The **M93C86-RDS3TP/W** is a specific variant of a serial Microwire EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications | Feature | Description | | :--- | :--- | | **Memory Size** | 16 Kbit (2,048 bytes) | | **Organization** | Configurable: 2048 x 8 bits OR 1024 x 16 bits | | **Interface** | Microwire (3-wire serial interface) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (at 4.5V - 5.5V) | | **Package Type** | TSSOP8 (Thin Shrink Small Outline Package) | --- ### 2. Suffix Breakdown (Part Number Decoding) The alphanumeric string provides specific details about the component's physical and chemical properties: * **M93C86**: Base part number for the 16 Kbit Microwire EEPROM. * **-R**: Indicates the operating voltage range (1.8V to 5.5V). * **D**: Device revision or specific process technology. * **S**: Indicates the TSSOP8 package (3mm width). * **3**: Temperature range (-40°C to +125°C), suitable for automotive/industrial use. * **TP**: Tape and Reel packaging. * **W**: High reliability or specific lead-free/halogen-free finishing (ECOPACK2). --- ### 3. Key Electronic Features * **Self-Timed Write Cycle:** The device manages the internal erase/write timing automatically, typically within **5ms**. * **Sequential Read:** Data can be read continuously after the first address is sent. * **Data Retention:** Rated for over **40 years** at room temperature. * **Endurance:** Capable of **4 million** write cycles per byte. * **Write Protection:** Includes a "Write Enable" and "Write Disable" instruction set to prevent accidental data corruption. --- ### 4. Pin Configuration (TSSOP8) ```text +-------U-------+ | 1 S (CS) 8 | VCC | 2 C (SK) 7 | PE (Program Enable) | 3 D (DI) 6 | ORG (Organization) | 4 Q (DO) 5 | VSS (GND) +---------------+ ``` * **CS (Chip Select):** High level activates the device. * **SK (Serial Clock):** Synchronizes data movement. * **DI (Serial Data Input):** Receives instructions and data. * **DO (Serial Data Output):** Outputs data to the MCU. * **ORG (Organization):** If tied to VCC, memory is 1024 x 16; if tied to GND, it is 2048 x 8. ---