The **M93C76-RMB3P/S** is a specialized serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip manufactured by **STMicroelectronics**. It is designed for low-voltage applications and is frequently used for parameter storage in automotive and industrial electronics. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 x 8-bit or 512 x 16-bit) | | **Interface** | Microwire (3-wire Serial) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Operating Temp** | -40°C to +125°C | | **Data Retention** | > 40 Years | | **Write Endurance** | 4 Million write cycles | --- ## 2. Key Features * **User-Selectable Organization:** The memory can be configured as either 8-bit bytes or 16-bit words depending on the logic state of the Organization (ORG) pin. * **Write Protection:** Includes a software write-protection mechanism to prevent accidental data corruption. * **Low Power Consumption:** Optimized for battery-operated devices with a very low standby current. * **Self-Timed Write Cycle:** The chip handles the internal timing of the erasure and writing process, typically completing in 5ms. * **Sequential Read:** Allows for the continuous reading of the entire memory contents via a single command. --- ## 3. Part Number Breakdown (Nomenclature) Understanding the suffix codes helps in identifying specific environmental and packaging standards: | Code | Meaning | | :--- | :--- | | **M93C76** | Device Family (8 Kbit Microwire EEPROM) | | **-R** | Voltage Range: 1.8V to 5.5V | | **MB** | Package: UFDFPN8 (2x3 mm) | | **3** | Temperature Range: -40 to +125 °C (Automotive Grade) | | **P/S** | Packing/Process: Likely indicates RoHS compliance and Tape & Reel packaging | --- ## 4. Pin Configuration (UFDFPN8) The device typically follows this pinout structure: ```text 1. S (Chip Select) 2. C (Serial Clock) 3. D (Serial Data Input) 4. Q (Serial Data Output) 5. Vss (Ground) 6. ORG (Organization Select) 7. DU (Don't Use / No Connect) 8. Vcc (Supply Voltage) ``` ---