The **M93C76-RBN3TG** is a specific type of Non-Volatile Memory (NVM) produced by STMicroelectronics. It belongs to the Microwire bus interface family and is widely used for storing configuration data, calibration parameters, and user settings that must be retained when power is removed. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 x 8 bits or 512 x 16 bits) | | **Interface** | Microwire (3-wire serial) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (at 4.5V) / 1 MHz (at 1.8V) | | **Package Type** | SOT23-6 | | **Temperature Range** | -40°C to +125°C (Automotive Grade 3) | | **Write Cycles** | 4 Million cycles | | **Data Retention** | 200 Years | --- ### 2. Functional Description The device is organized internally as either 8-bit or 16-bit words, depending on the logic level applied to the Organization (ORG) pin (though in the SOT23-6 package, this is often fixed internally). #### Core Components: * **Memory Array:** The 8Kbit EEPROM storage area. * **Instruction Decoder:** Processes commands like READ, WRITE, ERASE, EWEN (Erase/Write Enable), and EWDS (Erase/Write Disable). * **Address Register:** Decodes the specific location in the memory to be accessed. * **Control Logic:** Manages the internal self-timed programming cycle (typically 5ms). --- ### 3. Pinout Configuration (SOT23-6) | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **DO** | Serial Data Output | | 2 | **VSS** | Ground | | 3 | **DI** | Serial Data Input | | 4 | **S** | Chip Select (Active High) | | 5 | **C** | Serial Clock | | 6 | **VCC** | Supply Voltage | --- ### 4. Part Number Breakdown: M93C76-RBN3TG Understanding the suffix helps identify specific environmental and packaging traits: * **M93C76**: Device Type (8 Kbit Microwire EEPROM). * **-R**: Operating Voltage (1.8V to 5.5V). * **BN**: Package (SOT23-6). * **3**: Temperature Range (-40°C to +125°C). * **T**: Packing (Tape & Reel). * **G**: Process Technology (RoHS compliant / Halogen-free). --- ### 5. Application Areas * **Automotive:** Storing odometer data, airbag sensor logs, and infotainment settings. * **Industrial:** Calibration data for sensors and motor controllers. * **Consumer Electronics:** Storing MAC addresses for network devices or user preferences in appliances.