## Technical Overview: M93C86-RMB3T The **M93C86-RMB3T** is a specific variant of the 16-Kbit serial MICROWIRE EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by **STMicroelectronics**. It is widely used for non-volatile storage in automotive and industrial applications. --- ### 1. Device Specifications The following table highlights the core electronic characteristics of the M93C86-RMB3T: | Feature | Specification | | :--- | :--- | | **Memory Size** | 16 Kbit (2048 x 8 bits or 1024 x 16 bits) | | **Interface** | MICROWIRE (3-Wire Serial) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (at 4.5V - 5.5V) | | **Package Type** | UFDFPN8 (MLP8) - Ultra thin fine pitch dual flat no lead | | **Temperature Range** | -40°C to +125°C (Automotive Grade 3) | | **Data Retention** | > 40 Years | | **Write Cycles** | > 1,000,000 Cycles | --- ### 2. Key Electronic Features * **Organization:** The memory structure is user-selectable. Depending on the logic state of the "Organization" (ORG) pin, it can function as 2048 bytes (x8) or 1024 words (x16). * **Low Power Consumption:** Designed for battery-operated devices, featuring a low supply current (typical 1 mA for read/write) and a standby current of less than 1 µA. * **Self-Timed Write Cycle:** The device includes an internal timer. Once a write command is initiated, the device manages the erasing and programming of the memory cell automatically. * **Ready/Busy Signal:** During a write cycle, the Data Out (DO) pin can be used to poll the status of the operation (High = Ready, Low = Busy). * **Sequential Read:** Allows for continuous data streaming from the memory without needing to send new addresses for each word. --- ### 3. Pin Configuration (UFDFPN8) The device typically utilizes an 8-pin layout: | Pin Name | Function | | :--- | :--- | | **S (CS)** | Chip Select (Active High) | | **D (SI)** | Serial Data Input | | **Q (SO)** | Serial Data Output | | **C (SK)** | Serial Clock | | **ORG** | Organization Select (x8 or x16) | | **Vcc / Vss** | Power Supply / Ground | --- ### 4. Part Number Breakdown The suffix **RMB3T** provides specific details about the physical and chemical properties: * **R:** Operating Voltage (1.8V to 5.5V). * **MB:** Package (UFDFPN8, 2x3 mm). * **3:** Temperature Range (-40 to +125 °C). * **T:** Packing (Tape and Reel). ---