The **M24C02-RMB6T/G** is a specific variant of the 2-Kbit serial I2C EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. ### 1. General Specifications This device is designed for low-power, low-voltage applications, common in consumer electronics and industrial sensors. | Feature | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 bytes x 8 bits) | | **Interface** | I2C (Serial 2-Wire) | | **Clock Frequency** | 400 kHz (Fast Mode) / 100 kHz (Standard) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | --- ### 2. Key Electronic Features #### A. Memory Architecture * **Organization:** 256 bytes of 8 bits each. * **Page Size:** 16-byte Page Write mode. This allows for faster data throughput compared to writing byte-by-byte. * **Write Time:** Typically **5 ms** for a full page or a single byte. #### B. The I2C Interface The chip uses two signals for communication: 1. **SCL (Serial Clock):** Used to synchronize data movements. 2. **SDA (Serial Data):** A bidirectional pin used to transfer addresses and data. #### C. Data Retention and Endurance * **Endurance:** More than 4 million write cycles (extremely high durability). * **Data Retention:** More than 200 years (ensures long-term data integrity without power). #### D. Hardware Write Protection (WC Pin) The **WC (Write Control)** pin is a hardware safety feature: * **If WC is High (Vcc):** The entire memory is write-protected (Read-only). * **If WC is Low (GND):** Write operations are enabled. --- ### 3. Part Number Breakdown: M24C02-RMB6T/G | Code | Meaning | | :--- | :--- | | **M24** | I2C Serial Access EEPROM | | **C02** | 2 Kbit density | | **-R** | Voltage range: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **6** | Temperature range: -40 to 85 °C | | **T** | Packing: Tape & Reel | | **G** | ECOPACK2 (RoHS compliant / Halogen-free) | --- ### 4. Implementation Example To interface with a microcontroller, use pull-up resistors (typically 4.7kΩ) on the SDA and SCL lines. ```cpp // Pseudo-code for writing a byte to the M24C02 Wire.beginTransmission(0x50); // Standard I2C Address for 24C02 Wire.write(0x00); // Memory Address to write to Wire.write(0x41); // Data byte ('A') Wire.endTransmission(); // Stop condition ```