### Overview of M95080-RDS6 The **M95080-RDS6** is a low-voltage, high-speed 8-Kbit Serial SPI (Serial Peripheral Interface) EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. It is commonly used for parameter storage in automotive, industrial, and consumer electronics. --- ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3) | | **Max Clock Frequency** | 20 MHz | | **Operating Voltage (Vcc)** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C | | **Package Type** | TSSOP8 (Thin Shrink Small Outline Package) | | **Write Cycles** | 4 Million Cycles | | **Data Retention** | 200 Years | --- ### Pin Configuration (TSSOP8) The device features 8 pins designed for high-speed serial communication. | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **S#** | Chip Select (Active Low) | | 2 | **Q** | Serial Data Output | | 3 | **W#** | Write Protect (Prevents writing to the status register) | | 4 | **Vss** | Ground | | 5 | **D** | Serial Data Input | | 6 | **C** | Serial Clock | | 7 | **HOLD#** | Pause communication without deselecting the device | | 8 | **Vcc** | Supply Voltage | --- ### Functional Features 1. **Write Protection:** * **Software Protection:** Block protection bits in the Status Register allow the user to protect specific sections of the memory (e.g., quarter, half, or whole memory). * **Hardware Protection:** The `W#` pin can be used to lock the status register to prevent accidental changes to protection settings. 2. **Page Write Mode:** * Supports writing up to **32 bytes** in a single write cycle, which significantly improves throughput compared to byte-by-byte writing. 3. **Hold Condition:** * The `HOLD#` pin allows the microcontroller to pause the SPI transaction if a higher-priority interrupt occurs, resuming later without restarting the command sequence. --- ### Common Applications * **Automotive:** Storing calibration data, odometer readings, and configuration settings. * **Consumer Electronics:** Storing user preferences in smart appliances. * **Industrial:** Storing error logs and device identification data in PLCs or sensors.