The **M95010-RBN3TP** is a specific part number for a 1 Kbit Serial SPI (Serial Peripheral Interface) EEPROM manufactured by **STMicroelectronics**. It is widely used for non-volatile parameter storage in automotive and industrial applications. --- ## 1. Key Specifications The table below outlines the core technical parameters of the M95010-RBN3TP: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (128 bytes x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3 supported) | | **Clock Frequency** | Up to 20 MHz | | **Operating Voltage** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | TSSOP8 (Thin Shrink Small Outline Package) | | **Write Cycles** | 4 Million (Endurance) | | **Data Retention** | 200 Years | --- ## 2. Pin Configuration (TSSOP8) The device features an 8-pin layout standard for serial memory components: | Pin Name | Function | Description | | :--- | :--- | :--- | | **S** | Chip Select | Activates the device when pulled low. | | **D** | Serial Data Input | Receives instructions, addresses, and data. | | **Q** | Serial Data Output | Sends data out during read operations. | | **C** | Serial Clock | Synchronizes data transfer. | | **W** | Write Control | Hardware protection against write operations. | | **HOLD** | Hold | Pauses communication without resetting the CS. | | **Vcc / Vss** | Power Supply | Voltage supply and Ground. | --- ## 3. Core Features and Functionality ### SPI Protocol The device operates using the Serial Peripheral Interface, allowing high-speed data transfer compared to I2C. It utilizes four main signals (S, C, D, Q) to communicate with a microcontroller. ### Memory Protection * **Software Protection:** Uses a status register to define "Read-Only" blocks (none, quarter, half, or whole memory). * **Hardware Protection:** The `W` pin can be used to lock the status register to prevent accidental overwrites. ### Page Write Mode The M95010 supports writing up to **16 bytes** in a single page write cycle, which significantly improves write efficiency compared to byte-by-byte writing. --- ## 4. Part Number Breakdown Understanding the specific suffix **-RBN3TP**: * **M95010**: Device family (1 Kbit SPI EEPROM). * **-R**: Range of operating voltage (1.8V to 5.5V). * **BN**: Package (TSSOP8). * **3**: Temperature range (-40°C to +125°C). * **TP**: Packing (Tape and Reel).