### Overview of M24C08-RMB6TG The **M24C08-RMB6TG** is an 8-Kbit serial $\text{I}^2\text{C}$ (Inter-Integrated Circuit) Electrically Erasable Programmable Read-Only Memory (EEPROM). It is manufactured by STMicroelectronics and is designed for low-power, non-volatile data storage applications. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 bytes) | | **Memory Organization** | 1024 x 8 bits (split into 4 blocks of 256 bytes) | | **Interface** | $\text{I}^2\text{C}$ Serial (2-wire) | | **Supply Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Endurance** | 4 million write cycles | | **Data Retention** | 200 years | --- ### 2. Functional Electronic Components #### A. Internal Memory Array The memory is organized as $1024 \times 8$ bits. Because the $\text{I}^2\text{C}$ protocol uses 8-bit addressing, and 1024 bytes require a 10-bit address, the device utilizes "Device Select" bits within the control byte to switch between the four 256-byte blocks. #### B. The $\text{I}^2\text{C}$ Interface * **SDA (Serial Data):** A bi-directional pin used to transfer data in and out of the device. It requires an external pull-up resistor. * **SCL (Serial Clock):** The input pin used to synchronize all data transfers. * **WC (Write Control):** A hardware protection pin. If connected to $V_{CC}$, write operations are inhibited (read-only mode). If connected to $V_{SS}$ (Ground), the entire memory is writable. #### C. Control Logic * **Start/Stop Detectors:** Recognizes the specific sequences on the $\text{I}^2\text{C}$ bus to initiate or terminate communication. * **Address Decoder:** Decodes the block selection and the specific byte address within that block. * **Voltage Multiplier:** Contains an internal "Charge Pump" to generate the high voltages required to program the EEPROM cells from a low-voltage supply. --- ### 3. Part Number Decoding The suffix **RMB6TG** provides specific details about the manufacturing and packaging: | Suffix Code | Meaning | | :--- | :--- | | **M24C08** | Base Series (8-Kbit $\text{I}^2\text{C}$ EEPROM) | | **-R** | Operating Voltage: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **6** | Temperature Range: -40°C to 85°C | | **TG** | Packing: Tape & Reel, Green (RoHS compliant) | --- ### 4. Typical Application Circuit To integrate this part, a standard pull-up configuration is required for the communication lines: ```c VCC (1.8V - 5.5V) | +-------[ R_pullup (4.7k) ]---+--- SDA | | +-------[ R_pullup (4.7k) ]---+--- SCL | [M24C08] Pin 1-3: A0, A1, A2 (Not used on 8K model, usually GND) Pin 4: VSS (GND) Pin 5: SDA Pin 6: SCL Pin 7: WC (Write Control - Connect to GND for Write Enable) Pin 8: VCC ```