## Technical Overview: M24C08-RBN3TP The **M24C08-RBN3TP** is an 8-Kbit serial I²C bus EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is designed for low-power, low-voltage applications. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 x 8 bits) | | **Interface** | I²C (Serial 2-Wire) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) / 1 MHz (Fast Mode Plus) | | **Package Type** | DIP8 / SO8 / TSSOP8 (BN = Plastic DIP) | | **Operating Temp** | -40°C to +85°C | | **Write Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | --- ### 2. Pin Configuration and Functions The device typically comes in an 8-pin package. Below is the functional mapping for the pins: | Pin | Name | Description | | :--- | :--- | :--- | | **1, 2, 3** | E0, E1, E2 | Chip Enable (Address inputs to differentiate multiple devices on the same bus). | | **4** | VSS | Ground (0V). | | **5** | SDA | Serial Data (Bidirectional data transfer). | | **6** | SCL | Serial Clock (Synchronizes data movement). | | **7** | WC | Write Control (Hardware protection; if High, write operations are inhibited). | | **8** | VCC | Supply Voltage. | --- ### 3. Core Features * **Byte and Page Write:** Supports writing a single byte or a page of up to 16 bytes. * **Random and Sequential Read:** Allows reading from a specific address or continuous reading through the entire memory map. * **Write Protection:** The **WC (Write Control)** pin provides hardware-based security to prevent accidental data overwriting. * **Low Power Consumption:** * Active Read Current: < 1 mA * Standby Current: < 1 µA (at 1.8V) --- ### 4. Part Number Breakdown: M24C08-RBN3TP Understanding the suffix codes is critical for replacement or PCB design: * **M24**: I²C family of EEPROMs. * **C08**: 8 Kbit capacity. * **-R**: Range of operating voltage (1.8V to 5.5V). * **BN**: Plastic Dual-in-line package (PDIP8). * **3**: Range 3 temperature (-40 to +125°C) or specific manufacturing process. * **TP**: Tape & Reel packaging (Standard for automated assembly). --- ### 5. Typical Application Circuit To interface the M24C08 with a microcontroller (like an Arduino or STM32), pull-up resistors are required on the I²C lines. ```cpp // Typical I2C Pull-up Resistance // VCC (3.3V) --- [4.7k Ohm Resistor] --- SDA // VCC (3.3V) --- [4.7k Ohm Resistor] --- SCL ```