WisBlock RAK15000 EEPROM Module Microchip AT24CM02

The WisBlock RAK15000 is a high-capacity EEPROM memory module featuring the Microchip AT24CM02 serial EEPROM, designed for IoT and embedded systems requiring reliable non-volatile data storage. Professional engineers and developers use this module for configuration storage, firmware backup, sensor data logging, and parameter retention in remote monitoring applications. This product solves the critical challenge of persistent memory management in space-constrained IoT deployments where reliable data retention without power consumption is essential.

Product Overview

The WisBlock RAK15000 EEPROM Module integrates the Microchip AT24CM02 2-megabit serial EEPROM with I2C interface compatibility, enabling seamless integration into WisBlock ecosystems and standalone embedded projects. The AT24CM02 operates on I2C protocol at 400kHz standard mode, providing 256KB of addressable memory organized in 32-byte pages. This module delivers exceptional reliability with 1 million program/erase cycles per byte and data retention exceeding 200 years, making it ideal for mission-critical IoT applications requiring long-term data integrity and minimal maintenance overhead.

The module features ultra-low power consumption in standby mode, drawing less than 1 microampere, which is critical for battery-powered IoT devices. The AT24CM02 supports write-protect functionality through pin control, enabling hardware-level data security against accidental overwrites. Integration with RAK's WisBlock ecosystem provides standardized connector compatibility, allowing developers to rapidly prototype multi-sensor systems without custom PCB design. The module's industrial temperature range and robust ECC capabilities ensure reliable operation in harsh field conditions typical of remote monitoring, smart agriculture, and industrial IoT deployments.

Key Specifications

Specification	Details
Product Type	Serial EEPROM Memory Module
Brand	RAK Wireless / Microchip Technology
Memory Capacity	2 Megabit (256 Kilobyte)
Memory Type	AT24CM02 Serial EEPROM
Interface	I2C (Two-Wire Serial)
Clock Speed	400 kHz Standard Mode
Page Size	32 Bytes
Program/Erase Cycles	1 Million per Byte
Data Retention	200+ Years
Operating Voltage	2.7V to 5.5V
Standby Current	Less than 1 microampere
Write-Protect	Hardware Pin Control Supported
Operating Temperature	-40°C to +85°C
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• 2-Megabit High-Capacity Storage: 256KB addressable memory enables comprehensive data logging for extended deployment periods without external storage requirements
• I2C Serial Interface: 400kHz standard mode operation ensures compatibility with virtually all microcontroller platforms and simplifies integration into existing embedded systems
• Ultra-Low Power Consumption: Sub-1 microampere standby current extends battery life in remote IoT applications by months or years
• Exceptional Data Retention: 200+ year retention specification guarantees data integrity across product lifecycle without periodic refresh cycles
• Hardware Write-Protection: Pin-controlled write-protect functionality prevents accidental data corruption during field operations and firmware updates
• WisBlock Ecosystem Integration: Standardized connector format enables plug-and-play integration with RAK wireless modules and sensor arrays
• Industrial Temperature Range: -40°C to +85°C operation supports deployment in extreme environments from arctic monitoring stations to equatorial industrial facilities
• 1 Million Program/Erase Cycles: Exceptional endurance rating ensures reliable operation through thousands of configuration updates and data overwrites

Applications and Use Cases

• Smart Agriculture IoT: Store soil moisture calibration data, fertilizer application logs, and equipment maintenance schedules in remote field sensors without cloud dependency
• Industrial Condition Monitoring: Log vibration signatures, temperature trends, and equipment runtime hours for predictive maintenance analytics in manufacturing facilities
• Remote Environmental Monitoring: Archive air quality readings, rainfall data, and atmospheric pressure measurements from autonomous weather stations in remote locations
• Smart Metering Systems: Retain utility consumption history, tariff information, and meter calibration constants in smart electricity and water meters for billing and compliance
• Asset Tracking and Logistics: Store shipment history, temperature exposure logs, and location timestamps in IoT trackers for supply chain transparency and cold-chain verification
• Building Automation: Maintain HVAC schedules, occupancy patterns, and energy consumption baselines in wireless sensor nodes for intelligent climate control optimization
• Medical Device Data Logging: Archive patient monitoring readings, medication administration records, and device diagnostics in portable health monitoring devices

How to Use

To integrate the WisBlock RAK15000 EEPROM Module, insert the module into the WisBlock IO slot on your RAK carrier board, ensuring proper alignment with the connector pins. The module communicates via I2C protocol using standard SDA and SCL lines. Configure your microcontroller I2C peripheral for 400kHz operation and address the AT24CM02 using its 7-bit slave address (typically 0x50 with configurable bits based on A0, A1, A2 pin states). Initialize I2C communication with appropriate pull-up resistors (typically 4.7k ohms) on SDA and SCL lines if not already present on your carrier board.

For data operations, send write commands with the memory address followed by data bytes, respecting the 32-byte page boundary for efficient programming. Read operations require sending the target address followed by sequential byte reads up to the page boundary. Implement proper timing delays between write operations (typically 5-10ms) to allow internal EEPROM programming to complete. Enable hardware write-protection by pulling the WP pin high during field deployment to prevent accidental data corruption. Monitor the I2C bus for acknowledgment signals and implement error handling for timeout conditions in applications requiring high reliability. Refer to the AT24CM02 datasheet for detailed timing specifications and address mapping when implementing custom firmware drivers.

Frequently Asked Questions

What is the maximum I2C clock frequency supported by the AT24CM02?

The AT24CM02 supports I2C clock frequencies up to 400kHz in standard mode. While some variants support higher frequencies, the standard 400kHz specification ensures reliable operation across all temperature ranges and voltage conditions. Operating above 400kHz may result in data corruption or communication failures, particularly in noisy industrial environments or with longer cable runs.

How many AT24CM02 modules can be connected to a single I2C bus?

Up to 8 AT24CM02 modules can be connected to a single I2C bus by utilizing the three hardware address selection pins (A0, A1, A2). These pins allow configuration of 8 unique slave addresses (0x50 through 0x57), enabling independent addressing of each module. Ensure proper I2C pull-up resistors are installed and bus capacitance remains within specifications when connecting multiple modules.

What is the write cycle time and how should I implement delays in my firmware?

The AT24CM02 requires approximately 5-10 milliseconds per 32-byte page write operation. After sending a write command, your firmware should wait at least 10ms before initiating the next read or write operation. Implement polling of the I2C acknowledge bit or use a fixed delay timer to ensure reliable operation. Attempting to read during the internal write cycle will result in NAK responses and data corruption.

Can the AT24CM02 retain data without power supply?

Yes, the AT24CM02 is a non-volatile memory device that retains programmed data indefinitely without power supply. The 200+ year data retention specification guarantees data integrity even after decades of storage without power. This makes it ideal for IoT devices that may be powered down for extended periods or deployed in remote locations with intermittent power availability.

What protection does the hardware write-protect pin provide?

The WP (Write Protect) pin provides hardware-level protection against accidental write and erase operations. When pulled high, the WP pin disables all write commands, returning NAK responses to any write attempts. This prevents firmware bugs or external interference from corrupting stored data. The write-protect feature is particularly valuable in field-deployed devices where data integrity is mission-critical.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy WisBlock RAK15000 EEPROM Module Microchip AT24CM02 Online in India

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