The **M24C02-RMB3T/G** is a specific variant of the M24C02 series produced by **STMicroelectronics**. It is a 2-Kbit serial I²C bus EEPROM (Electrically Erasable Programmable Memory) designed for low-power and low-voltage applications. ### 1. Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Memory Size** | 2 Kbit (256 x 8 bits) | | **Interface** | I²C (Two-wire serial interface) | | **Operating Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) or 100 kHz (Standard Mode) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Operating Temperature** | -40°C to +125°C | | **Write Cycles** | 4 million write cycles (Typical) | | **Data Retention** | 200 Years | --- ### 2. Functional Features * **Byte and Page Write:** Supports writing a single byte or a page of up to 16 bytes. * **Write Protection:** Includes a Write Control (WC) pin. When connected to $V_{CC}$, the entire memory is write-protected. * **Random and Sequential Read:** Allows reading from a specific address or streaming data sequentially across the entire memory map. * **Low Consumption:** * Active Read Current: < 1 mA * Standby Current: < 1 µA (at 1.8V) * **Self-timed Write Cycle:** The internal write cycle is typically 5ms. --- ### 3. Pinout Description (UFDFPN8) | Pin Name | Function | Description | | :--- | :--- | :--- | | **E0, E1, E2** | Chip Enable | Used to set the hardware address for the device on the I²C bus. | | **SDA** | Serial Data | Bidirectional pin used to transfer data in and out. | | **SCL** | Serial Clock | Input pin for the I²C clock signal. | | **WC** | Write Control | Hardware write protection (High = Protected, Low = Writable). | | **$V_{CC}$** | Power Supply | 1.8V to 5.5V input. | | **$V_{SS}$** | Ground | Reference ground. | --- ### 4. Part Number Breakdown: M24C02-RMB3T/G Understanding the suffix is critical for procurement and PCB design: * **M24**: STMicroelectronics Standard I²C EEPROM family. * **C02**: Density (2 Kbit). * **-R**: Operating Voltage Range (1.8V to 5.5V). * **MB**: Package type (UFDFPN8 2x3mm). * **3**: Temperature Range (-40°C to +125°C). * **T**: Tape and Reel packaging. * **G**: Process Technology / ECOPACK2 (RoHS compliant/Green). ---