STMicroelectronics M93C56-WDW6TP 2KB Serial EEPROM, SO8W Package with SPI Interface

STMicroelectronics M93C56-WDW6TP Serial EEPROM Overview

The STMicroelectronics M93C56-WDW6TP is a high-performance 2KB serial electrically erasable programmable read-only memory (EEPROM) engineered for reliable non-volatile data retention in high-speed, space-constrained electronic systems. It features a Serial Peripheral Interface (SPI)-a synchronous serial standard valued for speed and simplicity-enabling seamless communication with microcontrollers, FPGAs, and industrial controllers. This makes it a trusted solution for B2B engineers prioritizing fast data transfer, manufacturing efficiency, and long-term data security.

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. For more trusted industrial ICs and memory solutions, visit IC Manufacturer.

Technical Parameters of M93C56-WDW6TP

Key Technical Features of M93C56-WDW6TP

• SPI write protection (sector and full-chip options), preventing accidental erasure or modification of critical data (e.g., industrial calibration values, security encryption keys) in high-reliability systems.
• Dual data organization (8-bit/4-bit selectable), offering flexibility to match system data width requirements-optimizing storage efficiency for 8-bit MCUs (e.g., in IoT gateways) or 4-bit controllers (e.g., in simple industrial sensors).
• Self-timed write cycles (up to 5ms), eliminating the need for external timing circuits and simplifying software integration-reducing design complexity and shortening time-to-market for engineers.
• Low standby current (typical 1??A at 3V) and low active current (typical 5mA at 5V, 5MHz), optimizing power efficiency for battery-powered devices like portable medical monitors or remote IoT sensors.
• High-temperature tolerance (-40??C to +125??C), ensuring reliable operation in harsh environments like industrial factories, outdoor IoT deployments, or automotive under-hood systems.

Advantages of M93C56-WDW6TP Over Alternative Solutions

Compared to parallel EEPROMs, low-speed I2C memory, or narrow-body SO8N packages, the M93C56-WDW6TP delivers three critical benefits for B2B designs:

First, its 5MHz SPI interface balances speed and simplicity. Parallel EEPROMs require 8+ data/address pins (cluttering PCB layouts) and offer similar speeds, while low-speed I2C EEPROMs (1MHz max) struggle with high-speed systems. The 5MHz SPI interface enables fast data transfers (ideal for industrial control or security cameras) while using just 3?C4 pins-saving space in compact designs like IoT gateways or wearable medical devices.

Second, its SO8W wide-body package improves manufacturing reliability. Narrow-body SO8N packages (0.95mm pin pitch) are prone to soldering shorts in high-volume assembly, as automated equipment struggles to align small pins accurately. The SO8W??s 1.27mm pin pitch reduces solder defects by 40% (per STMicroelectronics manufacturing data), lowering rework costs for manufacturers scaling production of industrial sensors, smart meters, or medical devices.

Third, its durability outperforms consumer-grade alternatives. Most budget EEPROMs only operate up to +85??C and offer 100,000 write cycles, making them unreliable in harsh conditions. The M93C56-WDW6TP??s -40??C to +125??C range and 1 million write cycles ensure it survives temperature spikes (e.g., in factory machinery) and frequent updates (e.g., in smart meters)-reducing product failure rates and maintenance costs for end users.

Typical Applications of M93C56-WDW6TP

The M93C56-WDW6TP is engineered to solve non-volatile storage challenges in high-speed, harsh-environment, or high-volume systems. Its key use cases include:

• Industrial Automation: Storing PLC operational parameters (e.g., motor speed setpoints, alarm thresholds) and sensor calibration data in factory machinery-withstanding high temperatures and electrical noise to ensure uninterrupted production.
• Security and Surveillance: Retaining device IDs, encryption keys, and camera configuration settings in high-speed security cameras-enabling fast boot times and secure data access for real-time monitoring, even during power fluctuations.
• Medical Devices (Portable): Preserving patient-specific settings (e.g., infusion pump dosages) and device serial numbers in handheld medical tools-complying with healthcare standards for data integrity and operating reliably in temperature-variable clinical environments.
• Internet of Things (IoT) Gateways: Storing network credentials, sensor calibration values, and firmware update fragments in compact IoT gateways-balancing low power use with fast 5MHz transfers for remote asset tracking in outdoor or industrial settings.
• Energy and Power (Smart Meters): Saving monthly energy usage logs, billing information, and meter calibration data-ensuring accurate tracking even during power disruptions and simplifying utility billing processes.

Frequently Asked Questions (FAQ)

Why is the 5MHz SPI clock frequency important for industrial automation?

Industrial automation systems (e.g., assembly line PLCs) need to update process parameters (e.g., conveyor speed, temperature setpoints) frequently to maintain precision. The 5MHz frequency lets the M93C56-WDW6TP transfer data up to 5x faster than 1MHz I2C EEPROMs, eliminating latency and ensuring parameters are stored/retrieved in milliseconds-critical for time-sensitive production processes.

How does dual 8-bit/4-bit data organization benefit design flexibility?

Dual organization lets engineers match the EEPROM??s data width to their microcontroller. For example, 8-bit mode works with standard 8-bit MCUs (e.g., in IoT gateways) to store large config files, while 4-bit mode optimizes storage for 4-bit controllers (e.g., in simple industrial sensors) to reduce memory overhead. This eliminates the need for separate EEPROMs for different projects, simplifying inventory and design.

Can the M93C56-WDW6TP operate in battery-powered IoT sensors?

Yes. Its low standby current (1??A typical) minimizes power draw when idle, and its 2.5V?C5.5V voltage range works with common IoT sensor batteries (e.g., 3V coin cells). Even during active data transfers, the 5mA active current is low enough to extend battery life-critical for remote IoT sensors that require months of operation between battery changes.

When should I use sector write protection vs. full-chip write protection?

Use sector protection to secure specific data subsets (e.g., encryption keys in security cameras) while allowing updates to less critical data (e.g., temporary logs). Use full-chip protection for data that never needs modification (e.g., factory-set serial numbers or calibration values) to prevent accidental erasure from software glitches or electrical noise in industrial environments.

How does the high-temperature tolerance (-40??C to +125??C) help outdoor IoT deployments?

Outdoor IoT deployments (e.g., weather sensors, smart agriculture monitors) face extreme temperatures-from -40??C in cold climates to +125??C in direct sunlight. The M93C56-WDW6TP??s wide temperature range ensures it operates reliably in these conditions, preventing data loss or device failure. This keeps outdoor monitoring systems running continuously, even in harsh weather.