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STMicroelectronics M24C02-RMN6P
- Part No.:
- M24C02-RMN6P
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C02-RMN6P.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
M24C02-RMN6P 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, -40 °C to +85 °C operation, and hardware write protection via WC pin - used for configuration storage in embedded sensors and industrial control modules.
For engineers reviewing the M24C02-RMN6P datasheet, M24C02-RMN6P pinout, M24C02-RMN6P application, or M24C02-RMN6P equivalent, key selection considerations include its 16-byte page size, 5 ms max write cycle time, DFN8 (2 × 3 mm) ECOPACK2 package, I²C address flexibility via E0–E2 pins (not present in DFN5), and full compatibility with standard I²C protocol timing and ACK polling.
Technical Context
The M24C02-RMN6P implements a synchronous I²C slave interface with start/stop detection, 7-bit device addressing (1010xxxR/W), and internal address counter auto-increment. It supports byte and page write modes, random/sequential read, and hardware-based full-array write protection via the WC input.
Its memory array uses floating-gate EEPROM technology with on-chip charge pump for programming; the device includes power-on reset (POR) circuitry, enhanced ESD protection (±3 kV HBM), and latch-up immunity per JEDEC standards. The DFN8 package variant (MN6P suffix) omits E0–E2 pins, fixing address bits b2–b0 to 000.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 2 Kbit (256 × 8 bits), sufficient for storing calibration data, device IDs, or small firmware patches in space-constrained designs. |
| I²C clock frequency | Up to 400 kHz (Fast mode), enabling high-throughput configuration updates without requiring dedicated SPI interfaces. |
| Supply voltage range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic (e.g., ARM Cortex-M0+ peripherals) and legacy 5 V microcontrollers. |
| 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 parameters without refresh in battery-backed or maintenance-free applications. |
| Page size | 16 bytes - optimizes burst writes while minimizing bus occupancy; enables efficient storage of sensor offset/gain tables. |
| Operating temperature | -40 °C to +85 °C - qualified for use in automotive body electronics, smart meters, and outdoor IoT edge nodes. |
Pinout & Package
Package: UFDFPN8 (ECOPACK2), also known as DFN8, 2 mm × 3 mm, 0.5 mm pitch, exposed pad (thermal enhancement), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary return path for all internal logic and I/O; must be low-impedance connection to system GND plane. |
| WC | Write control input | Active-high hardware lock: when driven high, disables all write operations to entire memory array - prevents accidental corruption during power transitions. |
| E1 | Chip enable bit 1 | Configures I²C slave address bit b2; tied high/low to select one of eight possible device addresses on shared bus (not connected in DFN5). |
| E0 | Chip enable bit 0 | Configures I²C slave address bit b1; enables up to eight M24C02-R devices on same I²C bus without software arbitration. |
| VCC | Supply voltage | Power input (1.8–5.5 V); requires local 10–100 nF decoupling capacitor between VCC and VSS near package pins. |
| E2 | Chip enable bit 2 | Configures I²C slave address bit b3; combined with E1/E0, sets three LSBs of 7-bit device address (1010xxxR/W). |
| SCL | Serial clock input | Master-generated clock (≤400 kHz); rising edge samples SDA, falling edge allows SDA transition - defines I²C timing compliance. |
| SDA | Serial data bidirectional | Open-drain I/O requiring external pull-up; carries address, data, and ACK/NACK signals - shared across multiple I²C slaves. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all writes globally - eliminates need for software-level address locking or firmware guardrails in safety-critical systems. |
| Page write capability | 16-byte burst writes reduce I²C transaction overhead by >75% vs. byte-by-byte writes - critical for rapid parameter updates in real-time control loops. |
| ACK polling support | Enables non-blocking write completion detection - avoids fixed 5 ms delays and improves host CPU utilization in multitasking firmware. |
| Enhanced reliability | 4M write cycles + 200-year data retention + ±3 kV HBM ESD - meets industrial equipment longevity requirements without external backup mechanisms. |
| Low-voltage operation | 1.8 V minimum VCC enables direct integration with ultra-low-power MCUs (e.g., STM32L0/L4) without level-shifting circuitry. |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
|
Use Scenario: Storing factory-calibrated gain/offset coefficients and temperature compensation tables for analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization and periodic self-test routines via I²C. Use Value: Eliminates need for external trimming components and enables field recalibration using standardized I²C commands - reducing BOM count and service cost. |
Use Scenario: Retaining tariff schedules, metering constants, and tamper-event logs in ANSI C12.22-compliant electricity meters operating across wide temperature ranges. IC Role / Device Role / Timing Role: Secure, write-protected data vault synchronized with metrology IC registers during billing cycle transitions. Use Value: WC pin prevents unauthorized firmware or tariff modifications during live grid operation - satisfying utility cybersecurity audit requirements. |
| Automotive Body Control Module | IoT Edge Node Device Identity |
|
