## M95320-RBN6TP: Technical Overview The **M95320-RBN6TP** is a high-performance **Serial SPI EEPROM** (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is widely used for non-volatile data storage in consumer electronics, industrial controllers, and medical devices. ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 32 Kbit (4,000 bytes) | | **Interface** | SPI (Serial Peripheral Interface) | | **Max Clock Frequency** | 20 MHz (at 4.5V - 5.5V) | | **Operating Voltage** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C | | **Package Type** | PDIP8 (Plastic Dual In-line Package) | | **Endurance** | 4 million write cycles | | **Data Retention** | 200 years | --- ### 2. Functional Pinout Description The device typically comes in an 8-pin configuration. Below is the standard pin mapping: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | **S#** | Chip Select (Active Low) | | 2 | **Q** | Serial Data Output | | 3 | **W#** | Write Protect | | 4 | **Vss** | Ground | | 5 | **D** | Serial Data Input | | 6 | **C** | Serial Clock | | 7 | **HOLD#** | Hold (Suspends communication) | | 8 | **Vcc** | Supply Voltage | --- ### 3. Core Features * **Instruction Set:** Supports standard SPI instructions such as `WREN` (Write Enable), `READ` (Read from Memory), and `WRITE` (Write to Memory). * **Block Protection:** Provides software-write protection for parts of the memory (Quarter, Half, or Whole memory array). * **Page Write Mode:** Allows writing up to **32 bytes** in a single write cycle, significantly improving throughput compared to byte-by-byte writing. * **Low Power Consumption:** Features a standby current as low as 2 µA (at 1.8V), making it ideal for battery-powered applications. --- ### 4. Part Number Breakdown: M95320-RBN6TP To understand the specific variant, the suffix is decoded as follows: * **M95**: Family (SPI EEPROM) * **320**: Density (32 Kbit) * **-R**: Operating Voltage (1.8V to 5.5V) * **BN**: Package (PDIP8) * **6**: Temperature range (-40 to 85°C) * **TP**: Tape and Reel Packaging --- ### 5. Common Applications 1. **Calibration Data Storage:** Storing sensor offsets and configuration parameters. 2. **User Settings:** Saving preferences in smart home devices or industrial HMI panels. 3. **Firmware Metadata:** Storing version numbers, bootloader flags, and serial numbers. 4. **Medical Devices:** Reliable logging for small data sets where high endurance is required.