The **M24M01-RMW6P** is a high-density, low-power non-volatile memory chip manufactured by STMicroelectronics. It belongs to the **1-Mbit I²C (Inter-Integrated Circuit)** serial EEPROM family. ### 1. Key Technical Specifications Below are the primary electronic characteristics of the component: | Feature | Specification | | :--- | :--- | | **Memory Size** | 1 Megabit (1,024 Kbits / 128 Kbytes) | | **Interface** | I²C Serial (Two-Wire) | | **Operating Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Maximum Clock Frequency** | 1 MHz (Fast-Mode Plus), 400 kHz, 100 kHz | | **Package Type** | SO8N (8-lead Narrow SOIC) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | | **Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | --- ### 2. Electronic Architecture and Pinout The device uses a standard 8-pin configuration. The pins are critical for power management and communication: | Pin | Name | Description | | :--- | :--- | :--- | | 1, 2, 3 | E1, E2, E3 | **Chip Enable:** Used to set the hardware address (allows multiple chips on the same bus). | | 4 | $V_{SS}$ | **Ground.** | | 5 | SDA | **Serial Data:** Bidirectional pin for transferring data. | | 6 | SCL | **Serial Clock:** Provides the synchronization signal for data transfer. | | 7 | WC | **Write Control:** Hardware protection pin. When high ($V_{CC}$), write operations are inhibited. | | 8 | $V_{CC}$ | **Supply Voltage.** | --- ### 3. Functional Capabilities * **Byte and Page Write:** Supports writing a single byte or a full page of 256 bytes. * **Random and Sequential Read:** Data can be accessed from a specific address or read continuously. * **Device Addressing:** The first byte of any I²C communication (Device Select Code) includes the hardware-defined address pins (E1, E2). * **Low Power Consumption:** * Active Read Current: < 2 mA. * Standby Current: < 5 $\mu$A (at 1.8V). --- ### 4. Application Logic (I²C Implementation) To communicate with the M24M01, a microcontroller must follow the I²C protocol sequence: 1. **Start Condition.** 2. **Device Select Code** (1010 + E2 + E1 + A16 + R/W). 3. **Address Bytes** (Two bytes to specify the 17-bit memory location). 4. **Data Transfer.** 5. **Stop Condition.** ---