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STMicroelectronics M24C64-DRDW3TP/K
- Part No.:
- M24C64-DRDW3TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C64-DRDW3TP/K.pdf
- Description:
- IC EEPROM 64KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,875
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Product details
Overview
M24C64-DRDW3TP/K from STMicroelectronics is an AEC-Q100 Grade 1 automotive serial EEPROM delivering 64 Kbit (8 Kbyte) nonvolatile storage via I²C interface at up to 1 MHz clock rate, with 32-byte page architecture, integrated ECC for data integrity, and a dedicated 32-byte lockable identification page - deployed in engine control units, ADAS sensor modules, and battery management systems.
For engineers reviewing the M24C64-DRDW3TP/K datasheet, M24C64-DRDW3TP/K pinout, M24C64-DRDW3TP/K application, or M24C64-DRDW3TP/K equivalent, key selection criteria include its -40 °C to +125 °C operating range, 1.7–5.5 V supply tolerance, 4 ms write cycle time, 4 million write cycles at 25 °C, and TSSOP8 (DW) RoHS-compliant package with Schmitt-trigger noise filtering.
Technical Context
The device implements a true EEPROM memory array organized as 256 pages × 32 bytes, with hardware-assisted Error Correction Code logic applied across all user memory to detect and correct single-bit errors during read operations. Its I²C slave protocol fully supports standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes, including START/STOP detection, ACK/NACK handshaking, and 7-bit addressing with three Chip Enable inputs (E2/E1/E0) for multi-device bus configuration.
It features dual operational domains: main memory access using device type identifier 1010b, and separate identification page access using 1011b - enabling secure storage of manufacturer ID (0x20, 0xE0, 0x0D) and application-specific parameters, both individually writable and permanently lockable via WC pin assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8 Kbyte), organized as 256 × 32-byte pages - enables efficient block-level firmware parameter storage with minimal bus overhead. |
| I²C clock max | 1 MHz - supports high-speed configuration updates in real-time automotive subsystems without CPU polling delays. |
| Operating voltage | 1.7 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains and resilient to automotive battery transients. |
| Temperature range | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Write endurance | 4 million cycles at 25 °C - ensures >10-year reliability for infrequent calibration data logging in vehicle ECUs. |
| Data retention | 50 years at 125 °C - guarantees persistent storage of safety-critical configuration data over full vehicle lifecycle. |
| ESD protection | 4000 V HBM - withstands handling and board-level ESD events in manufacturing and field service environments. |
Pinout & Package
Package: TSSOP8 (DW), 3 mm × 4.4 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 slave address (b2–b0) for multi-device I²C bus; floating defaults to logic low (0), enabling up to eight devices on one bus. |
| SDA | Serial Data bidirectional line | Open-drain I/O requiring external pull-up; carries address, command, and data bits with ACK/NACK signaling per I²C spec. |
| SCL | Serial Clock input | Master-generated clock synchronizing all data transfers; includes Schmitt trigger for robust noise immunity on noisy automotive buses. |
| WC | Write Control input | Hardware write-protection: high = entire memory locked (including identification page); low or floating = write enabled. |
| VCC | Supply voltage | Accepts 1.7–5.5 V; internal charge pump enables reliable EEPROM programming across full voltage range. |
| VSS | Ground reference | System ground return path; must be low-impedance to maintain noise margin during high-speed I²C transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated identification page | 32-byte reserved area with factory-programmed ST device ID (0x20, 0xE0, 0x0D) and user-writable fields, lockable to prevent accidental overwrite. |
| Embedded ECC logic | On-the-fly single-bit error correction across full 64 Kbit array - eliminates need for external software CRC or redundancy schemes. |
| Fast write timing | ≤4 ms byte or page write time - reduces bus occupation and enables deterministic response in time-critical diagnostic routines. |
| Extended voltage operation | 1.7 V minimum VCC - supports direct connection to low-voltage MCUs and operation during cold-crank battery dips. |
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for sustained operation at 125 °C ambient with full parametric performance guaranteed. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and OBD-II diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced directly to the ECU's MCU via I²C, with write operations triggered by CAN message acknowledgments. Use Value: Guarantees 50-year data retention at 125 °C under hood, eliminating backup capacitor dependency and reducing BOM cost versus FRAM alternatives. | Use Scenario: Holding camera calibration coefficients, radar beamforming parameters, and sensor fusion metadata in surround-view and lane-departure modules. IC Role / Device Role / Timing Role: Secure parameter storage with lockable identification page used to store ST-manufactured device authenticity tokens and OEM-specific tuning keys. Use Value: Enables cryptographic binding between sensor hardware and host processor via immutable device ID, satisfying ISO/SAE 21434 cybersecurity requirements. |
| Battery Management System (BMS) | Electric Power Steering (EPS) |
