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STMicroelectronics M24C02-WDW6TP
- Part No.:
- M24C02-WDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C02-WDW6TP.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:19,144
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Product details
Overview
M24C02-WDW6TP from STMicroelectronics is a 2-Kbit (256-byte) I²C-compatible serial EEPROM organized as 256 × 8 bits, operating as a slave device on standard and fast-mode I²C buses (up to 400 kHz), with 16-byte page write capability, 2.5 V to 5.5 V supply voltage range, and hardware write protection via WC pin - used for nonvolatile parameter storage in industrial control modules, sensor calibration registers, and power-management configuration memory.
For engineers reviewing the M24C02-WDW6TP datasheet, M24C02-WDW6TP pinout, M24C02-WDW6TP application, or M24C02-WDW6TP equivalent, key selection criteria include guaranteed 4 million write cycles, 200-year data retention at 55 °C, TSSOP8 (DW) 169-mil package compatibility, and deterministic WC-controlled full-array write inhibition - critical for firmware-safe field updates and brown-out-resilient configuration backup.
Technical Context
The M24C02-WDW6TP implements a synchronous I²C slave interface with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment. It uses an on-chip high-voltage generator for EEPROM cell programming and includes a power-on-reset (POR) circuit that prevents spurious writes during VCC ramp-up.
It supports three read modes - random, current-address, and sequential - and two write modes - byte and page - with automatic page boundary roll-over. The WC pin provides hardware-level write lock independent of I²C command flow, and E0–E2 pins enable up to eight device addresses on a shared bus (not connected in DFN5 variants, but fully functional in TSSOP8).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8 bits), sufficient for storing calibration coefficients, device IDs, or boot configuration flags in space-constrained designs. |
| I²C clock frequency | Up to 400 kHz (Fast mode), enabling sub-10 ms full-page writes and supporting real-time parameter updates in microcontroller-based systems. |
| Supply voltage range | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level-shifting, simplifying integration into mixed-voltage embedded platforms. |
| Write endurance | 4 million write cycles at 25 °C - ensures reliable operation over 10+ years of daily reconfiguration in industrial logging or telemetry applications. |
| Data retention | 200 years at 55 °C - guarantees long-term integrity of stored settings even in thermally stressed environments like motor drives or power supplies. |
| Operating temperature | −40 °C to +85 °C - qualified for use in automotive body electronics, industrial PLCs, and outdoor IoT edge nodes without derating. |
| Page size | 16 bytes - matches typical MCU cache line sizes and enables efficient bulk parameter writes while minimizing bus occupancy time. |
Pinout & Package
Package: TSSOP8 (DW), 169-mil width, RoHS-compliant and halogen-free (ECOPACK2). Pin 1 identified by notch or dot marking; lead finish: matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal logic and I/O; must be low-impedance and decoupled near package with 10–100 nF capacitor. |
| WC | Hardware write control | Active-high lock: when driven high, disables all write operations (byte/page) across entire memory array - no software dependency required. |
| E1 | Chip enable bit 1 | Part of 3-bit device address (b2); tied high/low to select one of eight possible I²C addresses (1010xxxR/W) on shared bus. |
| E0 | Chip enable bit 0 | Part of 3-bit device address (b1); enables multi-device topology without external address decoding logic. |
| VCC | Power supply | Supplies core logic and EEPROM programming circuitry; requires stable DC within 2.5–5.5 V; POR active below reset threshold. |
| E2 | Chip enable bit 2 | Part of 3-bit device address (b3); allows up to eight M24C02-WDW6TP devices on same I²C bus with unique addressing. |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; open-drain compatible; rise/fall time ≤50 ns under 100 pF load. |
| SDA | Serial data bidirectional | Open-drain I/O requiring external pull-up; transmits/receives device select code, address, and data; supports wired-AND bus sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection (WC) | Physically blocks all write commands regardless of I²C state - eliminates risk of accidental overwrite during firmware updates or power faults. |
| 16-byte page write | Reduces I²C transaction overhead by up to 94% vs. byte writes for contiguous data blocks (e.g., sensor calibration tables), improving system responsiveness. |
| 4 million write cycles | Enables daily reprogramming for >10 years in field-deployed equipment - validated at 25 °C and derated to 1.2M cycles at 85 °C. |
| 200-year data retention | Ensures configuration persistence across product lifetime without battery backup - verified at 55 °C per JEDEC JESD22-A117. |
| I²C Fast Mode (400 kHz) | Supports <2.5 ms full-memory writes (256 bytes @ 16-byte pages), meeting real-time constraints in motor control and power conversion systems. |
Applications
| Industrial Sensor Node | Smart Power Supply |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain values and temperature compensation coefficients for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at power-up and during self-test routines via I²C. Use Value: Eliminates need for external trimming components and enables field recalibration without hardware modification. |
