## M95320-RMB3TG/B Electronic Component Overview The **M95320-RMB3TG/B** is a specific variant of the M95320 series manufactured by **STMicroelectronics**. It is a high-performance, Serial Peripheral Interface (SPI) Electrically Erasable Programmable Read-Only Memory (EEPROM). --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Memory Size** | 32 Kbit (4,096 x 8 bits) | | **Interface** | SPI (Serial Peripheral Interface) | | **Clock Frequency** | Up to 20 MHz | | **Operating Voltage (Vcc)** | 1.8V to 5.5V (R-range) | | **Operating Temperature** | -40°C to +125°C (Automotive Grade 1) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Write Cycles** | More than 4 million cycles | | **Data Retention** | Over 200 years | --- ### 2. Part Number Breakdown: M95320-RMB3TG/B Understanding the suffix helps identify the specific environmental and packaging standards: * **M95**: Family (SPI Serial Access EEPROM). * **320**: Density (32 Kbit). * **-R**: Supply Voltage (1.8V to 5.5V). * **MB**: Package (UFDFPN8, 2x3 mm). * **3**: Temperature Range (-40 to +125 °C). * **TG**: Tape and Reel Packing / Gold-wire bonding. * **/B**: Process or specific fab identification (often related to automotive qualification). --- ### 3. Core Features and Functionality * **SPI Modes**: Supports SPI Bus Modes 0 and 3, allowing for high-speed data synchronization with microcontrollers. * **Byte and Page Write**: Allows writing of a single byte or a full page (up to 32 bytes) in a single cycle. * **Write Protection**: * **Hardware Protection**: Via the Write Protect (`/WP`) pin. * **Software Protection**: Configurable write-disable instructions and block protection bits in the Status Register. * **Enhanced Reliability**: Specifically designed for automotive applications, featuring high robustnes against EMI and ESD. --- ### 4. Typical Applications Due to its high temperature rating and SPI speed, this part is commonly found in: 1. **Automotive Systems**: ECU (Engine Control Units), ADAS sensors, and dashboard modules. 2. **Industrial Controllers**: Storing configuration parameters and calibration data in harsh environments. 3. **Medical Devices**: High-reliability data logging.