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STMicroelectronics M24C32-DRMN8TP/K
- Part No.:
- M24C32-DRMN8TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C32-DRMN8TP/K.pdf
- Description:
- IC EEPROM 32KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:20,332
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Product details
Overview
M24C32-DRMN8TP/K from STMicroelectronics is a 32-Kbit (4 Kbyte) I²C-compatible serial EEPROM with 32-byte page architecture, Schmitt-trigger inputs, and extended industrial temperature operation up to +105 °C. It supports 1 MHz I²C bus speed, features an additional lockable 32-byte Identification Page for device ID and application parameters, and delivers 4 million write cycles at 25 °C. It is used in automotive body control modules for storing calibration data and configuration profiles.
For engineers reviewing the M24C32-DRMN8TP/K datasheet, M24C32-DRMN8TP/K pinout, M24C32-DRMN8TP/K application, or M24C32-DRMN8TP/K equivalent, key selection criteria include I²C timing compliance at 1 MHz, -40 °C to +105 °C operating range, byte/page write latency ≤4 ms, ECC-enhanced data integrity, and hardware write protection via WC pin.
Technical Context
The M24C32-DRMN8TP/K implements a true EEPROM memory array organized as 128 pages × 32 bytes, with embedded Error Correction Code logic improving data integrity across temperature. Its I²C slave interface supports standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes, with ACK polling support to minimize write delays.
It features three Chip Enable pins (E2/E1/E0) enabling up to eight devices on one I²C bus, a dedicated Write Control (WC) input for hardware-level memory locking, and Schmitt-triggered SCL/SDA inputs for robust noise immunity in electrically noisy environments like automotive powertrain and chassis subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 32 Kbit (4 Kbytes), organized as 128 × 32-byte pages - enables efficient firmware parameter storage with minimal address overhead. |
| I²C bus speed | Up to 1 MHz - supports high-throughput configuration updates in real-time control systems without bus contention. |
| Write cycle time | ≤4 ms for byte or page write - ensures deterministic latency for safety-critical parameter commits (e.g., airbag deployment thresholds). |
| Operating voltage | 1.7 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level-shifting. |
| Temperature range | -40 °C to +105 °C - qualified per AEC-Q100 Grade 2, suitable for under-hood and cabin electronics. |
| Data retention | >50 years at 105 °C - guarantees long-term reliability of stored calibration data over vehicle lifetime. |
| Write endurance | 900 k cycles at 105 °C - validated for repeated reprogramming in adaptive systems (e.g., seat position learning). |
Pinout & Package
Package: TSSOP8 (DW), 3 mm × 6.4 mm, 0.65 mm pitch, RoHS-compliant and halogen-free (ECOPACK2®).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E2, E1, E0 | Chip Enable address inputs | Set 3-bit device select code (b2–b0); allow up to eight devices on same I²C bus; floating = logic low. |
| SDA | Serial Data bidirectional line | Open-drain I/O requiring external pull-up; supports wire-OR with other I²C slaves; carries address/data/ACK. |
| SCL | Serial Clock input | Master-generated clock; sampled on rising edge; Schmitt trigger ensures noise-immune timing in noisy environments. |
| WC | Write Control input | Hardware lock: high = full memory write-inhibited; low/floating = write enabled; critical for fail-safe configuration protection. |
| VCC | Supply voltage | 1.7–5.5 V operation; internal charge pump enables EEPROM programming across full voltage range. |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance to maintain noise margin during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Identification Page | 32-byte dedicated area with factory-programmed ST device ID (0x20, 0xE0, 0x0C) and user-writable fields - enables secure device authentication and persistent application parameter storage. |
| Hardware write lock | WC pin disables all writes when driven high - eliminates risk of accidental overwrites during firmware updates or brown-out conditions. |
| ECC logic | Embedded error correction improves bit-error resilience across temperature and voltage extremes - reduces need for external CRC checks in safety-critical applications. |
| Fast-plus I²C support | 1 MHz clock tolerance with guaranteed setup/hold times - cuts configuration time by 4× vs. 250 kHz legacy EEPROMs in telematics gateways. |
| ESD protection | 4000 V HBM - meets automotive system-level ESD requirements without external protection components. |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing seat/mirror position presets, door lock configurations, and lighting profiles across vehicle lifecycle. IC Role / Device Role / Timing Role: Nonvolatile parameter store interfaced to MCU via I²C; accessed during power-up and user adjustment events. Use Value: Retains settings through battery disconnect; 105 °C rating ensures reliability near HVAC ducts or under-dash ECUs. |
Use Scenario: Holding I/O mapping tables, PID tuning constants, and calibration offsets for modular automation controllers. IC Role / Device Role / Timing Role: Configuration EEPROM co-located with ARM Cortex-M7 host; read at boot, written during commissioning or field update. Use Value: 4 million write cycles enable daily recalibration without wear-out; 1.7 V min VCC supports brown-out safe writes during AC line dips. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
|
