## Technical Overview of the M24C04-RMB3TG The **M24C04-RMB3TG** is a 4-Kbit serial I²C (Inter-Integrated Circuit) EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. It is designed for low-power and low-voltage applications. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 4 Kbit (512 bytes) | | **Memory Organization** | 2 blocks of 256 bytes (512 x 8 bits) | | **Interface** | I²C Serial (2-wire) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Write Cycle Time** | 5 ms (Max) | | **Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical and Package Details The suffix `RMB3TG` provides specific information regarding the physical characteristics: * **Package Type:** **UFDFPN8** (Ultra-thin Fine-pitch Dual Flat No-lead, 8 pins). * **Dimensions:** Very small footprint (2x3 mm), ideal for mobile and wearable devices. * **RoHS Compliant:** The "G" indicates it is lead-free and halogen-free. --- ### 3. Pin Configuration (UFDFPN8) | Pin Number | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | Chip Enable (Used to define the device address) | | 4 | Vss | Ground | | 5 | SDA | Serial Data (Bi-directional) | | 6 | SCL | Serial Clock (Input) | | 7 | WC | Write Control (Hardware protection) | | 8 | Vcc | Supply Voltage | --- ### 4. Core Features * **Write Protection (WC Pin):** A hardware pin that, when connected to $V_{cc}$, protects the entire memory contents from being modified. * **Byte and Page Write:** Supports writing a single byte or a full page (16 bytes) in one cycle. * **Random and Sequential Read:** Data can be read from any address or in a continuous stream. * **Schmitt Trigger Inputs:** Used for noise filtering on the SCL and SDA lines to ensure stable communication. --- ### 5. Common Applications Due to its small size and low voltage requirements, it is commonly found in: 1. **Consumer Electronics:** Storing user settings in cameras or smartphones. 2. **Identification:** Storing serial numbers or calibration data. 3. **Industrial:** Storing configuration parameters for sensors. 4. **Medical:** Small portable diagnostic tools.