The **M24C02-RMB3TP/W** is a specific variant of the 2-Kbit serial I2C Bus EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. This component is widely used for non-volatile data storage in space-constrained electronic devices. --- ## 1. Technical Specifications The following table outlines the core electrical and physical parameters of this specific part: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 bytes x 8 bits) | | **Interface** | I2C (Serial 2-Wire) | | **Operating Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) / 1 MHz (Fast Mode Plus) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Temperature Range** | -40°C to +125°C (Automotive Grade 3) | | **Write Cycles** | 4 Million cycles (at 25°C) | | **Data Retention** | 200 Years | --- ## 2. Key Features ### I2C Serial Interface It uses a standard two-wire protocol (SCL for clock, SDA for data). It supports multi-master environments and allows for hardware addressing, meaning multiple EEPROMs can reside on the same bus. ### Write Protection (WP) The device includes a hardware Write Control (WC) pin. When this pin is high, the entire memory becomes read-only, protecting stored data from accidental overwrites. ### Low Power Consumption Designed for battery-operated devices, it features: * **Active Read Current:** < 1 mA * **Standby Current:** < 1 µA (at 1.8V) --- ## 3. Decoding the Part Number The suffix **RMB3TP/W** provides specific information about the packaging and process: * **M24C02**: Base part number (2 Kbit I2C EEPROM). * **-R**: Operating voltage range (1.8V to 5.5V). * **MB**: Package code for **UFDFPN8** (2x3 mm). * **3**: Temperature range (-40 to +125 °C). * **TP**: Tape & Reel packing. * **W**: Indicates a specific process technology or "High Reliability" flow (often associated with automotive-grade robustness). --- ## 4. Pin Configuration (UFDFPN8) | Pin | Name | Function | | :--- | :--- | :--- | | 1-3 | E0, E1, E2 | Chip Enable (Address inputs) | | 4 | $V_{SS}$ | Ground | | 5 | SDA | Serial Data | | 6 | SCL | Serial Clock | | 7 | WC | Write Control (Write Protect) | | 8 | $V_{CC}$ | Supply Voltage | --- ## 5. Typical Applications * **Consumer Electronics:** Storing user settings, calibration data, or device IDs. * **Automotive:** Storing error logs or configuration parameters in modules like lighting or climate control. * **Medical Devices:** Storing sensor calibration constants.