## Overview of the M95320-RMB6 The **M95320-RMB6** is a high-performance, electrically erasable programmable memory (EEPROM) manufactured by **STMicroelectronics**. It is commonly used in applications requiring non-volatile storage with high endurance and data retention. ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Memory Size** | 32 Kbit (4,096 bytes) | | **Interface** | SPI (Serial Peripheral Interface) | | **Clock Frequency** | Up to 20 MHz | | **Operating Voltage** | 1.8V to 5.5V | | **Package Type** | UFDFPN8 (MLP8) - Ultra Thin Fine Pitch Dual Flat No Lead | | **Temperature Range** | -40°C to +85°C | | **Write Cycles** | 4 Million cycles (typical) | | **Data Retention** | 200 Years | --- ### 2. Functional Pins Description The device uses an 8-pin configuration typical of SPI EEPROMs. | Pin | Name | Description | |:---:|:---:|:---| | **1** | **S#** | Chip Select: Activates the device when pulled low. | | **2** | **Q** | Serial Data Output: Sends data out to the host. | | **3** | **W#** | Write Control: Hardware protection for memory contents. | | **4** | **Vss** | Ground. | | **5** | **D** | Serial Data Input: Receives instructions and data. | | **6** | **C** | Serial Clock: Synchronizes data movement. | | **7** | **HOLD#** | Hold: Pauses serial communication without deselecting the device. | | **8** | **Vcc** | Supply Voltage. | --- ### 3. Core Electronic Features * **SPI Modes:** Supports SPI Bus Modes 0 (0,0) and 3 (1,1). * **Block Protection:** Hardware and Software write protection allows the user to lock a quarter, a half, or the entire memory array. * **Page Write:** Supports writing up to 32 bytes in a single instruction cycle, which significantly improves write throughput compared to byte-by-byte writing. * **Low Power Consumption:** Optimized for battery-operated devices with a very low standby current. --- ### 4. Application Areas Because of its small footprint (UFDFPN8) and wide voltage range, the M95320-RMB6 is frequently found in: * **Consumer Electronics:** Wearables and mobile phone modules. * **Industrial:** Parameter storage for sensors and actuators. * **Automotive:** Storing calibration data and error logs in non-safety critical modules.