## M95010-RBN3P: Technical Overview The **M95010-RBN3P** is a low-voltage, serial SPI (Serial Peripheral Interface) EEPROM (Electrically Erasable Programmable Memory) manufactured by STMicroelectronics. It is commonly used for parameter storage in space-constrained electronic devices. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (128 bytes x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | Up to 5 MHz (at 1.8V) / 20 MHz (at 4.5V) | | **Page Size** | 16 Bytes | | **Write Endurance** | 4 Million cycles | | **Data Retention** | 200 Years | | **Operating Temp** | -40°C to +85°C | --- ### 2. Part Number Breakdown Understanding the suffix codes is crucial for identifying the physical and chemical properties of the component: * **M95010**: Base part number (1 Kbit SPI EEPROM). * **-R**: Operating voltage range (1.8V to 5.5V). * **BN**: Package type (PDIP8 - Plastic Dual In-line Package). * **3**: Temperature range (-40 to +125°C, though standard "P" versions often reference the industrial range). * **P**: ECOPACK2 (RoHS compliant, lead-free). --- ### 3. Pin Configuration The device typically follows the standard 8-pin SPI pinout: | Pin Number | Signal | Description | | :--- | :--- | :--- | | 1 | **S#** | Chip Select (Active Low) | | 2 | **Q** | Serial Data Output (MISO) | | 3 | **W#** | Write Protect | | 4 | **Vss** | Ground | | 5 | **D** | Serial Data Input (MOSI) | | 6 | **C** | Serial Clock | | 7 | **HOLD#** | Hold (Suspends serial communication) | | 8 | **Vcc** | Supply Voltage | --- ### 4. Core Functional Features * **Byte and Page Write:** Allows writing a single byte or a full page (16 bytes) in one cycle. * **Write Protection:** Includes a hardware Write Protect pin and software-defined block protection (status register bits). * **Low Power Consumption:** Optimized for battery-powered applications with low active and standby currents. * **Self-Timed Write Cycle:** The internal write cycle is managed by the chip, typically completing in 5ms. --- ### 5. Common Applications * **Consumer Electronics:** Storing user settings in smart home devices. * **Industrial:** Storing calibration data and device identification. * **Medical:** Data logging for portable diagnostic tools.