## Overview of M93C86-RBN3G The **M93C86-RBN3G** is a specific type of Non-Volatile Memory (NVM). It is a **16-Kbit serial MICROWIRE EEPROM** (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 16 Kbits (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** | PDIP8 (Plastic Dual In-line Package) | | **Temperature Range** | -40°C to +125°C (Automotive Grade 3) | | **Write Cycles** | More than 4 million cycles | | **Data Retention** | More than 200 years | --- ### 2. Part Number Breakdown Understanding the suffix codes helps identify the specific hardware features: * **M93C86**: The base model number (16 Kbit MICROWIRE EEPROM). * **-R**: Indicates the operating voltage range (1.8V to 5.5V). * **BN**: Represents the package type (**PDIP8**, 300 mil width). * **3**: Indicates the temperature range (-40°C to +125°C). * **G**: Denotes **EcoPACK®2** (RoHS compliant, Lead-free/Halogen-free). --- ### 3. Functional Pinout (PDIP8) The device communicates via a simple synchronous serial protocol. | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **S** | Chip Select (Activate device) | | 2 | **C** | Serial Clock (Synchronizes data transfer) | | 3 | **D** | Serial Data Input | | 4 | **Q** | Serial Data Output | | 5 | **Vss** | Ground | | 6 | **ORG** | Organization Select (x8 or x16 mode) | | 7 | **DU** | Don't Use (Must be left unconnected or tied to Vss) | | 8 | **Vcc** | Supply Voltage | --- ### 4. Core Features and Applications #### Features * **User-Configurable Organization**: Through the **ORG** pin, the user can choose to access the memory as 2048 bytes (8-bit) or 1024 words (16-bit). * **Self-Timed Programming**: The chip handles its own internal erase/write timing, meaning the microcontroller doesn't need to manage the write clock. * **Ready/Busy Signal**: During a write cycle, the Data Output (Q) pin can be polled to see if the device has finished its task. #### Common Applications * **Automotive Systems**: Storing calibration data, odometer readings, or user settings in car electronics. * **Industrial Controls**: Parameter storage for PLC modules or sensors. * **Consumer Electronics**: Storing configuration data for appliances or networking equipment.