The **M24C01-RBN6T** is a specific variant of an I2C-compatible Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by STMicroelectronics. It is widely used for storing small amounts of non-volatile configuration data, serial numbers, or calibration settings. --- ### 1. Key Technical Specifications The part number "M24C01-RBN6T" contains specific data about its operating conditions and physical package: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (128 bytes) | | **Interface** | I2C (Two-Wire Serial) | | **Operating Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Package Type** | PDIP8 (Plastic Dual In-line Package, 8 pins) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | | **Write Cycles** | Up to 1 million write cycles | | **Data Retention** | 40 Years | --- ### 2. Pinout Configuration The device uses a standard 8-pin layout common to most serial EEPROMs: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | Chip Enable (Address inputs) | | 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 | --- ### 3. Core Functional Features #### I2C Communication The device acts as a **slave** on the I2C bus. It requires a start condition, an 8-bit device select code (usually `1010` followed by the chip enable bits), and an acknowledgment bit to communicate with a microcontroller. #### Write Protection (WC Pin) The **WC (Write Control)** pin provides hardware data protection: * **Driven Low ($V_{SS}$):** The entire memory array is writable. * **Driven High ($V_{CC}$):** The memory is protected; write instructions are ignored, preventing accidental data corruption. #### Page Write Buffer The device features a **16-byte page write** mode. This allows you to write up to 16 consecutive bytes in a single write cycle, significantly reducing the total time required to program the chip compared to byte-by-byte writing. --- ### 4. Part Number Breakdown (Decoding) To understand this specific variant, the suffix is broken down as follows: * **M24C01**: 1 Kbit Serial I2C EEPROM. * **-R**: Operating voltage range of 1.8V to 5.5V. * **BN**: PDIP8 package (through-hole). * **6**: Industrial temperature range (-40 to 85°C). * **T**: Specific manufacturing process/packaging detail (often related to tape and reel, though PDIPs are usually in tubes). ---