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Home > Products > Integrated Circuits (ICs) > Memory > Memory

STMicroelectronics M24C32-DRDW3TP/K

Name: M24C32-DRDW3TP/K
Brand: STMicroelectronics
SKU: M24C32-DRDW3TP/K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M24C32-DRDW3TP/K

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: M24C32-DRDW3TP/K.pdf

Description:: IC EEPROM 32KBIT I2C 1MHZ 8TSSOP

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Product details

Overview

M24C32-DRDW3TP/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, ADAS sensors, and battery management systems.

For engineers reviewing the M24C32-DRDW3TP/K datasheet, M24C32-DRDW3TP/K pinout, M24C32-DRDW3TP/K application, or M24C32-DRDW3TP/K equivalent, key selection criteria include automotive temperature compliance (−40 °C to +125 °C), write endurance at elevated temperature (600 k cycles at 125 °C), 4 ms typical byte/page write time, hardware write protection via WC pin, and TSSOP8 package compatibility with board-level space constraints.

Technical Context

The M24C32-DRDW3TP/K implements a true EEPROM memory array organized as 4096 × 8 bits with built-in error correction code (ECC) logic to detect and correct single-bit errors during read operations. Its I²C slave interface supports full protocol compliance-including START/STOP detection, ACK/NACK handshaking, and 7-bit device addressing with three chip-enable inputs (E2–E0) enabling up to eight devices on one bus.

It integrates a high-voltage generator and sequencer for internal write operations, Schmitt-triggered SCL/SDA inputs for noise immunity, and a dedicated identification page with permanent lock capability. The WC pin provides hardware-level write inhibition independent of software commands, ensuring robust protection against unintended writes during power transients or firmware faults.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	32 Kbit (4 Kbyte), organized as 128 pages × 32 bytes - enables efficient block-based firmware parameter storage with minimal address overhead.
I²C speed	Up to 1 MHz (Fast-mode Plus) - supports high-throughput calibration data logging in real-time automotive subsystems.
Supply voltage	1.7 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level-shifting.
Operating temp	−40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications.
Write endurance	600 k cycles at 125 °C - ensures reliable lifetime performance in high-temperature battery monitoring nodes.
Data retention	50 years at 125 °C - guarantees long-term calibration stability in sealed automotive modules with no field maintenance.
Page write time	Typical 3.1 ms, max 4 ms - enables deterministic timing budgeting for safety-critical write sequences.

Pinout & Package

Package: TSSOP8 (169 mil width), RoHS-compliant and halogen-free, with 0.65 mm pitch and exposed pad option per STMicroelectronics packaging specification.

Pin/Terminal	Circuit Role	Design Meaning
VSS	Ground reference	Return path for all internal circuitry; must be low-impedance connection to system ground plane.
WC	Hardware write control	Active-high signal disabling all memory writes - tied high for permanent protection during vehicle operation.
E1	Chip enable bit 1	Part of 3-bit device address (E2–E0); sets unique I²C address when hardwired to VCC or VSS.
E0	Chip enable bit 0	LSB of 3-bit hardware address; allows up to eight M24C32 devices on shared I²C bus without software reconfiguration.
VCC	Power supply	1.7–5.5 V input; requires local 10–100 nF decoupling capacitor adjacent to pin for noise suppression.
E2	Chip enable bit 2	MSB of hardware address; determines device select code (1010b + E2E1E0) for I²C arbitration.
SCL	Serial clock input	Master-generated clock with Schmitt trigger; defines timing for SDA sampling and ACK generation.
SDA	Serial data I/O	Open-drain bidirectional line requiring external pull-up; supports wired-AND with other I²C slaves.

Key Features

Feature	Design Value
Embedded ECC logic	Corrects single-bit errors and detects multi-bit errors in real time-eliminates need for external CRC checks in safety-critical memory reads.
Lockable ID page	32-byte dedicated area with permanent read-only lock-secures ST manufacturer code (0x20, 0xE0, 0x0C) and enables tamper-proof storage of calibration keys or VIN fragments.
Hardware write protection	WC pin disables all writes regardless of I²C command-prevents corruption during brown-out, reset, or firmware crash without software intervention.
ESD robustness	4000 V HBM rating-meets stringent automotive board-level ESD requirements without additional protection components.
Multi-temp endurance grading	Specified write cycles at 25 °C, 85 °C, and 125 °C-enables accurate lifetime modeling for thermal zones across vehicle ECUs.

Applications

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Storing adaptive fuel trim tables and misfire counters that update dynamically during engine runtime.

IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 125 °C operation and ECC-protected reads during CAN-triggered diagnostics.

Use Value: Eliminates recalibration after thermal cycling; ECC prevents silent corruption of air-fuel ratio corrections affecting emissions compliance.

Use Scenario: Retaining camera calibration offsets and radar sensor alignment data across ignition cycles.

IC Role / Device Role / Timing Role: Secure, lockable ID page stores factory-set sensor coefficients; main array logs field-updated compensation values.

