## Technical Overview of M24C32-RMB6TG The **M24C32-RMB6TG** is a 32-Kbit serial I²C bus EEPROM (Electrically Erasable Programmable Memory) manufactured by STMicroelectronics. It is designed for low-power applications and is commonly used for parameter storage in consumer electronics and industrial devices. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 32 Kbits (4,096 x 8 bits) | | **Interface** | I²C (Inter-Integrated Circuit) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Clock Frequency** | 400 kHz (Fast Mode) / 1 MHz (Fast Mode Plus) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Operating Temp** | -40°C to +85°C | | **Write Cycles** | 4 million cycles (at 25°C) | | **Data Retention** | 200 years | --- ### 2. Core Functional Features * **Byte and Page Write:** Supports writing a single byte or a page of up to 32 bytes. * **Write Protection (WP):** A hardware pin that allows the memory to be write-protected (read-only) when connected to Vcc. * **Device Addressing:** Uses a 7-bit device address. Multiple chips can be connected to the same bus by configuring the hardware address pins ($E_0, E_1, E_2$). * **Low Consumption:** * Active Read Current: < 1 mA * Standby Current: < 1 µA (at 1.8V) --- ### 3. Pinout Configuration (UFDFPN8) | Pin Number | Name | Function | | :--- | :--- | :--- | | 1, 2, 3 | E0, E1, E2 | Chip Enable (Address Inputs) | | 4 | Vss | Ground | | 5 | SDA | Serial Data I/O | | 6 | SCL | Serial Clock Input | | 7 | WC | Write Control (Write Protect) | | 8 | Vcc | Supply Voltage | --- ### 4. Implementation Example To communicate with the M24C32 using a microcontroller (like an Arduino or STM32), the device address is typically `0xA0` (for Write) and `0xA1` (for Read), assuming all address pins are grounded. ```cpp // Example: Basic I2C Write logic (Pseudocode) Wire.beginTransmission(0x50); // 7-bit Address (0xA0 >> 1) Wire.write(0x00); // High Address Byte Wire.write(0x10); // Low Address Byte Wire.write(data_byte); // Data to store Wire.endTransmission(); ``` --- ### 5. Part Number Breakdown: M24C32-RMB6TG * **M24**: I²C Serial Access EEPROM. * **C32**: 32 Kbit density. * **-R**: Operating voltage range (1.8V to 5.5V). * **MB**: UFDFPN8 (MLP8) package. * **6**: Industrial temperature range (-40 to 85°C). * **TG**: Tape and Reel packing / Green (Lead-free).