Use Scenario: Holding seat position memory, mirror angle presets, and lighting profiles in 12 V vehicle subsystems with transient-suppressed power rails. IC Role / Device Role / Timing Role: Low-voltage (1.8 V compatible) EEPROM interfaced directly to CAN-to-I²C gateway MCU without level shifters. Use Value: Operates reliably during cold-crank (down to 1.8 V) and hot-soak conditions (-40 °C to +85 °C), ensuring user preferences persist across ignition cycles. |
Use Scenario: Storing unique device identifiers (UID), cryptographic keys, and OTA update metadata in battery-powered LoRaWAN end-nodes. IC Role / Device Role / Timing Role: Secure boot credential store accessed once at startup; write-protected after provisioning to prevent key leakage. Use Value: 200-year data retention ensures UID/key integrity over full product lifecycle - eliminating cloud-based identity management overhead. |
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 lacks WC pin; uses software write protection only. | No hardware-level write lock - unsuitable where power-loss during write could corrupt critical settings. | Select when cost sensitivity outweighs need for fail-safe write blocking; verify firmware handles write-interrupt recovery. |
| BR24G02FJ-WE2 (ROHM) | 2-Kbit, 1.6–5.5 V, includes WC pin, but rated only to +105 °C (vs. +85 °C for M24C02-RMN6P) and has 1 ms faster typical write time. | Better thermal margin for under-hood automotive use, but tighter AC timing may require host controller validation. | Prefer for high-temp environments; confirm SCL rise/fall time compliance with BR24G02FJ's 20 ns max specification. |
Compared with AT24C02D-SSHM-T and BR24G02FJ-WE2, the M24C02-RMN6P offers balanced voltage flexibility (1.8–5.5 V), guaranteed hardware write protection, and industrial-grade temperature qualification - making it optimal for mixed-voltage embedded systems requiring deterministic data integrity.
Availability
M24C02-RMN6P is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, automotive body control modules, and IoT edge node device identity applications requiring stable component supply, long-term obsolescence planning, and RoHS-compliant sourcing.
Supply support for M24C02-RMN6P 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 management ICs, MEMS sensors, and analog/mixed-signal products for industrial, automotive, and consumer markets.
The M24C02-RMN6P belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in space- and reliability-constrained embedded systems - emphasizing ease of integration, long-term data integrity, and broad voltage interoperability.
FAQ
What is the function of the WC pin on the M24C02-RMN6P?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations to the entire memory array when driven high. It provides fail-safe protection against unintended writes during power-up, brown-out, or firmware glitches - unlike software-only protection, WC operates independently of the I²C interface state and requires no clock or command sequence to activate.
Can the M24C02-RMN6P operate at 1.8 V while maintaining full I²C timing compliance?
Yes - the M24C02-RMN6P is fully specified for 1.8 V to 5.5 V operation, including 400 kHz Fast-mode I²C timing at 1.8 V. Its internal charge pump and logic design ensure setup/hold times, SCL/SDA rise/fall characteristics, and ACK response meet I²C specification requirements across the full voltage range, verified per DS9398 Rev 8 test conditions.
How does the DFN8 (MN6P) package differ from SO8N or TSSOP8 variants in terms of pin functionality?
The DFN8 (UFDFPN8) package retains all eight pins (VSS, WC, E1, E0, VCC, E2, SCL, SDA) with identical electrical functions as SO8N and TSSOP8. Unlike the DFN5 variant, MN6P includes accessible E0–E2 pins for full 3-bit address configuration. Its 2 mm × 3 mm footprint and exposed thermal pad improve board density and thermal performance in compact PCB layouts.
Is the M24C02-RMN6P compatible with standard I²C master controllers without custom drivers?
Yes - the M24C02-RMN6P implements standard I²C protocol behavior: 7-bit slave address (1010xxxR/W), START/STOP condition detection, ACK/NACK handshaking, and byte/page write semantics. It requires no proprietary firmware or initialization sequences and works with generic I²C peripheral libraries on STM32, ESP32, PIC, and ARM Cortex-M platforms.
M24C02-RMN6P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M24C02-RMN6P FAQ
1.How can I place an order for M24C02-RMN6P through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C02-RMN6P 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-RMN6P reliable?
The price and inventory of M24C02-RMN6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C02-RMN6P is usually 5 days.
3.What payment methods are accepted for M24C02-RMN6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C02-RMN6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C02-RMN6P?
M24C02-RMN6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C02-RMN6P 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-RMN6P?
For technical support, including M24C02-RMN6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C02-RMN6P requirements.
6.How does Aetrix verify that M24C02-RMN6P is sourced from the original manufacturer or authorized distributors?
All M24C02-RMN6P 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-RMN6P meets industry standards.
7.What is the process for return or replacement of M24C02-RMN6P?
All M24C02-RMN6P units undergo pre-shipment inspection (PSI). If there is an issue with M24C02-RMN6P, 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-RMN6P part is unused and in its original packaging.
Return procedure for M24C02-RMN6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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