## Technical Overview: M93C86-RMB6TG The **M93C86-RMB6TG** is a high-performance, low-voltage **EEPROM** (Electrically Erasable Programmable Read-Only Memory) chip manufactured by STMicroelectronics. It belongs to the MICROWIRE bus family, commonly used for non-volatile data storage in industrial and automotive applications. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 16 Kbit (2,048 x 8 bits or 1,024 x 16 bits) | | **Interface** | MICROWIRE (3-wire serial) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (@ 5V), 1 MHz (@ 1.8V) | | **Package Type** | UFDFPN8 (MLP8) - 2x3 mm | | **Operating Temperature** | -40°C to +85°C | | **Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | --- ### 2. Electronic Architecture & Pins The device is designed with a flexible architecture that allows the user to define the word width (8-bit or 16-bit) via the **ORG** pin. #### Pin Configuration (UFDFPN8) | Pin # | Name | Description | | :--- | :--- | :--- | | 1 | **S** | Chip Select (Active High) | | 2 | **C** | Serial Clock | | 3 | **D** | Serial Data Input | | 4 | **Q** | Serial Data Output | | 5 | **Vss** | Ground | | 6 | **ORG** | Organization Select (High = x16, Low/Floating = x8) | | 7 | **DU** | Don't Use (Must be connected to Vss or left floating) | | 8 | **Vcc** | Supply Voltage | --- ### 3. Core Features * **Self-Timed Programming:** The chip includes an internal timer that manages the write cycle, meaning the system MCU does not need to manage the erase/write timing. * **Ready/Busy Status:** During a write cycle, the Data Output (Q) pin can be polled to check if the memory is busy or ready for the next instruction. * **Sequential Read:** It supports reading the entire memory contents through a single instruction by continuing to provide clock pulses. * **Power-On Data Protection:** Includes a specific circuit to prevent "ghost" writes during power-up or power-down sequences. --- ### 4. Part Number Breakdown Understanding the suffix **RMB6TG**: * **R**: Operating Voltage (1.8V to 5.5V). * **MB**: Package type (UFDFPN8, 2x3 mm). * **6**: Industrial temperature range (-40°C to +85°C). * **T**: Tape and Reel packing. * **G**: ECOPACK2 (RoHS compliant/Lead-free). --- ### 5. Common Applications * **Consumer Electronics:** Storing calibration data in cameras or displays. * **Industrial:** Parameter storage for sensors and motor controllers. * **Automotive:** Storing odometer data or user preferences in infotainment systems.