The **M24C01-RBN3TP/S** is a specific variant of an Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by STMicroelectronics. It is commonly used for storing small amounts of non-volatile data, such as configuration settings or calibration constants. --- ### 1. Key Technical Specifications The table below outlines the primary electrical and physical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (128 bytes x 8 bits) | | **Interface** | I²C (Inter-Integrated Circuit) | | **Supply Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Write Cycle Time** | 5 ms (Maximum) | | **Data Retention** | > 200 Years | | **Endurance** | 4 million write cycles | | **Package Type** | DIP8 (Dual In-line Package) | --- ### 2. Functional Components The internal architecture of the M24C01-R includes several critical electronic blocks: 1. **I²C Interface Logic:** Manages the Serial Data (SDA) and Serial Clock (SCL) signals. It handles start/stop conditions and device addressing. 2. **Control Logic:** Decodes commands (Read or Write) and manages the internal timings for the EEPROM array. 3. **Charge Pump:** An internal voltage multiplier that generates the high voltage required to program (write) the floating-gate transistors. 4. **EEPROM Array:** The physical 128-byte storage area organized into rows and columns. 5. **Data Register:** Acts as a buffer to hold data during transmission between the I²C bus and the memory array. --- ### 3. Pinout Description (DIP8) | Pin Number | Symbol | Function | | :--- | :--- | :--- | | 1-3 | E0, E1, E2 | Chip Enable inputs (used to set the device address). | | 4 | $V_{SS}$ | Ground. | | 5 | SDA | Serial Data (bidirectional). | | 6 | SCL | Serial Clock (input). | | 7 | WC | Write Control (Hardware protection). | | 8 | $V_{CC}$ | Supply Voltage. | --- ### 4. Part Number Breakdown: M24C01-RBN3TP/S The nomenclature reveals specific details about the part's grading and packaging: * **M24**: I²C family of EEPROMs. * **C01**: Density (1 Kbit). * **-R**: Operating voltage range (1.8V to 5.5V). * **BN**: Package type (Plastic DIP8). * **3**: Temperature range (-40°C to +125°C). * **TP/S**: Tape & Reel packaging with specific finish/process variations. --- ### 5. Application Code Example (Arduino/C++) To communicate with this chip, you would typically use an I²C library. ```cpp #include #define EEPROM_ADDR 0x50 // Standard base address for M24C01 void writeEEPROM(int address, byte data) { Wire.beginTransmission(EEPROM_ADDR); Wire.write(address); // Memory location Wire.write(data); // Data to store Wire.endTransmission(); delay(5); // Wait for internal write cycle } ```