The **M24C01-RMB3T/G** is a specific variant of an Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by STMicroelectronics. It is part of the I²C serial bus family. --- ## 1. Core Technical Specifications The part number encodes specific characteristics regarding capacity, voltage, and packaging. | Parameter | Value / Description | | :--- | :--- | | **Memory Size** | 1 Kbit (128 bytes x 8 bits) | | **Interface** | I²C (Serial 2-Wire) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Operating Temp** | -40°C to +85°C | --- ## 2. Key Electronic Features ### A. Memory Organization The 1 Kbit memory is organized as **128 bytes**. Internally, it is accessed via a 7-bit page address. It supports: * **Byte Write:** Writing a single 8-bit byte. * **Page Write:** Writing up to 8 bytes in a single write cycle, improving throughput. ### B. I²C Protocol Implementation The device acts as a **Slave** on the I²C bus. * **SCL (Serial Clock):** Used to synchronize data movement. * **SDA (Serial Data):** Bi-directional pin for sending and receiving data. * **Device Address:** Usually hardcoded for this density, typically `1010xxx` in binary. ### C. Write Protection The chip includes a **Write Control (WC)** pin: * If **WC is High (Vcc)**, the memory is write-protected (read-only). * If **WC is Low (GND)**, the memory can be written to. ### D. Endurance and Retention * **Write Cycles:** Up to 4 million write cycles (extremely high durability). * **Data Retention:** Over 200 years, making it ideal for long-term configuration storage. --- ## 3. Package Detail: UFDFPN8 (MLP) The suffix **"MB"** in the part number refers to the **UFDFPN8** package (also known as DFN8). * **Dimensions:** Roughly 2x3 mm. * **Leadless:** It uses pads on the bottom of the package rather than pins sticking out, which saves vertical space and reduces parasitic inductance. * **Thermal Pad:** Usually has an exposed pad that should be soldered to the PCB ground for mechanical stability. --- ## 4. Pin Configuration (UFDFPN8) | Pin # | Name | Function | | :--- | :--- | :--- | | 1-3 | E0, E1, E2 | Chip Enable (Address inputs) | | 4 | VSS | Ground | | 5 | SDA | Serial Data | | 6 | SCL | Serial Clock | | 7 | WC | Write Control | | 8 | VCC | Supply Voltage | --- ## 5. Typical Applications * **Parameter Storage:** Storing calibration data or user settings in small IoT devices. * **ID/Serial Numbers:** Storing unique identification for hardware modules. * **LCD Modules:** Storing display configuration profiles.