Use Value: Prevents unauthorized modification of vision system parameters; hardware WC pin blocks accidental overwrites during OTA updates.

Battery Management System (BMS)

Electric Power Steering (EPS)

Use Scenario: Logging cell voltage history and thermal derating thresholds in high-temperature battery packs.

IC Role / Device Role / Timing Role: High-endurance EEPROM (600 k cycles at 125 °C) captures charge/discharge cycle metadata with deterministic 4 ms write latency.

Use Value: Enables precise SOH estimation over 15+ year pack life; 50-year data retention avoids periodic reprogramming in sealed modules.

Use Scenario: Storing torque sensor zero-point offsets and motor phase advance maps subject to vibration-induced drift.

IC Role / Device Role / Timing Role: Automotive-grade EEPROM with Schmitt-triggered I²C inputs rejects EMI from nearby motor drivers and solenoids.

Use Value: Maintains steering assist accuracy despite 10 g mechanical shock; 4000 V HBM withstands load-dump transients on 12 V rail.

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	Industrial grade (−40 °C to +85 °C), no AEC-Q100 qualification; identical 32 Kbit size and I²C interface.	Lacks automotive temperature and reliability validation; unsuitable for powertrain or ADAS.	Select only for cost-sensitive non-automotive industrial controls where 125 °C operation is unnecessary.
BR24T32FJ-WE2	Rohm's AEC-Q100 Grade 2 (−40 °C to +105 °C); same 32 Kbit density but no lockable ID page or embedded ECC.	Lower temperature ceiling and missing ECC reduce suitability for safety-critical ECU parameter storage.	Consider for body electronics or infotainment where extended temperature margin and ECC are not mandated.

Compared with AT24C32D-SSHM-T and BR24T32FJ-WE2, the M24C32-DRDW3TP/K uniquely delivers Grade 1 automotive qualification, ECC-protected reads, and a permanently lockable ID page-making it the only choice for ASIL-B–relevant memory functions in engine, battery, and steering systems.

Availability

M24C32-DRDW3TP/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 lifecycles.

Supply support for M24C32-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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.

The M24C32 series belongs to ST's automotive EEPROM product line, engineered specifically for mission-critical nonvolatile storage in harsh environments-emphasizing AEC-Q100 compliance, extended temperature operation, and hardware-level data integrity features.

FAQ

What is the function of the WC pin on the M24C32-DRDW3TP/K?

The WC (Write Control) pin is an active-high hardware protection input that disables all write operations to the entire memory array when driven high. When WC is low or floating, writes are enabled. This feature operates independently of I²C commands and remains effective during power-up, brown-out, or firmware failure-ensuring memory contents remain intact under fault conditions.

How does the identification page differ from the main memory array?

The identification page is a dedicated 32-byte region separate from the main 32-Kbit array. It contains ST's pre-programmed device ID (0x20, 0xE0, 0x0C) in the first three bytes and offers user-writable space for calibration data. Unlike the main array, it supports a permanent lock command that makes the entire page read-only-preventing overwrite of critical identifiers or security keys once programmed.

Can the M24C32-DRDW3TP/K operate reliably at 1.7 V supply?

Yes-the device is fully specified for DC and AC operation down to 1.7 V, including 1 MHz I²C communication, 4 ms write cycles, and ECC functionality. At this minimum voltage, timing margins remain compliant per DS9133 Rev 9, and the internal voltage regulator ensures stable HV generation for EEPROM programming, making it suitable for low-power automotive subsystems powered by buck-converted rails.

Is the TSSOP8 package of M24C32-DRDW3TP/K lead-free and RoHS-compliant?

Yes-the TSSOP8 package used in M24C32-DRDW3TP/K is RoHS-compliant and halogen-free per STMicroelectronics' environmental specifications. It meets JEDEC standard MS-012AC, features matte tin (Sn) lead finish, and has been qualified for solder reflow profiles up to 260 °C peak temperature-ensuring compatibility with standard automotive PCB assembly processes.

M24C32-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:: 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-TSSOP

M24C32-DRDW3TP/K FAQ

1.How can I place an order for M24C32-DRDW3TP/K through Aetrix?

Please submit a Request for Quotation (RFQ) for M24C32-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 M24C32-DRDW3TP/K reliable?

The price and inventory of M24C32-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 M24C32-DRDW3TP/K is usually 5 days.

3.What payment methods are accepted for M24C32-DRDW3TP/K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C32-DRDW3TP/K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M24C32-DRDW3TP/K?

M24C32-DRDW3TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M24C32-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 M24C32-DRDW3TP/K?

For technical support, including M24C32-DRDW3TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C32-DRDW3TP/K requirements.

6.How does Aetrix verify that M24C32-DRDW3TP/K is sourced from the original manufacturer or authorized distributors?

All M24C32-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 M24C32-DRDW3TP/K meets industry standards.

7.What is the process for return or replacement of M24C32-DRDW3TP/K?

All M24C32-DRDW3TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C32-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 M24C32-DRDW3TP/K part is unused and in its original packaging.

Return procedure for M24C32-DRDW3TP/K:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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