STMicroelectronics M24C04-RDW6TP EEPROM Overview
The STMicroelectronics M24C04-RDW6TP 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, microprocessors, and digital components-making it a trusted solution for B2B engineers prioritizing storage capacity, manufacturing ease, and long-term data integrity.
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 IoT applications. For more trusted industrial ICs and memory components, visit IC Manufacturer.
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Technical Parameters of M24C04-RDW6TP
| Parameter | Specification |
|---|---|
| Memory Capacity | 4KB (4096 x 8 bits) |
| Communication Interface | I2C (2-wire serial) |
| Maximum Clock Frequency | 1MHz |
| Operating Voltage Range | 1.8V to 5.5V |
| Package Type | SO8W (8-pin Small Outline, Wide Body) |
| Operating Temperature Range | -40??C to +85??C |
| Minimum Write Cycles | 1,000,000 cycles |
| Minimum Data Retention | 40 years |
| Page Write Size | 16 bytes |
Key Technical Features of M24C04-RDW6TP
- Hardware write protection via a dedicated WP pin, preventing accidental erasure or modification of critical data (e.g., sensor calibration logs, user preferences) in high-reliability systems.
- Self-timed write cycles (up to 5ms), eliminating the need for external timing circuits and simplifying software integration for engineers.
- 16-byte page write capability, enabling efficient block data transfers to reduce system latency and lower power consumption during bulk updates.
- Low standby current (typical 1??A at 3V) and low active current (typical 1mA at 3V, 1MHz), optimizing power efficiency for battery-powered devices like portable medical monitors or IoT gateways.
- Unlimited read cycles, ensuring reliable data access without performance degradation over the device??s operational lifetime.
Advantages of M24C04-RDW6TP Over Alternative Solutions
Compared to smaller EEPROMs (1KB/2KB), narrow-body packages, or legacy parallel memory chips, the M24C04-RDW6TP delivers three critical benefits for B2B designs:
First, its 4KB capacity balances storage needs and space efficiency. Smaller EEPROMs force engineers to compromise on data logging or multi-setting storage, while larger options (8KB+) waste PCB space and increase cost. The M24C04-RDW6TP is ideal for applications like smart meters or industrial sensors that require mid-scale storage for usage data or complex configurations.
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Second, its SO8W wide-body package improves manufacturing reliability. Narrow-body SO8 packages (0.95mm pin pitch) are prone to soldering shorts in high-volume assembly, but the SO8W??s 1.27mm pin spacing reduces defects. This lowers rework costs for manufacturers scaling production of consumer electronics, IoT devices, or industrial controllers-saving time and resources.
Third, its flexibility outperforms voltage-constrained alternatives. Many budget EEPROMs only work with 3.3V or 5V systems, requiring external regulators for cross-compatibility. The M24C04-RDW6TP??s 1.8V?C5.5V range works seamlessly with legacy 5V industrial equipment and modern 1.8V/3.3V IoT microcontrollers, eliminating extra components and simplifying design.
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Typical Applications of M24C04-RDW6TP
The M24C04-RDW6TP is engineered to solve mid-scale non-volatile storage challenges across industries. Its key use cases include:
- Industrial Automation: Storing process logs (e.g., temperature trends, motor runtime) and PLC configurations in factory machinery-ensuring data is retained during power outages for post-fault analysis and uninterrupted production.
- Energy and Power (Smart Meters): Retaining daily/weekly energy usage data and billing information in smart meters-ensuring accurate tracking even during power disruptions and simplifying utility billing processes.
- Medical Devices: Preserving patient data (e.g., blood pressure trends, glucose levels) and device calibration settings in portable monitors-complying with healthcare standards for data integrity and patient safety.
- Internet of Things (IoT): Storing sensor data logs (e.g., environmental readings over hours/days) and network credentials in IoT gateways-enabling continuous monitoring without data loss during power cycles.
- Consumer Electronics: Saving multi-profile settings (e.g., user-specific audio equalizers, display presets) in high-end headphones or smart TVs-delivering personalized experiences without reconfiguration after power disruptions.
Frequently Asked Questions (FAQ)
Why is the 4KB capacity of the M24C04-RDW6TP a good fit for smart meters?
Smart meters need to store mid-scale data-such as daily energy usage logs, billing periods, and device settings-without wasting space. 1KB/2KB EEPROMs are too small for weekly logs, while 8KB+ options are unnecessary. The 4KB capacity perfectly matches these needs, ensuring efficient storage and cost-effectiveness.
How does the SO8W package??s wide pin spacing improve manufacturing?
The SO8W package has a 1.27mm pin pitch, wider than the 0.95mm pitch of narrow-body SO8 packages. This wider spacing makes it easier for automated assembly equipment to place and solder the device, reducing the risk of pin shorts or poor solder joints. Fewer defects mean lower rework costs and faster production timelines.
Can the M24C04-RDW6TP operate in both legacy industrial systems and modern IoT devices?
Yes. Its 1.8V?C5.5V operating range makes it compatible with legacy 5V industrial controllers and modern 1.8V/3.3V IoT microcontrollers. This flexibility eliminates the need to source different EEPROMs for different system generations, simplifying inventory management and reducing design time for engineers.
What is the benefit of the 16-byte page write capability?
The 16-byte page write feature allows multiple bytes to be written in a single operation, rather than one byte at a time. This reduces the number of I2C transactions needed for block data transfers (e.g., sensor logs), cutting system latency and lowering power consumption-critical for battery-powered devices like portable medical monitors.
How long will the M24C04-RDW6TP retain data, and how many times can I update it?
It guarantees 40 years of data retention, so stored data (like calibration settings or energy logs) will remain intact even if the device is powered off for decades. It also supports 1 million write cycles-enough for applications that require daily updates (over 2700 years of use) or hourly updates (over 114 years), ensuring long-term reliability for end products.