Use Scenario: Holding output voltage/current setpoints, protection thresholds, and fault log history in digitally controlled AC/DC converters. IC Role / Device Role / Timing Role: Persistent parameter store updated only during maintenance mode; WC pin held high during normal operation. Use Value: Prevents corruption during brown-out events or firmware crashes - ensuring safe restart with last-known-good settings. |
| Automotive Body Control Module | Medical Diagnostic Instrument |
|
Use Scenario: Retaining user preferences (mirror position, seat memory), door lock status, and diagnostic trouble codes (DTCs) across ignition cycles. IC Role / Device Role / Timing Role: I²C slave with guaranteed −40 °C to +85 °C operation; addressed using E0–E2 pins to avoid bus conflicts with other ECUs. Use Value: Meets AEC-Q100 stress test requirements for reliability and supports fail-safe restore of critical vehicle settings. |
Use Scenario: Archiving calibration constants for precision ADCs/DACs and audit-trail timestamps for regulatory compliance (FDA 21 CFR Part 11). IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware write lock (WC) enabled during measurement acquisition phase. Use Value: Provides immutable record of instrument configuration - satisfying traceability and data integrity mandates for Class II devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T (Microchip) | Same 2-Kbit capacity and TSSOP8 package, but operates down to 1.7 V and lacks WC pin - relies on software write protection. | No hardware-level write lock; requires firmware coordination to prevent concurrent access - less robust in multi-master or crash-prone systems. | Select when ultra-low-voltage operation (1.7 V) is mandatory and system-level write control is already implemented in software. |
| BR24G02FJ-WE2 (ROHM) | 2-Kbit I²C EEPROM in TSSOP8 with WC pin, but rated only to 1 million write cycles and 100-year retention at 85 °C. | Lower endurance and retention limit restrict use in long-lifecycle infrastructure or medical equipment requiring >15-year data integrity. | Prefer for cost-sensitive consumer applications where 1M-cycle lifetime aligns with expected product service life. |
Compared with AT24C02D-SSHM-T and BR24G02FJ-WE2, the M24C02-WDW6TP uniquely combines hardware write protection, 4M-cycle endurance, and 200-year retention - making it optimal for safety-critical, long-service-life, or firmware-untrusted environments.
Availability
M24C02-WDW6TP is available at Aetrix Electronics and suitable for industrial sensor nodes, smart power supplies, automotive body control modules, and medical diagnostic instruments requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for M24C02-WDW6TP 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 industrial, automotive, and consumer markets.
The M24C02-WDW6TP belongs to ST's M24C serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in harsh environments - emphasizing reliability, extended data retention, and hardware-assisted security.
FAQ
Does M24C02-WDW6TP support I²C clock stretching?
No, the M24C02-WDW6TP does not implement clock stretching. It completes internal write cycles autonomously and responds to I²C START conditions only after tW (max 5 ms) has elapsed. Bus masters must poll the ACK bit or wait the worst-case write time before issuing subsequent commands.
What happens if the WC pin is left floating?
When WC is left floating, the internal pull-down resistor activates and interprets it as logic low - enabling write operations. For guaranteed protection, WC must be actively driven high (e.g., via GPIO or dedicated control net), not left unconnected.
Can M24C02-WDW6TP be used with 1.8 V I²C buses?
No - the M24C02-WDW6TP variant is specified for 2.5 V to 5.5 V operation. For 1.8 V systems, ST offers the M24C02-R series (1.8 V to 5.5 V), which shares identical pinout and functionality but different voltage qualification.
Is the TSSOP8 (DW) package pin-to-pin compatible with SO8N (MN)?
Yes - both TSSOP8 (DW) and SO8N (MN) packages use identical 8-pin layout and signal mapping (VSS, WC, E1, E0, VCC, E2, SCL, SDA), enabling direct PCB footprint reuse. Mechanical dimensions differ, but electrical and functional behavior is identical.
M24C02-WDW6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
M24C02-WDW6TP FAQ
1.How can I place an order for M24C02-WDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C02-WDW6TP 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 M24C02-WDW6TP reliable?
The price and inventory of M24C02-WDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C02-WDW6TP is usually 5 days.
3.What payment methods are accepted for M24C02-WDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C02-WDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C02-WDW6TP?
M24C02-WDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C02-WDW6TP 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 M24C02-WDW6TP?
For technical support, including M24C02-WDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C02-WDW6TP requirements.
6.How does Aetrix verify that M24C02-WDW6TP is sourced from the original manufacturer or authorized distributors?
All M24C02-WDW6TP 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 M24C02-WDW6TP meets industry standards.
7.What is the process for return or replacement of M24C02-WDW6TP?
All M24C02-WDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C02-WDW6TP, 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 M24C02-WDW6TP part is unused and in its original packaging.
Return procedure for M24C02-WDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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