The **M93C56-RMB6P** is a specific variant of the 2-Kbit serial MICROWIRE EEPROM (Electrically Erasable Programmable Memory) manufactured by STMicroelectronics. --- ### 1. Key Technical Specifications The part number provides specific details about its architecture and operating conditions: | Feature | Specification | | :--- | :--- | | **Memory Size** | 2 Kbit (2048 bits) | | **Organization** | 128 x 16 bit or 256 x 8 bit (User selectable) | | **Interface** | MICROWIRE (3-wire serial interface) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (at 5V) | | **Package** | MSOP8 (also known as TSSOP8) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | --- ### 2. Functional Description This device is non-volatile memory, meaning it retains stored data even when the power is turned off. It is primarily used for storing configuration data or small amounts of user information. #### Pin Configuration (MSOP8) 1. **S (Chip Select):** Activates the device for communication. 2. **C (Serial Clock):** Synchronizes data transfer. 3. **D (Serial Data Input):** Receives instructions and data. 4. **Q (Serial Data Output):** Sends data out to the microcontroller. 5. **VSS:** Ground. 6. **ORG (Organization):** Sets the memory width (High for x16, Low/Floating for x8). 7. **DU (Don't Use):** Usually left unconnected. 8. **VCC:** Supply Voltage. --- ### 3. Part Number Breakdown The suffix **RMB6P** provides specific manufacturing information: * **R:** Operating Voltage (1.8V to 5.5V). * **M:** Package type (MSOP8/TSSOP8 3x3mm). * **B:** Standard reliability / Green package. * **6:** Industrial temperature range (-40 to 85°C). * **P:** RoHS compliant and Antimony-free. --- ### 4. Features & Reliability * **Write Cycles:** Supports more than 1 million write cycles. * **Data Retention:** Greater than 40 years. * **Ready/Busy Signal:** The `Q` pin can signal the end of an internal write cycle, allowing the system to optimize timing. * **Self-Timed Programming:** The device manages the internal erase/write timing automatically. ---