The **M93C76-RBN3TP** is a specific type of non-volatile memory chip manufactured by STMicroelectronics. It belongs to the Microwire bus interface family of EEPROMs. --- ### 1. Key Technical Specifications The part number indicates specific characteristics regarding capacity, voltage, and packaging: | Feature | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (organized as 1024 x 8-bit or 512 x 16-bit) | | **Interface** | Microwire (Serial 3-wire) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz | | **Package** | SOT23-5 (5-lead Small Outline Transistor) | | **Temperature Range** | -40°C to +125°C (Automotive Grade 3) | | **Write Cycles** | 4 Million write cycles | | **Data Retention** | 200 Years | --- ### 2. Functional Description The device is used for storing small amounts of data that must be preserved when power is removed. * **User-Configurable Organization:** The memory can be configured as either 8-bit bytes or 16-bit words depending on the logic level applied to the Organization (ORG) pin (though in 5-pin packages like the SOT23, this is often fixed internally). * **Write Protection:** It includes a software write-protection mechanism to prevent accidental data erasure. * **Sequential Read:** It supports reading the entire memory contents through a single continuous stream of clock cycles. --- ### 3. Pinout Configuration (SOT23-5) In the **TP** (Tape & Reel) SOT23-5 package, the pins are typically assigned as follows: | Pin Number | Symbol | Description | | :--- | :--- | :--- | | 1 | **S** | Chip Select (Active High) | | 2 | **VSS** | Ground | | 3 | **D** | Serial Data Input | | 4 | **Q** | Serial Data Output | | 5 | **VCC** | Supply Voltage | | 6 | **C** | Serial Clock | --- ### 4. Part Number Breakdown Understanding the nomenclature helps in sourcing or substituting parts: * **M93C76:** Product Family (8 Kbit Microwire EEPROM). * **-R:** Operating Voltage range (1.8V to 5.5V). * **BN:** Package (SOT23-5). * **3:** Temperature range (-40 to +125 °C). * **TP:** Packing (Tape and Reel). ---