The **M93C46-RMB6TG/S** is a specific variant of the 93C46 family of serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It is widely used for non-volatile storage of configuration data, calibration constants, and device parameters. --- ## 1. Technical Specifications This part belongs to the **Microwire** bus family, which is a 3-wire synchronous serial interface. | Parameter | Specification | | :--- | :--- | | **Memory Size** | 1 Kbit (1,024 bits) | | **Organization** | User-selectable: 64 x 16-bit or 128 x 8-bit | | **Interface** | Microwire (Serial Peripheral Interface variant) | | **Operating Voltage (Vcc)** | 1.8V to 5.5V (The "-R" denotes wide low-voltage range) | | **Clock Frequency** | Up to 2 MHz | | **Endurance** | 1 million write cycles (minimum) | | **Data Retention** | 40 years | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | --- ## 2. Part Number Breakdown Understanding the suffix helps identify the physical and electrical characteristics of the component: * **M93C46**: Base part number for the 1-Kbit Microwire EEPROM. * **-R**: Indicates the Low Voltage range (1.8V to 5.5V). * **MB**: Refers to the **UFDFPN8** (2x3 mm) package type. * **6**: Indicates the Industrial temperature range (-40°C to +85°C). * **TG**: Indicates Tape & Reel packing with Green/RoHS compliance. * **/S**: Usually denotes a specific manufacturing process or customer-specific sorting (often related to shrinking die sizes). --- ## 3. Pin Configuration (UFDFPN8) The device typically uses 8 pins to facilitate communication and power. | Pin Number | 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: x8) | | 7 | **DU** | Don't Use (Internal connection) | | 8 | **Vcc** | Supply Voltage | --- ## 4. Key Features * **Ready/Busy Status:** During a write cycle, the data output pin (Q) provides a status bit to indicate if the internal programming is complete. * **Sequential Read:** Allows for continuous data streaming across the entire memory array. * **Software Write Protection:** Includes instructions to enable or disable write operations to prevent accidental data corruption. * **Low Power Consumption:** Optimized for battery-powered applications with low standby current.