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STMicroelectronics M24C02-RDW6TP
- Part No.:
- M24C02-RDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C02-RDW6TP.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,851
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Product details
Overview
M24C02-RDW6TP 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 1.8 V to 5.5 V supply range, 16-byte page write capability, and hardware write protection via WC pin. It is used for nonvolatile parameter storage in embedded control modules requiring low-voltage operation and industrial temperature resilience.
For engineers reviewing the M24C02-RDW6TP datasheet, M24C02-RDW6TP pinout, M24C02-RDW6TP application, or M24C02-RDW6TP equivalent, key selection criteria include I²C voltage compatibility (1.8 V min), page-write timing (≤5 ms), hardware write-protection behavior, and DFN5 package footprint constraints - especially E0–E2 pin absence and address fixed to 1010000x.
Technical Context
The M24C02-RDW6TP implements a synchronous I²C slave interface with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment. Its memory array uses floating-gate EEPROM technology with charge-pump-based write cycling and built-in power-on reset (POR) to prevent spurious writes during power ramp.
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 inhibition across the full 256-byte array, independent of I²C command execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2-Kbit (256 × 8-bit) EEPROM array - sufficient for firmware configuration, calibration data, or device identity storage in space-constrained designs. |
| I²C clock frequency | Up to 400 kHz (Fast mode) - enables high-throughput parameter updates without requiring MCU clock stretching or custom bit-banging. |
| Supply voltage range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Page write size | 16 bytes per write cycle - reduces I²C transaction overhead when updating contiguous configuration blocks (e.g., sensor offset tables). |
| Write endurance | 4 million write cycles at 25 °C - ensures reliable field recalibration over product lifetime in industrial monitoring systems. |
| Data retention | 200 years at 55 °C - guarantees long-term integrity of stored calibration coefficients or security keys without refresh. |
| Operating temperature | −40 °C to +85 °C - qualified for use in automotive body controllers, smart meters, and industrial PLC I/O modules. |
| ESD rating | ±3 kV HBM - meets IEC 61000-4-2 Level 3 requirements for robustness in noisy factory-floor environments. |
Pinout & Package
Package: UFDFPN5 (DFN5), 1.7 mm × 1.4 mm, 0.4 mm pitch, RoHS-compliant and halogen-free (ECOPACK2). Pin 1 marked by top-side laser etch; no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SDA | Serial Data I/O | Open-drain bidirectional bus line - requires external pull-up (typically 2.2–10 kΩ to VCC); shares bus with other I²C slaves. |
| 2: SCL | Serial Clock Input | Master-generated clock signal - determines maximum data rate (≤400 kHz); edge-triggered sampling on rising edge. |
| 3: WC | Write Control Input | Active-high hardware lock - disables all write operations (byte/page) when driven high; floating or low enables writes. |
| 4: VCC | Supply Voltage | 1.8–5.5 V DC input - must be stable before I²C communication; decoupling capacitor (10–100 nF) required near pins 4/5. |
| 5: VSS | Ground Reference | 0 V return path for all signals and internal circuitry - must be low-impedance and tied directly to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables entire memory array from writes - eliminates risk of accidental overwrites during firmware updates or brown-out conditions. |
| Fixed I²C address in DFN5 | E0–E2 pins unconnected; device address permanently set to 1010000x - simplifies bus arbitration but requires unique address planning on shared I²C segments. |
| Page write with roll-over | Up to 16 bytes written per STOP-triggered cycle; exceeding page boundary wraps to start of same page - avoids software address wrap logic in host firmware. |
| Polling-ready ACK response | Bus master can detect write completion by reissuing START + device address - eliminates need for fixed tW delays (max 5 ms) and improves real-time responsiveness. |
| Power-on reset (POR) | Internal POR circuit holds device inactive until VCC exceeds threshold - prevents spurious writes or invalid reads during power ramp-up or glitch events. |
Applications
| Smart Energy Metering | Automotive Body Control Module |
|---|---|
|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration store interfaced to an ARM Cortex-M0+ MCU via I²C at 100 kHz. Use Value: 1.8 V operation allows direct connection to 1.8 V MCU I/O banks; 200-year data retention ensures log integrity over meter lifetime without backup battery. |
Use Scenario: Holding seat position presets, mirror angle offsets, and user preference profiles in door module ECUs. IC Role / Device Role / Timing Role: Slave EEPROM on vehicle chassis I²C bus, accessed during ignition-on initialization and runtime updates. Use Value: −40 °C to +85 °C rating matches under-hood ambient specs; hardware WC pin prevents corruption during CAN-induced power transients. |
| Industrial Sensor Transmitter | Medical Infusion Pump Controller |
|
Use Scenario: Saving sensor linearization coefficients, zero-point drift compensation, and factory calibration data. IC Role / Device Role / Timing Role: I²C-configurable memory co-located with analog front-end ASIC on 4–20 mA loop-powered board. Use Value: 16-byte page writes reduce I²C traffic when loading multi-parameter calibration sets; 4M-cycle endurance supports field recalibration every 6 months for 20+ years. |