Use Scenario: Recording cell balancing history, thermal derating logs, and SOC/SOH calibration offsets across 1000+ charge cycles. IC Role / Device Role / Timing Role: High-reliability data logger synchronized to BMS MCU's low-power sleep/wake cycles, leveraging 1.7 V operation to remain functional during deep discharge states. Use Value: Achieves 4 million write cycles at 25 °C - sufficient for >20 years of daily logging at 500 entries/day, exceeding ASIL-B functional safety targets. | Use Scenario: Storing torque sensor zero-point offsets, motor phase alignment data, and fault recovery state machines in steer-by-wire actuators. IC Role / Device Role / Timing Role: Safety-critical configuration memory accessed during EPS boot sequence; WC pin tied to MCU GPIO to enforce write-lock during normal operation. Use Value: Prevents runtime corruption of steering calibration data via hardware-level write inhibition - a deterministic fail-safe not achievable with software-only locks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T | Same 64 Kbit capacity and I²C interface, but rated only to 85 °C and lacks AEC-Q100 qualification; no identification page or embedded ECC. | Restricted to cabin electronics or non-safety-critical infotainment modules; unsuitable for powertrain or ADAS deployment. | Select only for cost-sensitive consumer-grade designs where extended temperature and automotive reliability are not required. |
| BR24G64FJ-3GE2 | 64 Kbit I²C EEPROM with 125 °C rating and AEC-Q100 Grade 2 qualification; no identification page; write endurance 1 million cycles at 125 °C. | Valid for under-dash modules but not under-hood due to Grade 2 (−40 °C to +105 °C) limit; lacks ECC and lockable ID page. | Choose when Grade 1 is unnecessary and lower write endurance suffices - e.g., dashboard display configuration storage. |
Compared with AT24C64D-SSHM-T and BR24G64FJ-3GE2, the M24C64-DRDW3TP/K uniquely delivers AEC-Q100 Grade 1 compliance, embedded ECC, and a lockable identification page - making it the only option qualified for ASIL-B–related functions in engine, transmission, and ADAS control units.
Availability
M24C64-DRDW3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, battery management systems, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for M24C64-DRDW3TP/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 designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.
The M24C64-A125 belongs to ST's automotive-grade serial EEPROM product line, engineered specifically for mission-critical data storage in harsh-temperature environments where reliability, longevity, and security outweigh raw speed or density.
FAQ
What is the function of the WC pin on the M24C64-DRDW3TP/K?
The WC (Write Control) pin provides hardware-level write protection: when driven high, it disables all write operations to both main memory and the identification page. When low or floating, writes are enabled. This allows deterministic, glitch-immune locking independent of firmware state - critical for preventing corruption during power transients in automotive systems.
Does the M24C64-DRDW3TP/K support 1 MHz I²C communication in all voltage ranges?
Yes - the device supports 1 MHz I²C operation across its full 1.7 V to 5.5 V supply range, verified per AC characteristics in Table 12 of the datasheet. At 1.7 V, timing margins remain compliant with fast-plus mode specifications, enabling high-speed configuration updates even during low-voltage battery conditions.
How is the identification page secured against unauthorized modification?
The identification page can be permanently locked in read-only mode via a dedicated "Lock Identification Page" instruction. Once locked, no further writes - including erase or reprogramming - are possible, even if WC is later pulled low. Lock status is readable via "Read the lock status" command, providing verifiable immutability for security-critical use cases.
Can the M24C64-DRDW3TP/K be used in systems without an I²C master controller?
No - the device operates exclusively as an I²C slave and requires an external master (e.g., MCU, SoC, or dedicated I²C controller) to initiate START/STOP conditions, generate SCL, and manage addressing and ACK/NACK. It contains no internal clock generator or master logic and cannot autonomously drive the bus.
M24C64-DRDW3TP/K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K 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-TSSOP
M24C64-DRDW3TP/K FAQ
1.How can I place an order for M24C64-DRDW3TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C64-DRDW3TP/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 M24C64-DRDW3TP/K reliable?
The price and inventory of M24C64-DRDW3TP/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C64-DRDW3TP/K is usually 5 days.
3.What payment methods are accepted for M24C64-DRDW3TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C64-DRDW3TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C64-DRDW3TP/K?
M24C64-DRDW3TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C64-DRDW3TP/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 M24C64-DRDW3TP/K?
For technical support, including M24C64-DRDW3TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C64-DRDW3TP/K requirements.
6.How does Aetrix verify that M24C64-DRDW3TP/K is sourced from the original manufacturer or authorized distributors?
All M24C64-DRDW3TP/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 M24C64-DRDW3TP/K meets industry standards.
7.What is the process for return or replacement of M24C64-DRDW3TP/K?
All M24C64-DRDW3TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C64-DRDW3TP/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 M24C64-DRDW3TP/K part is unused and in its original packaging.
Return procedure for M24C64-DRDW3TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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