The **M24C02-RDS3TP/W** is a specific variant of the standard 2-Kbit I2C Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 bytes x 8 bits) | | **Interface** | I2C (Inter-Integrated Circuit) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) / 1 MHz (Fast Mode Plus) | | **Package Type** | MSOP8 (also known as TSSOP8) | | **Write Cycles** | 4 million write cycles (High endurance) | | **Data Retention** | 200 years | | **Operating Temp** | -40°C to +125°C | --- ## 2. Part Number Breakdown Understanding the suffix codes helps identify the specific features of this chip: * **M24C02**: Base series (I2C, 2-Kbit capacity). * **-R**: Operating voltage range of **1.8V to 5.5V**. * **DS**: Indicates a specific process technology and package variant (MSOP8 / TSSOP8). * **3**: Device grade indicating temperature range **-40°C to +125°C**. * **TP**: Tape & Reel packaging. * **/W**: Indicates the use of a high-reliability "Wafer" or process specific to automotive or industrial standards. --- ## 3. Pin Configuration (MSOP8/TSSOP8) The chip uses a standard 8-pin layout for I2C communication: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | Chip Enable (Address inputs) to allow up to 8 devices on the same bus. | | 4 | VSS | Ground. | | 5 | SDA | Serial Data (Bi-directional). | | 6 | SCL | Serial Clock input. | | 7 | WC | Write Control (Hardware Write Protection). | | 8 | VCC | Supply Voltage. | --- ## 4. Key Functional Features ### I2C Protocol The device acts as a **Slave** on the I2C bus. It supports "Byte Write" and "Page Write" (up to 16 bytes at once), which significantly speeds up data logging processes. ### Write Protection (WC Pin) * If the **WC** pin is tied to **VCC**, the memory is write-protected (read-only mode). * If the **WC** pin is tied to **VSS**, the memory is in normal Read/Write mode. ### Low Power Consumption This part is optimized for battery-powered devices, with a typical standby current of less than **1 µA** at 1.8V. ---