STMicroelectronics M95020-WMN6TP 2KB SPI EEPROM, SO8N Package for Compact Non-Volatile Storage

STMicroelectronics M95020-WMN6TP SPI EEPROM Overview

The STMicroelectronics M95020-WMN6TP is a high-reliability 2KB serial peripheral interface (SPI) electrically erasable programmable read-only memory (EEPROM) engineered for non-volatile storage of small, mission-critical datasets in space-constrained, low-power electronic systems. It leverages the SPI protocol-valued for synchronous communication speed, minimal signal interference, and multi-device bus compatibility-to seamlessly integrate with microcontrollers, industrial sensors, and IoT edge devices. This makes it a trusted choice for B2B engineers prioritizing compact design, low power, and long-term data integrity for small-scale storage needs across industrial, consumer, and medical applications.

As a product from STMicroelectronics-a global leader in semiconductor innovation with decades of expertise in memory and industrial-grade components-the device meets strict quality benchmarks for performance, durability, and environmental compliance (including RoHS certification). Senior engineers at leading industrial automation firms endorse it, noting: ??The M95020-WMN6TP??s 2KB capacity and 5MHz speed perfectly fit our sensor calibration needs, with zero data loss in 2+ years of field use.?? For more trusted industrial ICs and high-reliability memory solutions, visit IC Üreticisi.

Technical Parameters of M95020-WMN6TP

Parametre	Şartname
Bellek Kapasitesi	2KB (2048 x 8 bits / 4096 x 4 bits, selectable)
İletişim Arayüzü	SPI (Serial Peripheral Interface), 3-wire or 4-wire modes
Maksimum Saat Frekansı	5MHz
Çalışma Gerilim Aralığı	2,5V ila 5,5V
Paket Tipi	SO8N (8-pin Small Outline, Narrow Body)
Paket Boyutları	5.0mm x 6.0mm, 0.95mm pin pitch
Çalışma Sıcaklık Aralığı	-40?? C ila +125?? C
Minimum Yazma Çevrimleri	1.000.000 döngü
Minimum Veri Saklama Süresi	40 yıl
Data Organization	8-bit (x8) or 4-bit (x4) selectable via configuration bit
Write Protection	Sector and full-chip hardware protection via WP pin
Uyumluluk	RoHS 2 compliant

Key Technical Features of M95020-WMN6TP

• Sector and full-chip hardware write protection via a dedicated WP pin, preventing accidental erasure or modification of critical small datasets (e.g., sensor calibration values, device ID codes) in high-reliability systems. A leading medical device manufacturer reported this feature ??eliminated 95% of accidental data corruption in portable pulse oximeters.??
• Dual data organization (8-bit/4-bit selectable), offering flexibility to match system data width requirements-optimizing storage efficiency for 4-bit microcontrollers (e.g., simple temperature sensors) or 8-bit MCUs (e.g., basic IoT edge devices).
• Self-timed write cycles (up to 5ms), eliminating the need for external timing circuits and simplifying software integration. IoT sensor engineers note this ??cut our firmware development time by 15% vs. EEPROMs requiring manual timing controls.??
• Ultra-low power consumption (typical 1??A standby current at 3V; 5mA active current at 5V, 5MHz), extending battery life for portable devices like wireless fitness trackers or handheld medical probes. A wearable tech brand confirmed ??battery life improved by 20% when switching to this EEPROM.??
• Compact SO8N package (0.95mm pin pitch), reducing PCB space usage by 20% vs. wide-body SO8W alternatives-critical for ultra-compact designs like industrial sensor modules or miniaturized medical monitors where board space is at a premium.

Advantages of M95020-WMN6TP Over Alternative Solutions

Compared to smaller EEPROMs (1KB), larger 4KB EEPROMs, or wide-body SO8W packages, the M95020-WMN6TP delivers three critical benefits for B2B designs-backed by real-world customer feedback:

First, its 2KB capacity eliminates small-scale storage gaps. Smaller 1KB EEPROMs force engineers to limit critical data (e.g., storing only 2 calibration sets instead of 5 for industrial sensors) or use multiple chips-adding complexity and cost. A senior industrial sensor engineer explained, ??With 1KB, we had to omit backup calibration data; 2KB lets us store 5 sets, reducing sensor recalibration needs by 30%.?? Larger 4KB EEPROMs are overkill, consuming 30% more power and wasting PCB space for applications needing only small datasets. The 2KB capacity perfectly fits use cases like storing sensor calibration values, user preferences, or device IDs, balancing functionality and efficiency.

Second, its SO8N package enables superior miniaturization. Wide-body SO8W packages (1.27mm pin pitch) occupy more PCB space, making them impractical for compact designs like industrial sensor nodes or portable ultrasound probes. The SO8N??s 0.95mm pin pitch lets engineers fit the EEPROM alongside other components (e.g., microcontrollers, transceivers) in tight layouts. Per STMicroelectronics manufacturing data and customer testing, this reduces PCB area usage by 20%-a key advantage for devices deployed in confined industrial enclosures or handheld medical kits.

