## Overview of M24C02-RBN6TP The **M24C02-RBN6TP** is a 2-Kbit serial I²C Bus EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. It is widely used for storing small amounts of data that must be preserved when power is removed, such as configuration settings, device IDs, or calibration data. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and operational characteristics of the device: | Feature | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (256 bytes x 8 bits) | | **Interface** | I²C (Two-wire serial interface) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Write Cycle Time** | 5 ms (Maximum) | | **Endurance** | 4 million write cycles | | **Data Retention** | 200 years | | **Operating Temp** | -40°C to +85°C | | **Package** | PDIP8 (Plastic Dual-in-line Package) | --- ### 2. Pinout Configuration The M24C02-RBN6TP typically comes in an 8-pin package. Each pin serves a specific function for communication or power: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | **Chip Enable:** Used to define the device's I²C address (allows multiple devices on the same bus). | | 4 | VSS | **Ground:** 0V reference. | | 5 | SDA | **Serial Data:** Bi-directional pin for data transfer. | | 6 | SCL | **Serial Clock:** Input for synchronization. | | 7 | WC | **Write Control:** Hardware protection (if HIGH, write operations are inhibited). | | 8 | VCC | **Supply Voltage:** 1.8V to 5.5V. | --- ### 3. Functional Features * **Byte and Page Write:** The device supports writing a single byte or a page of up to 16 bytes. * **Random and Sequential Read:** Data can be read starting from a specific address or sequentially from the current address. * **Write Protection:** The `WC` pin provides hardware-level security. When connected to VCC, the entire memory becomes read-only. * **Low Power Consumption:** It features a very low active current (approx. 2mA) and a standby current of less than 1µA. --- ### 4. Implementation Example (Pseudo-Code) To interact with the M24C02 via I²C, the following logic is generally applied: ```c // Example: Writing 0xAA to address 0x10 I2C_Start(); I2C_Send_DeviceAddress(0xA0); // Device ID + Write bit I2C_Send_WordAddress(0x10); // Memory location I2C_Send_Data(0xAA); // Data to store I2C_Stop(); Delay(5ms); // Wait for internal write cycle ``` ---