The **M24C02-RMB3TG/G** is a specific variant of the M24C02 family produced by STMicroelectronics. It is a 2-Kbit serial I²C (Inter-Integrated Circuit) EEPROM (Electrically Erasable Programmable Memory). --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 bytes) | | **Interface** | I²C Serial (2-wire) | | **Clock Frequency** | 400 kHz (Fast Mode) / 100 kHz (Standard) | | **Operating Voltage (Vcc)** | 1.8V to 5.5V | | **Write Cycle Time** | 5 ms (Max) | | **Data Retention** | 40 Years (Minimum) | | **Write Cycles** | 4 Million cycles (at 25°C) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | --- ### 2. Detailed Component Breakdown #### Memory Organization The 2-Kbit memory is organized as **256 x 8 bits**. It supports page writes of up to 16 bytes. This makes it ideal for storing small amounts of configuration data, calibration parameters, or device IDs. #### Communication Interface (I²C) It operates as a slave device on the I²C bus. It uses two signals: * **SCL (Serial Clock):** Provided by the master to synchronize data transfer. * **SDA (Serial Data):** Bidirectional line for sending and receiving data. #### Special Features * **Write Protection (WC pin):** A hardware pin that allows the user to write-protect the entire memory. If connected to $V_{CC}$, write operations are inhibited. * **Byte and Page Write:** Allows writing a single byte or a block of up to 16 bytes in one cycle. * **Schmitt Trigger Inputs:** Used for noise filtering on the SCL and SDA lines to ensure stable communication in noisy environments. --- ### 3. Part Number Decoding (M24C02-RMB3TG/G) Understanding the suffixes helps identify the specific physical and chemical properties of this chip: | Code | Meaning | | :--- | :--- | | **M24** | I²C Serial EEPROM family | | **C02** | 2 Kbit density | | **-R** | Operating Voltage: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **3** | Temperature Range: -40°C to +125°C (Automotive/Industrial grade) | | **TG** | Packing: Tape & Reel | | **G** | ECOPACK2 (RoHS compliant, Halogen-free) | --- ### 4. Implementation Example (Basic Hookup) Below is a conceptual connection for an MCU interface: ```cpp // Example: Basic I2C Write for M24C02 (Pseudocode) #include #define EEPROM_ADDR 0x50 // Standard 7-bit I2C address void writeEEPROM(int address, byte data) { Wire.beginTransmission(EEPROM_ADDR); Wire.write(address); // Memory location (0-255) Wire.write(data); // Data to store Wire.endTransmission(); delay(5); // Wait for internal write cycle (5ms) } ```