The **M93C86-RDS6TP/W** is a specific variant of a serial Microwire EEPROM (Electrically Erasable Programmable Memory). It is widely used in automotive and industrial applications for storing small amounts of non-volatile configuration data. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 16 Kbit (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) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | | **Write Cycles** | 4 Million cycles | | **Data Retention** | 200 Years | --- ### 2. Part Number Breakdown The suffixing on the part number provides specific details regarding the packaging and manufacturing process: * **M93C86**: The base model (16 Kbit Microwire EEPROM). * **-R**: Indicates the device operates down to **1.8V**. * **D**: Refers to the "Process" or "Design" revision. * **S**: Indicates **TSSOP8** packaging (5 x 3 mm body). * **6**: Temperature range (-40°C to +85°C). * **T**: Tape and Reel packaging. * **P / W**: Indicates Lead-free, RoHS compliant, and specific plating/wafer process codes. --- ### 3. Key Internal Features #### Organization The memory can be organized as either 8-bit bytes or 16-bit words. This is typically controlled by the **ORG** (Organization) pin: * **ORG at VCC**: 1024 x 16-bit organization. * **ORG at GND**: 2048 x 8-bit organization. #### Write Protection The device includes a **Status Register** that tracks if a write cycle is in progress. It also features a "Write Enable" instruction that must be sent before any data can be modified, preventing accidental data corruption during power-up or power-down. #### Sequential Read Unlike some older EEPROMs, this model supports sequential reading, allowing the controller to read the entire memory contents by continuing to provide clock pulses after the first data byte/word is received. --- ### 4. Connection Pins (TSSOP8) ```text +-------U-------+ | 1 S (CS) | 8 (VCC) | S: Chip Select | 2 D (SK) | 7 (PE) | D: Serial Clock | 3 C (DI) | 6 (ORG) | C: Serial Data Input | 4 Q (DO) | 5 (VSS) | Q: Serial Data Output +---------------+ | PE: Program Enable | VSS: Ground ```