## Technical Overview: M95128-RMB6G/PC The **M95128-RMB6G/PC** is a high-performance, high-reliability Electrically Erasable Programmable Read-Only Memory (**EEPROM**) manufactured by STMicroelectronics. It is designed for applications requiring non-volatile storage with a Serial Peripheral Interface (SPI). --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 128 Kbit (16,384 x 8 bits) | | **Interface** | SPI (Serial Peripheral Interface) | | **Clock Frequency** | Up to 20 MHz (at 5V) | | **Operating Voltage** | 1.8V to 5.5V (Wide Range) | | **Page Size** | 64 Bytes | | **Operating Temp** | -40°C to +85°C | | **Package** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | --- ### 2. Functional Electronic Features * **SPI Modes:** Supports SPI Bus Modes 0 ($0,0$) and 3 ($1,1$). * **Write Protection:** * **Software Protection:** Programmable block protection (None, 1/4, 1/2, or Whole memory). * **Hardware Protection:** Dedicated `WP` pin to lock the Status Register. * **High Endurance:** Rated for **4 million write cycles** and **200 years of data retention**, making it suitable for automotive and industrial data logging. * **Byte/Page Write:** Supports writing a single byte or a full page of 64 bytes in approximately 5ms. --- ### 3. Pinout Configuration The device typically uses an 8-pin layout: | Pin Name | Description | | :--- | :--- | | **S** | Chip Select (Active Low) | | **D** | Serial Data Input (MOSI) | | **Q** | Serial Data Output (MISO) | | **C** | Serial Clock | | **W** | Write Control / Protect | | **HOLD** | Pause Communication | | **Vcc / Vss** | Power Supply / Ground | --- ### 4. Part Number Breakdown (Suffix Meaning) The specific suffix **RMB6G/PC** provides details on the physical and chemical properties: * **R:** Operating voltage range (1.8V to 5.5V). * **MB:** Package type (UFDFPN8, 2x3mm). * **6:** Industrial temperature range (-40°C to 85°C). * **G:** ECOPACK2 (RoHS compliant, Halogen-free). * **PC:** Specific process/packaging code for high-reliability/automotive-grade logistics. --- ### 5. Application Use Cases 1. **Consumer Electronics:** Storing configuration settings in cameras or smart home devices. 2. **Industrial:** Storing calibration data and error logs for sensors. 3. **Automotive:** Parameter storage for ECU (Electronic Control Units) due to high write endurance.