Use Scenario: Securing drug library parameters, dose limit settings, and operator audit trails in safety-critical delivery systems. IC Role / Device Role / Timing Role: Isolated EEPROM on microcontroller's secondary I²C bus, accessed only during setup mode with WC pin monitored. Use Value: Hardware write lock (WC) enforces dual-control policy - writes require both firmware enable and physical signal assertion, satisfying IEC 62304 Class C requirements. |
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, 1.7–5.5 V range, but uses 1.7 V min (not 1.8 V); lacks WC pin - write protection relies on software address locking. | No hardware lockout - unsuitable where fail-safe write prevention is mandated (e.g., medical or functional-safety systems). | Select if cost sensitivity outweighs need for hardware write disable; verify I²C timing margins at 1.7 V. |
| BR24G02FJ-3GE2 (ROHM) | 2-Kbit, 1.6–5.5 V, includes WC pin and identical DFN5 footprint; but max clock is 1 MHz (vs. 400 kHz), and endurance is 1M cycles (vs. 4M). | Higher speed enables faster boot-time config load; lower endurance may constrain frequent recalibration use cases. | Prefer for high-throughput logging; confirm WC pin behavior matches ST's active-high logic and timing during power transitions. |
Compared with AT24C02D-SSHM-T and BR24G02FJ-3GE2, the M24C02-RDW6TP uniquely balances 1.8 V compatibility, 4M-cycle endurance, and hardware WC lock - making it optimal for industrial and automotive applications where reliability under voltage stress and deterministic write prevention are critical.
Availability
M24C02-RDW6TP is available at Aetrix Electronics and suitable for smart metering, automotive body electronics, industrial sensor calibration, and medical device configuration storage requiring stable component supply across multi-year production cycles.
Supply support for M24C02-RDW6TP 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-RDW6TP belongs to ST's M24Cxx family of I²C EEPROMs, engineered specifically for robust, low-voltage, high-reliability nonvolatile storage in space- and power-constrained embedded systems.
FAQ
What is the function of the WC pin on the M24C02-RDW6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations - including byte and page writes - across the entire 256-byte memory array. When driven high, the device acknowledges device select and address bytes but returns NACK on data bytes, preventing unintended modifications. It remains effective regardless of I²C command state or power-ramp conditions, and is essential for fail-safe configuration storage in safety-critical systems.
Does the M24C02-RDW6TP support standard and fast-mode I²C speeds?
Yes, the M24C02-RDW6TP supports both standard-mode (100 kHz) and fast-mode (400 kHz) I²C operation. Its AC characteristics are fully characterized up to 400 kHz under all valid VCC and temperature conditions. No external speed-select resistors or configuration registers are needed - the device automatically adapts to the SCL clock frequency provided by the bus master.
How does the DFN5 package affect device addressing?
In the UFDFPN5 (DFN5) package, pins E0–E2 are not connected, fixing the device address to 1010000x (where x = R/W bit). This eliminates external address strapping but requires careful bus topology planning - no other I²C device on the same segment may use addresses 10100000 or 10100001. Address conflict detection must occur at system integration, not at runtime.
Can the M24C02-RDW6TP be used below 1.8 V?
No - the "R" suffix denotes the 1.8 V to 5.5 V operating range. While the M24C02-F variant supports 1.6 V under restricted temperature conditions (0 °C to 85 °C for writes), the M24C02-RDW6TP is rated only down to 1.8 V across its full −40 °C to +85 °C range. Operation below 1.8 V risks incomplete write cycles, data corruption, or loss of I²C acknowledgment, and is outside specification.
M24C02-RDW6TP 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:
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
M24C02-RDW6TP FAQ
1.How can I place an order for M24C02-RDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C02-RDW6TP 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-RDW6TP reliable?
The price and inventory of M24C02-RDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C02-RDW6TP is usually 5 days.
3.What payment methods are accepted for M24C02-RDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C02-RDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C02-RDW6TP?
M24C02-RDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C02-RDW6TP 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-RDW6TP?
For technical support, including M24C02-RDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C02-RDW6TP requirements.
6.How does Aetrix verify that M24C02-RDW6TP is sourced from the original manufacturer or authorized distributors?
All M24C02-RDW6TP 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-RDW6TP meets industry standards.
7.What is the process for return or replacement of M24C02-RDW6TP?
All M24C02-RDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C02-RDW6TP, 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-RDW6TP part is unused and in its original packaging.
Return procedure for M24C02-RDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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