The **M24C04-RMB6TG** is a 4-Kbit serial I2C Bus EEPROM (Electrically Erasable Programmable Memory) manufactured by STMicroelectronics. It is designed for low-power applications and small-form-factor electronics. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 4 Kbit (512 x 8 bits) | | **Interface** | I2C (Two-Wire Serial) | | **Operating Voltage (Vcc)** | 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) | | **Operating Temperature** | -40°C to +85°C | | **Write Cycles** | 4 Million cycles (Endurance) | | **Data Retention** | 200 Years | --- ### 2. Functional Description The device is organized as two blocks of 256 bytes each. It functions as a "Slave" on the I2C bus, allowing a microcontroller (Master) to read and write data to specific addresses. #### Pin Configuration (UFDFPN8) 1. **E1, E2:** Chip Enable inputs (used to determine the device address). 2. **Vss:** Ground. 3. **SDA:** Serial Data (Bidirectional). 4. **SCL:** Serial Clock. 5. **WC:** Write Control (Hardware protection; if connected to Vcc, write operations are inhibited). 6. **Vcc:** Power Supply. --- ### 3. Core Features * **Byte and Page Write:** Supports writing a single byte or a page of up to 16 bytes in a single write cycle (taking approx. 5ms). * **Low Power Consumption:** * Active Read Current: 1 mA * Standby Current: 1 µA (at 1.8V) * **Schmitt Trigger Inputs:** Used for noise filtering on the SCL and SDA lines to ensure stable communication in noisy environments. * **Random and Sequential Read:** Allows the master to read data from any specific address or read the entire memory sequentially. --- ### 4. Part Number Breakdown: `M24C04-RMB6TG` | Code | Meaning | | :--- | :--- | | **M24** | I2C Serial Access EEPROM | | **C04** | 4 Kbit Capacity | | **-R** | Voltage range: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **6** | Temperature range: -40 to +85 °C | | **TG** | Tape & Reel Packing / RoHS Compliant | --- ### 5. Common Applications * **Consumer Electronics:** Storing user settings in smartphones or tablets. * **Wearables:** Storing calibration data or small logs in smartwatches. * **Industrial:** Storing module identification or configuration parameters.