### M93C46-RBN3TP Technical Overview The **M93C46-RBN3TP** is a 1-Kbit low-voltage serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is widely used for non-volatile storage in applications requiring small amounts of data retention without power. --- ### Core Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (1,024 bits) | | **Organization** | User-selectable: 64 x 16-bit or 128 x 8-bit | | **Interface** | MICROWIRE (3-Wire Serial) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | Up to 2 MHz | | **Package Type** | SOT-23-6 (indicated by "N3" in the part number) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | --- ### Key Pin Functions Since the M93C46-RBN3TP typically comes in a **SOT-23-6** package, the pinout is compact: 1. **S (Chip Select):** Activates the device when high. 2. **C (Serial Clock):** Synchronizes the data transfer. 3. **D (Serial Data Input):** Receives instructions and data. 4. **Q (Serial Data Output):** Outputs data or "Ready/Busy" status. 5. **VCC:** Power supply. 6. **VSS:** Ground. 7. **ORG (Organization):** Selects internal organization (8-bit or 16-bit). *Note: In 6-pin packages, this may be internally bonded to a specific state.* --- ### Functional Features * **Self-Timed Write Cycle:** The device includes an internal timer that automatically handles the write duration (typically 5ms). * **Ready/Busy Status:** During a write cycle, the Data Output (Q) pin can be polled to check if the internal write operation is complete. * **Data Retention:** Offers more than 40 years of data retention. * **Endurance:** Rated for more than 1 million write cycles. * **Sequential Read:** Allows reading the entire memory contents in a single continuous stream. --- ### Part Number Breakdown (M93C46-RBN3TP) | Code | Meaning | | :--- | :--- | | **M93** | STMicroelectronics MICROWIRE Serial EEPROM | | **C46** | 1-Kbit capacity | | **-R** | Operating Voltage: 1.8V to 5.5V | | **B** | Process technology (Variation code) | | **N3** | SOT-23-6 package | | **T** | Tape and Reel packaging | | **P** | ECOPACK2 (RoHS compliant/Lead-free) | --- ### Typical Applications * **Consumer Electronics:** Storing user settings, volume levels, or channel presets. * **Industrial:** Storing calibration constants and device identification. * **Networking:** MAC address storage for network interface cards.