STMicroelectronics M24C04-RMN6P 4KB EEPROM, SO8N Package with I2C Interface

STMicroelectronics M24C04-RMN6P EEPROM Overview

The STMicroelectronics M24C04-RMN6P is a high-reliability 4KB electrically erasable programmable read-only memory (EEPROM) engineered for non-volatile data retention in mid-scale electronic systems. It integrates an industry-standard I2C (2-wire serial) interface, enabling seamless communication with microcontrollers, industrial sensors, and IoT modules-making it a trusted solution for B2B engineers prioritizing storage capacity, design flexibility, and long-term data security.

As a product from STMicroelectronics, a global leader in semiconductor innovation with decades of expertise in memory technologies, the device meets strict quality benchmarks for industrial, consumer, and medical applications. For more trusted industrial ICs and memory components, visit 集成电路制造商.

Technical Parameters of M24C04-RMN6P

Key Technical Features of M24C04-RMN6P

• 硬件写保护 via a dedicated WP pin, preventing accidental erasure or modification of critical data (e.g., industrial process settings, medical device calibration values) in high-reliability systems.
• 自定时写入周期（最长 5 毫秒），无需外部定时电路，简化了软件集成--降低了设计复杂性，缩短了工程师的产品上市时间。
• 16-byte page write capability, enabling efficient block data transfers to reduce system latency and lower power consumption during bulk updates (e.g., storing hourly sensor logs in IoT devices).
• Low standby current (typical 1??A at 3V) and low active current (typical 1mA at 3V, 1MHz), optimizing power efficiency for battery-powered devices where extended operational life is critical.
• Unlimited read cycles, ensuring reliable data access without performance degradation over the device??s operational lifetime-critical for applications requiring frequent data retrieval (e.g., smart meters).

Advantages of M24C04-RMN6P Over Alternative Solutions

Compared to smaller EEPROMs (1KB/2KB), parallel memory chips, or narrow-voltage-range alternatives, the M24C04-RMN6P delivers three critical benefits for B2B designs:

First, its 4KB capacity eliminates storage compromises. Smaller 1KB/2KB EEPROMs force engineers to limit data logging (e.g., truncating weekly energy usage logs in smart meters) or reduce configuration complexity. Larger 8KB+ EEPROMs waste PCB space and increase cost. The 4KB capacity perfectly matches mid-scale needs, making it ideal for smart meters, industrial sensors, and IoT gateways that require enough storage for multi-setting configs or short-term data logs.

Second, its I2C interface reduces design complexity. Parallel memory chips require 8+ data and address pins, cluttering PCB layouts and limiting miniaturization. The M24C04-RMN6P uses just two wires (SDA for data, SCL for clock), cutting trace count by 75%. This is critical for compact systems like IoT gateways or portable medical monitors, where board space directly impacts product size and functionality. It also supports multi-device communication-multiple EEPROMs or sensors can share the same bus, further simplifying layouts.

Third, its durability and flexibility outperform budget alternatives. Low-cost EEPROMs often offer only 100,000 write cycles, 10?C20 years of data retention, or narrow voltage ranges (e.g., 3.3V only). The M24C04-RMN6P delivers 1 million write cycles, 40 years of retention, and a 1.8V?C5.5V range-compatible with legacy 5V industrial systems and modern 1.8V IoT designs. This reduces component inventory and ensures long-term reliability for end products, lowering maintenance costs for customers.

Typical Applications of M24C04-RMN6P

The M24C04-RMN6P is engineered to solve mid-scale non-volatile storage challenges across industries. Its key use cases include:

• 能源与电力（智能电表）: Storing daily/weekly energy usage logs, billing information, and device settings-ensuring accurate tracking even during power disruptions and simplifying utility billing processes.
• 工业自动化: Retaining PLC operational parameters (e.g., motor speed setpoints, alarm thresholds) and short process logs in factory sensors-withstanding industrial temperatures and ensuring uninterrupted production during power outages.
• 物联网: Storing sensor data logs (e.g., 24-hour environmental readings), network credentials, and device metadata in compact IoT gateways-enabling continuous monitoring without data loss during power cycles.
• 医疗设备（便携式）: Preserving patient-specific data (e.g., 7-day blood pressure trends) and device calibration settings in handheld monitors-complying with healthcare standards for data integrity and supporting accurate patient care tracking.
• 消费电子产品: Saving multi-user profiles (e.g., audio equalizer settings, display presets) in high-end smart TVs or portable gaming consoles-delivering personalized experiences without reconfiguration after power loss.

常见问题（FAQ）

Why is the 4KB capacity a good fit for smart meters?

Smart meters need to store mid-scale data: weekly energy usage logs (typically 7 days x 24 hours = 168 data points), billing periods, and device settings. 1KB/2KB EEPROMs are too small to hold this data, while 8KB+ options are unnecessary and increase cost. The 4KB capacity perfectly matches these needs, ensuring efficient storage without waste.

How does the 1MHz clock frequency benefit industrial sensors?

Industrial sensors often need to update data (e.g., temperature, pressure readings) frequently to maintain process precision. The 1MHz clock frequency lets the M24C04-RMN6P transfer data up to 10x faster than slower 100kHz EEPROMs, ensuring sensor data is stored or retrieved in milliseconds. This reduces latency, critical for time-sensitive industrial processes like assembly line monitoring.

Can the M24C04-RMN6P operate in both 1.8V IoT devices and 5V industrial systems?

Yes. Its 1.8V?C5.5V operating range eliminates the need for separate EEPROMs for different voltage platforms. For 1.8V IoT microcontrollers (e.g., ESP32-C3), it runs directly from the battery without a regulator. For 5V industrial PLCs, it integrates seamlessly with legacy hardware. This flexibility simplifies inventory management and reduces design time for engineers working across multiple projects.

何时使用该 EEPROM 的写保护功能？

Enable write protection (by tying the WP pin to VCC) when storing data that must not be accidentally modified. For example, in medical devices, protect patient calibration values to prevent errors from software glitches. In industrial systems, protect process setpoints to avoid production disruptions from unintended changes. This ensures data integrity in high-reliability applications.

How long will the M24C04-RMN6P retain data, and is it enough for long-life products?

It guarantees 40 years of data retention, far exceeding the typical 10?C20 year lifespan of products like smart meters, industrial sensors, or medical monitors. This ensures critical data (e.g., usage logs, calibration settings) remains intact for the product??s entire operational life. With 1 million write cycles, it also handles frequent updates (e.g., daily energy logs) without degradation-meeting long-term reliability standards.