Use Scenario: Storing drug library metadata, flow rate limits, and alarm thresholds traceable to regulatory audit logs. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory; Identification Page stores manufacturer ID and revision hash. Use Value: Lockable Identification Page prevents unauthorized parameter modification; >50-year data retention satisfies FDA 21 CFR Part 11 archival requirements. |
Use Scenario: Maintaining tariff schedules, metering constants, and communication keys across AMI network upgrades. IC Role / Device Role / Timing Role: I²C EEPROM interfaced to metrology SoC; updated remotely via secure bootloader over PLC or RF link. Use Value: Schmitt-trigger inputs reject conducted noise from switching power supplies; ECC ensures integrity of billing-critical constants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C32D-SSHM-T (Microchip) | Same 32-Kbit capacity, 1 MHz I²C, but rated only to +85 °C; no Identification Page; 1 million write cycles at 85 °C. | Lacks AEC-Q100 qualification and lockable ID page - unsuitable for automotive under-hood use or secure device identification. | Select only for cost-sensitive industrial controls where extended temperature and ID security are not required. |
| BR24G32FJ-3GE2 (ROHM) | 32-Kbit, 1 MHz I²C, -40 °C to +105 °C, but uses different addressing scheme (no E2/E1/E0 pins); no dedicated ID page; 1.2 million write cycles at 105 °C. | Fixed I²C address (0x50–0x57) without hardware chip-select pins - limits multi-device bus scalability in complex systems. | Prefer when board space is constrained and only one EEPROM is needed; avoid when multiple devices share I²C bus. |
Compared with AT24C32D-SSHM-T and BR24G32FJ-3GE2, the M24C32-DRMN8TP/K uniquely combines AEC-Q100 Grade 2 qualification, hardware-configurable device addressing, and a lockable Identification Page - making it the only option among the three qualified for automotive safety-critical configuration storage.
Availability
M24C32-DRMN8TP/K is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature and long product lifecycles.
Supply support for M24C32-DRMN8TP/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, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.
The M24C32-DRMN8TP/K belongs to ST's automotive-grade serial EEPROM product line, engineered specifically for mission-critical data retention in harsh environments - emphasizing reliability, security, and seamless integration with automotive microcontrollers.
FAQ
What is the function of the WC pin on the M24C32-DRMN8TP/K?
The WC (Write Control) pin is a hardware-level write-protection input. When driven high, it disables all write operations to the entire memory array-including byte, page, and Identification Page writes-while still allowing reads and device addressing. This prevents accidental or malicious overwrites during power transitions or firmware updates, and is essential for functional safety compliance in automotive applications.
Does the M24C32-DRMN8TP/K support I²C clock stretching?
No, the M24C32-DRMN8TP/K does not support clock stretching. It is a pure slave device that relies on ACK polling (monitoring SDA during the 9th clock pulse) to detect write completion. The internal write cycle completes within 4 ms, and the host must either poll ACK or implement a fixed delay before initiating the next transaction.
How is the Identification Page secured against unauthorized writes?
The Identification Page can be permanently locked in read-only mode using the "Lock Identification Page" instruction (see Section 4.1.4 of the datasheet). Once locked, no further writes-including erase or overwrite-are possible, even if WC is low. The lock status can be verified via the "Read lock status" command, and the lock operation is irreversible.
Can the M24C32-DRMN8TP/K operate reliably at 1.7 V while running at 1 MHz I²C speed?
Yes. The device is fully specified for 1 MHz I²C operation across its entire 1.7 V to 5.5 V supply range. At 1.7 V, AC timing parameters-including tBUF, tHD;STA, and tSU;DAT-meet fast-plus mode requirements per I²C specification, confirmed in Table 12 of the datasheet (DocID027419 Rev 2, p.31).
M24C32-DRMN8TP/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 ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M24C32-DRMN8TP/K FAQ
1.How can I place an order for M24C32-DRMN8TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C32-DRMN8TP/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-DRMN8TP/K reliable?
The price and inventory of M24C32-DRMN8TP/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-DRMN8TP/K is usually 5 days.
3.What payment methods are accepted for M24C32-DRMN8TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C32-DRMN8TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C32-DRMN8TP/K?
M24C32-DRMN8TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C32-DRMN8TP/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-DRMN8TP/K?
For technical support, including M24C32-DRMN8TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C32-DRMN8TP/K requirements.
6.How does Aetrix verify that M24C32-DRMN8TP/K is sourced from the original manufacturer or authorized distributors?
All M24C32-DRMN8TP/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-DRMN8TP/K meets industry standards.
7.What is the process for return or replacement of M24C32-DRMN8TP/K?
All M24C32-DRMN8TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C32-DRMN8TP/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-DRMN8TP/K part is unused and in its original packaging.
Return procedure for M24C32-DRMN8TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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