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STMicroelectronics M24C32-DRMN3TP/K
- Part No.:
- M24C32-DRMN3TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C32-DRMN3TP/K.pdf
- Description:
- IC EEPROM 32KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:25,775
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Product details
Overview
M24C32-DRMN3TP/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, battery management systems, and ADAS sensors.
For engineers reviewing the M24C32-DRMN3TP/K datasheet, M24C32-DRMN3TP/K pinout, M24C32-DRMN3TP/K application, or M24C32-DRMN3TP/K equivalent, key selection criteria include automotive temperature compliance (−40 °C to +125 °C), write endurance at high temperature (600 k cycles at 125 °C), hardware write protection via WC pin, and I²C address flexibility using E2/E1/E0 inputs.
Technical Context
The M24C32-DRMN3TP/K implements a true EEPROM memory array organized as 4096 × 8 bits with built-in error correction code (ECC) logic, enabling single-bit error detection and correction per 32-byte page. Its I²C slave interface supports standard, fast, and fast-mode plus clock rates (100 kHz / 400 kHz / 1 MHz), with Schmitt-triggered SDA/SCL inputs and open-drain SDA output requiring external pull-up.
Hardware write protection is controlled by the WC pin: high disables all writes to the main memory array while still acknowledging device select and address bytes; low or floating enables byte/page/ID-page writes. Chip enable is configured via three dedicated inputs (E2, E1, E0), allowing up to eight devices on one bus with unique 3-bit addressing.
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-level write granularity. |
| I²C clock max | 1 MHz (Fast-mode Plus) - supports high-speed configuration updates in real-time automotive subsystems without bus contention. |
| Supply voltage | 1.7 V to 5.5 V - interoperable with 1.8 V, 3.3 V, and 5 V microcontrollers across power domains in vehicle ECUs. |
| Operating temp | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1, suitable for under-hood and transmission control module environments. |
| Write endurance | 600 k cycles at 125 °C - ensures reliable calibration data logging over full vehicle lifetime in high-temperature zones. |
| Data retention | 50 years at 125 °C - maintains critical safety-critical configuration data (e.g., airbag deployment thresholds) without refresh. |
| ID page | 32-byte lockable identification page - stores immutable ST device ID (bytes 0–2) and user-defined parameters, permanently read-only after lock command. |
Pinout & Package
Package: TSSOP8 (169 mil width), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | System return path for VCC; must be low-impedance connection to minimize noise coupling into I²C lines. |
| WC | Write control input | Active-low (or floating) enables writes; driven high disables all memory writes while preserving ACK on address bytes. |
| E1, E0 | Chip enable address inputs | Set 2 LSBs of 3-bit device address (with E2); tied high/low to configure unique I²C slave address on shared bus. |
| VCC | Supply voltage | 1.7–5.5 V DC input; requires local 10–100 nF decoupling capacitor adjacent to pin for stable operation during write cycles. |
| E2 | Chip enable address input | MSB of 3-bit chip enable address; combined with E1/E0, selects one of eight possible I²C addresses (1010xxxb). |
| SCL | Serial clock input | Master-generated clock signal; Schmitt-triggered for noise immunity; defines timing for SDA sampling on rising edge. |
| SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up; supports wired-AND with other I²C devices on same bus. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded ECC logic | Single-bit error detection and correction per 32-byte page - prevents silent data corruption in safety-critical automotive configurations. |
| Lockable ID page | 32-byte dedicated area with permanent read-only lock - secures ST device ID and enables tamper-resistant storage of calibration constants or security keys. |
| Hardware write protection | Dedicated WC pin with priority over I²C commands - eliminates risk of accidental writes during power transients or firmware faults. |
| ESD robustness | 4000 V HBM - withstands handling and board-level ESD events common in automotive manufacturing and service environments. |
| Multi-voltage I²C | 1.7–5.5 V VCC compatibility with 1 MHz clock - eliminates level-shifting requirements when interfacing with mixed-voltage SoCs or MCUs. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, knock sensor calibration offsets, and emission-related fault codes that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 50-year data retention at 125 °C and ECC-protected reads during runtime. Use Value: Enables closed-loop engine optimization without external backup power or refresh circuitry, reducing BOM cost and board space. | Use Scenario: Retaining camera lens distortion coefficients, radar beam alignment data, and sensor fusion bias corrections after vehicle shutdown. IC Role / Device Role / Timing Role: High-reliability configuration memory accessed via I²C at 1 MHz during boot sequence and periodic recalibration. Use Value: Eliminates need for external OTP or flash-based NVM, simplifying design while meeting ASIL-B functional safety data integrity requirements. |
| Battery Management System (BMS) | Transmission Control Module (TCM) |
