping per Table 2 in DS9133 |
| SCL | Serial clock input | Strobes data on SDA; open-drain compatible with external pull-up; supports 1 MHz timing |
| SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up resistor; wired-AND capable with other I²C slaves |
Key Features
| Feature | Design Value |
|---|---|
| Embedded ECC logic | Corrects single-bit errors and detects double-bit errors in real time - eliminates need for external checksum validation in safety-critical boot loaders |
| Lockable identification page | 32-byte dedicated area with permanent read-only lock - secures ST device ID and enables secure storage of calibration keys or VIN-linked parameters |
| Hardware write protection | WC pin disables writes regardless of I²C command - prevents accidental overwrites during power transients or firmware faults |
| Enhanced noise immunity | Schmitt-trigger inputs on SDA/SCL - rejects sub-50 ns noise spikes common in electric powertrain EMI environments |
| Multi-voltage compatibility | 1.7–5.5 V operation - interoperates with both 1.8 V microcontrollers and legacy 5 V CAN transceivers without level shifters |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim tables and misfire history logs subject to frequent updates during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed write completion under transient battery conditions. Use Value: 4 ms typical byte/page write time and POR reset ensure data integrity even during ignition cycling or load dump events. | Use Scenario: Retaining camera calibration offsets and radar sensor alignment coefficients across power cycles. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration storage with locked identification page for traceability. Use Value: Permanent ID page lock prevents unauthorized modification of safety-critical calibration data post-manufacturing. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Managing seat position memory, mirror presets, and lighting profiles tied to user credentials. IC Role / Device Role / Timing Role: High-reliability user preference storage with 125 °C rating for under-dash mounting. Use Value: 50-year data retention at 125 °C ensures settings persist over full vehicle service life without refresh. | Use Scenario: Logging torque sensor zero-point drift compensation values updated during steering column warm-up. IC Role / Device Role / Timing Role: High-endurance parameter logging with ECC-protected memory for functional safety compliance. Use Value: Embedded ECC enables ASIL-B compliant data storage without requiring redundant external verification logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C32D-SSHM-T | 1 MHz I²C, AEC-Q100 Grade 2 (−40 °C to +105 °C), no identification page or ECC | Limited to cabin modules; unsuitable for powertrain or ADAS due to lower temp rating and missing ECC | Select only for cost-sensitive non-safety applications where extended temperature and ECC are not required |
| BR24G32FJ-3GE2 | 1 MHz I²C, AEC-Q100 Grade 1, 32 Kbit, but no hardware WC pin or lockable ID page | Requires software-based write protection; lacks secure ID page for calibration traceability | Prefer when system-level write control is already implemented in MCU firmware and ID page security is unnecessary |
Compared with AT24C32D-SSHM-T and BR24G32FJ-3GE2, the M24C32-DRMF3TG/K uniquely combines AEC-Q100 Grade 1 operation, hardware WC pin, lockable ID page, and embedded ECC-making it the only option qualified for ASIL-B–related parameter storage in powertrain and ADAS systems.
Availability
M24C32-DRMF3TG/K is available at Aetrix Electronics and suitable for engine control units, ADAS sensors, body control modules, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for M24C32-DRMF3TG/K 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
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management solutions, with deep expertise in nonvolatile memory design and AEC-Q100 qualification.
The M24C32 product line delivers automotive-grade serial EEPROMs optimized for functional safety, high-temperature reliability, and robust I²C communication in mission-critical vehicle subsystems.
FAQ
What is the function of the WC pin on the M24C32-DRMF3TG/K?
The WC (Write Control) pin is an active-high hardware protection input that disables all write operations-including byte, page, and identification page writes-when driven high. Unlike software-based write protection, WC operates independently of I²C commands and remains effective during power transients, ensuring memory contents cannot be altered unintentionally during brown-out or reset conditions.
How does the identification page differ from the main memory array?
The identification page is a dedicated 32-byte region accessible via I²C device type identifier 1011b, separate from the main 32-Kbit memory (1010b). It contains factory-programmed ST device codes (bytes 0–2) and user-writable space (bytes 3–31), which can be permanently locked in read-only mode using the lock ID instruction-providing secure, tamper-evident storage for calibration data or VIN-linked parameters.
Can the M24C32-DRMF3TG/K operate reliably at 1.7 V supply?
Yes-the device is fully specified for DC and AC parameters down to 1.7 V, including 1 MHz I²C operation, 4 ms write cycle time, and −40 °C to +125 °C functionality. Internal voltage regulation and Schmitt-trigger inputs maintain timing margins and noise immunity across the full 1.7–5.5 V range, making it suitable for low-voltage automotive domains such as always-on telematics modules.
Is ECC applied to both main memory and the identification page?
Yes-embedded ECC logic covers the entire 32-Kbit main memory array (128 pages × 32 bytes) and the 32-byte identification page. It provides single-bit error correction and double-bit error detection for all stored data, ensuring bit-level integrity without requiring host MCU intervention-critical for ISO 26262 ASIL-B compliance in safety-related vehicle functions.
M24C32-DRMF3TG/K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLP (2x3)
M24C32-DRMF3TG/K FAQ
1.How can I place an order for M24C32-DRMF3TG/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C32-DRMF3TG/K 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 M24C32-DRMF3TG/K reliable?
The price and inventory of M24C32-DRMF3TG/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C32-DRMF3TG/K is usually 5 days.
3.What payment methods are accepted for M24C32-DRMF3TG/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C32-DRMF3TG/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C32-DRMF3TG/K?
M24C32-DRMF3TG/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C32-DRMF3TG/K 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 M24C32-DRMF3TG/K?
For technical support, including M24C32-DRMF3TG/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C32-DRMF3TG/K requirements.
6.How does Aetrix verify that M24C32-DRMF3TG/K is sourced from the original manufacturer or authorized distributors?
All M24C32-DRMF3TG/K 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 M24C32-DRMF3TG/K meets industry standards.
7.What is the process for return or replacement of M24C32-DRMF3TG/K?
All M24C32-DRMF3TG/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C32-DRMF3TG/K, 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 M24C32-DRMF3TG/K part is unused and in its original packaging.
Return procedure for M24C32-DRMF3TG/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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