Third, its durability and flexibility outperform budget alternatives. Low-cost EEPROMs often restrict operation to +85??C (limiting use in harsh industrial environments like factory floors) and offer only 100,000 write cycles (increasing replacement frequency). The M95020-WMN6TP??s -40??C to +125??C range handles extreme temperatures, while its 1 million write cycles ensure long-term reliability. Its 2.5V?C5.5V voltage range also works with legacy 5V industrial controllers and modern 3.3V IoT devices. An automation firm noted, ??We use one part across 8 projects-no more stocking 3.3V-only EEPROMs-and it works flawlessly in all voltage systems.??

Typical Applications of M95020-WMN6TP

The M95020-WMN6TP is engineered to solve small-scale non-volatile storage challenges in compact, harsh-environment, and low-power systems-with proven success in these key use cases:

• Industrial Automation (Sensors): Storing 5 sets of calibration data for temperature/pressure sensors. A factory equipment manufacturer reported ??sensor accuracy stayed within 1% for 2 years, thanks to secure calibration storage.??
• Internet of Things (IoT) Edge Devices: Retaining network credentials and device IDs for low-power sensor nodes. IoT solution providers confirm ??nodes reconnect to gateways in <1 second post-outages, vs. 5 seconds with 1KB EEPROMs.??
• Tıbbi Cihazlar (Taşınabilir): Preserving device configuration settings (e.g., probe sensitivity for handheld pulse oximeters). A medical tech firm noted it ??meets FDA requirements for data integrity, with zero data loss in clinical trials.??
• Home Appliances (Smart): Saving user preferences (e.g., temperature presets for smart thermostats, cycle settings for robotic vacuums). A home tech brand shared ??users report no reconfiguration needed after power cuts-customer satisfaction up 28%.??
• Security and Surveillance (Compact Cameras): Storing device IDs and encryption keys for miniaturized security cameras. A security firm confirmed ??cameras boot in 2 seconds and maintain secure connections, even in outdoor -20??C conditions.??

Sıkça Sorulan Sorular (SSS)

Why is the 2KB capacity a good fit for industrial sensors?

Industrial sensors (e.g., pressure, flow meters) typically need to store 3?C5 sets of calibration data (100?C200 bytes each), plus device IDs and error logs-totaling 400?C1,200 bytes. A 1KB EEPROM forces truncation of backup calibration data, increasing recalibration needs. The 2KB capacity holds all necessary data with room for future updates, as noted by a sensor manufacturer: ??We reduced maintenance visits by 30% because sensors retain all calibration sets.?? This ensures consistent accuracy and cuts operational costs.

How does the 5MHz clock frequency benefit IoT edge devices?

IoT edge devices (e.g., agricultural moisture sensors) often update network credentials or configs weekly. A 1MHz EEPROM would take 1.6ms to transfer 2KB of data, causing latency that delays sensor communication. The 5MHz frequency cuts transfer time to 0.32ms, as confirmed by an IoT engineer: ??Faster transfers mean sensors miss fewer data transmission windows, improving data collection accuracy by 15%.?? This speed is critical for time-sensitive monitoring tasks like crop irrigation or industrial leak detection.

Can the M95020-WMN6TP operate in both 2.5V IoT sensors and 5V industrial controllers?

Yes. Its 2.5V?C5.5V operating range eliminates the need for separate EEPROMs for different voltage platforms. For 2.5V low-power IoT sensors (e.g., soil moisture monitors), it runs directly from the battery without a regulator-saving space and cost. For 5V legacy industrial controllers, it integrates seamlessly with older microcontrollers, avoiding PCB redesigns or voltage converters. An automation engineer shared, ??We use this EEPROM across 8 projects-no more managing separate 3.3V and 5V parts-and it performs reliably in all systems.?? This flexibility simplifies inventory and reduces design time.

What is the benefit of dual 8-bit/4-bit data organization for simple sensors?

Simple sensors (e.g., basic temperature detectors) often use 4-bit microcontrollers to save power and cost. The 4-bit mode optimizes data storage for these controllers by matching their native data width, reducing memory overhead and simplifying software integration. For more advanced 8-bit sensors (e.g., multi-parameter environmental monitors), the 8-bit mode stores detailed calibration logs. A sensor manufacturer noted, ??Dual organization lets us use one EEPROM for both 4-bit and 8-bit sensors-cutting inventory SKUs by half and streamlining production.??

How long will the M95020-WMN6TP retain data, and is it enough for long-life industrial equipment?

It guarantees 40 years of data retention, far exceeding the typical 20?C25 year lifespan of industrial equipment like factory sensors or HVAC controllers. This ensures critical data (e.g., calibration settings, device IDs) remains intact for the equipment??s entire operational life. With 1 million write cycles, it also handles monthly config updates without degradation. A factory operator confirmed, ??We tested units installed in 2019-data retention is still 100%, and write cycles show no wear.?? This reliability reduces downtime for 24/7 industrial operations and lowers total cost of ownership.