Use Scenario: Logging cell balancing history, pack SOC calibration points, and thermal runaway event timestamps across 15+ year service life. IC Role / Device Role / Timing Role: Automotive-grade EEPROM with 600 k write cycles at 125 °C and hardware WC pin for fail-safe write disable during overvoltage events. Use Value: Ensures traceable battery health records compliant with UNECE R100 and OEM warranty reporting mandates. | Use Scenario: Storing gear ratio learning tables, clutch wear compensation values, and shift schedule adaptations accumulated over 300,000 km. IC Role / Device Role / Timing Role: Page-write capable EEPROM supporting burst writes during neutral-park transitions with <4 ms typical write time. Use Value: Delivers smooth shifting behavior without interrupting real-time torque control, as internal write cycle does not block I²C bus arbitration. |
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 embedded ECC, 1 million write cycles at 85 °C | Limited to under-dash modules; lacks ECC and 125 °C support required for powertrain use | Select only if operating ambient stays ≤105 °C and ECC is handled externally. |
| BR24T32FJ-WE2 | 1 MHz I²C, AEC-Q100 Grade 1, 32 Kbit, no lockable ID page, 1 million write cycles at 125 °C | Missing dedicated ID page lock mechanism; uses software write protect instead of hardware WC pin | Prefer when system-level write protection is managed by host MCU firmware rather than hardware fault isolation. |
Compared with AT24C32D-SSHM-T and BR24T32FJ-WE2, the M24C32-DRMN3TP/K uniquely combines 125 °C operation, hardware WC pin, embedded ECC, and a lockable ID page-making it the only choice for ASIL-B-compliant powertrain and chassis control modules requiring zero-failure data integrity.
Availability
M24C32-DRMN3TP/K is available at Aetrix Electronics and suitable for engine control units, battery management systems, and advanced driver assistance systems requiring stable component supply across extended automotive product lifecycles.
Supply support for M24C32-DRMN3TP/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 headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing and rigorous AEC-Q100 qualification processes.
The M24C32 series belongs to ST's automotive EEPROM product line, designed specifically for mission-critical nonvolatile storage in powertrain, chassis, and safety systems where data integrity, temperature resilience, and long-term reliability are mandatory.
FAQ
What is the function of the WC pin, and how does it differ from software write protection?
The WC (Write Control) pin is a hardware-level input that globally disables all write operations to the main memory array when driven high-regardless of I²C command validity. Unlike software write protection, which relies on correct firmware execution and can be bypassed during reset or fault conditions, WC provides fail-safe, physics-level blocking of unintended writes during power-up, brown-out, or MCU lockup scenarios.
Can the identification page be rewritten after being locked?
No-the identification page becomes permanently read-only after executing the lock identification page instruction. The lock is irreversible and implemented in hardware; no command or voltage sequence can unlock it. This ensures that ST device identification codes and critical application parameters (e.g., cryptographic keys or calibration signatures) remain tamper-proof throughout the device's operational life.
How does the embedded ECC improve reliability compared to standard EEPROMs without ECC?
The M24C32-DRMN3TP/K applies ECC logic on every 32-byte page read, detecting and correcting single-bit errors caused by radiation, voltage droop, or aging effects. This eliminates silent data corruption-unlike standard EEPROMs where undetected bit flips could lead to incorrect calibration values or safety logic failures-making it suitable for ASIL-B applications without requiring external checksum validation.
Is the M24C32-DRMN3TP/K compatible with standard I²C masters that do not support Fast-mode Plus?
Yes-it fully supports Standard-mode (100 kHz) and Fast-mode (400 kHz) I²C protocols in addition to Fast-mode Plus (1 MHz). The device automatically adapts to the master's clock frequency without configuration; no mode-setting registers or external components are needed. This ensures backward compatibility with legacy automotive MCUs while enabling higher throughput where supported.
M24C32-DRMN3TP/K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
M24C32-DRMN3TP/K FAQ
1.How can I place an order for M24C32-DRMN3TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C32-DRMN3TP/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-DRMN3TP/K reliable?
The price and inventory of M24C32-DRMN3TP/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-DRMN3TP/K is usually 5 days.
3.What payment methods are accepted for M24C32-DRMN3TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C32-DRMN3TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C32-DRMN3TP/K?
M24C32-DRMN3TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C32-DRMN3TP/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-DRMN3TP/K?
For technical support, including M24C32-DRMN3TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C32-DRMN3TP/K requirements.
6.How does Aetrix verify that M24C32-DRMN3TP/K is sourced from the original manufacturer or authorized distributors?
All M24C32-DRMN3TP/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-DRMN3TP/K meets industry standards.
7.What is the process for return or replacement of M24C32-DRMN3TP/K?
All M24C32-DRMN3TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C32-DRMN3TP/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-DRMN3TP/K part is unused and in its original packaging.
Return procedure for M24C32-DRMN3TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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