## Overview of BR24C01-RDS6TP The **BR24C01-RDS6TP** is a 1-Kbit serial I2C EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **ROHM Semiconductor**. It is designed for low-power applications where non-volatile data storage is required. --- ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Capacity** | 1 Kbit (128 words × 8 bits) | | **Interface** | I2C Bus (2-wire serial interface) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) | | **Write Cycles** | 1,000,000 cycles | | **Data Retention** | 40 Years | | **Package Type** | MSOP8 / TSSOP-B8 | | **Operating Temp** | -40°C to +85°C | --- ### Internal Functional Blocks The device consists of several critical electronic sections: 1. **Memory Array**: The 1024-bit core where data is physically stored in floating-gate transistors. 2. **I/O Control Logic**: Handles the SDA (Serial Data) and SCL (Serial Clock) signals to synchronize data transfer between the master (MCU) and the EEPROM. 3. **Address Decoder**: Translates the incoming 7-bit binary address into the physical row and column location in the memory grid. 4. **Voltage Generator (Charge Pump)**: An internal circuit that boosts the input voltage to the high level required for tunneling electrons during "Write" and "Erase" operations. 5. **Write Protect (WP)**: A hardware pin that, when tied to VCC, prevents any data from being written to the memory, ensuring data integrity against accidental overwrites. --- ### Pin Configuration | Pin Number | Name | Function | | :--- | :--- | :--- | | 1, 2, 3 | A0, A1, A2 | Device Address Inputs (Hardwired to set the I2C ID) | | 4 | GND | Ground | | 5 | SDA | Serial Data (Bidirectional) | | 6 | SCL | Serial Clock Input | | 7 | WP | Write Protect (High = Protected) | | 8 | VCC | Power Supply | --- ### Implementation Example (I2C) To interface this chip with an Arduino or similar microcontroller, you would typically use the `Wire.h` library. ```cpp #include #define EEPROM_ADDR 0x50 // Standard base address for BR24C01 void setup() { Wire.begin(); // Write "A" to memory address 0x00 Wire.beginTransmission(EEPROM_ADDR); Wire.write(0x00); // Internal Address Wire.write('A'); // Data Wire.endTransmission(); delay(5); // Required write cycle time } ```