The **M24C01-RDS3T** is a 1 Kbit serial I²C (Inter-Integrated Circuit) Bus EEPROM (Electrically Erasable Programmable Memory) manufactured by STMicroelectronics. It is designed for low-power, low-voltage applications. --- ### 1. Key Technical Specifications | Parameter | Details | | :--- | :--- | | **Memory Size** | 1 Kbit (128 x 8 bits) | | **Interface** | I²C Serial (2-wire) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz | | **Package Type** | TSSOP8 (Thin Shrink Small Outline Package) | | **Operating Temperature** | -40°C to +125°C | | **Write Cycles** | 4 million cycles (typical) | | **Data Retention** | 200 years | --- ### 2. Pin Configuration (TSSOP8) | Pin Number | Name | Function | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | Chip Enable inputs (used to set the device address) | | 4 | VSS | Ground | | 5 | SDA | Serial Data (bidirectional) | | 6 | SCL | Serial Clock | | 7 | WC | Write Control (Hardware protection) | | 8 | VCC | Supply Voltage | --- ### 3. Core Features & Functionality #### I²C Protocol The device operates as a slave on the I²C bus. It requires a Master (like a microcontroller) to initiate data transfers and generate the clock signal. #### Write Protection (WC Pin) The **WC** (Write Control) pin is a hardware safety feature: * **If WC is High (VCC):** The entire memory contents are protected (Read-only). * **If WC is Low (VSS):** The memory is unprotected and can be written to. #### Power Modes The M24C01 series is designed for efficiency: * **Active Current:** ~2 mA during a Write cycle. * **Standby Current:** < 1 µA (at 1.8V), making it ideal for battery-powered devices. #### Byte and Page Write * **Byte Write:** Allows changing a single byte of data. * **Page Write:** Allows writing up to 8 bytes in a single instruction cycle, which significantly speeds up memory programming. --- ### 4. Typical Applications * **Configuration Storage:** Storing calibration data or user settings in consumer electronics. * **Device Identification:** Storing serial numbers or MAC addresses. * **Industrial Sensors:** Recording environmental parameters or error logs in harsh temperature conditions. ---