## M95128-RMB6TG Electronic Component Overview The **M95128-RMB6TG** is a high-performance Serial Peripheral Interface (SPI) EEPROM (Electrically Erasable Programmable Memory) manufactured by **STMicroelectronics**. It is designed for non-volatile data storage in applications where low power consumption and high reliability are critical. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 128 Kbit (16,384 bytes) | | **Interface** | SPI (Serial Peripheral Interface) | | **Clock Frequency** | Up to 20 MHz | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | --- ### 2. Functional Details #### A. Memory Organization The 128 Kbit memory is organized as **16,384 x 8 bits**. It supports page-based writing, which allows up to **64 bytes** to be written in a single instruction cycle, significantly improving write throughput compared to byte-by-byte writing. #### B. The SPI Protocol The device operates in SPI Mode 0 (0,0) and Mode 3 (1,1). It utilizes four main signals: * **S (Chip Select):** Activates the device. * **D (Serial Data Input):** Receives instructions and data. * **Q (Serial Data Output):** Transfers data out of the device. * **C (Serial Clock):** Synchronizes the data transfer. #### C. Protection Mechanisms * **Write Protect (W):** A hardware pin to lock the memory against write instructions. * **Hold (HOLD):** Pauses serial communication without deselecting the device. * **WIP (Write In Progress) Bit:** A status register bit that indicates if an internal write cycle is active. --- ### 3. Decoding the Part Number (M95128-RMB6TG) | Code Segment | Meaning | | :--- | :--- | | **M95** | STMicroelectronics SPI Family | | **128** | Density (128 Kbits) | | **-R** | Voltage Range: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **6** | Temperature Grade: -40 to 85°C | | **TG** | Packing: Tape & Reel | --- ### 4. Typical Applications Due to its small footprint and low voltage requirements, this part is commonly found in: * **Mobile Devices:** Storing calibration data or user settings. * **Wearables:** Storing biometric data or firmware parameters. * **Industrial Modules:** Storing configuration logs. * **Medical Equipment:** Small-scale non-volatile logging.