The **CSTCE16M0V53A-R0** is a specific type of ceramic resonator manufactured by **Murata Electronics**. It belongs to the **CERALOCK®** product line and is widely used as a clock source for microcontrollers (MCUs) due to its high integration and stability compared to standard RC circuits. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 16.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Resonance Impedance** | 40 $\Omega$ (Max) | | **Built-in Load Capacitance** | 15 pF (Internal) | | **Operating Temperature** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | | **Package Size** | 3.2 x 1.3 mm (3213 metric) | --- ### 2. Physical Structure and Pinout The CSTCE series features a **3-terminal** design. Unlike standard 2-pin crystals, these resonators include built-in load capacitors, which simplifies the PCB layout and reduces the component count. 1. **Input (Pin 1):** Connected to the MCU's XTAL_IN. 2. **Ground (Pin 2):** Connected to the system ground. 3. **Output (Pin 3):** Connected to the MCU's XTAL_OUT. --- ### 3. Core Features * **Built-in Capacitance:** The "V" in the part number indicates built-in load capacitors (15 pF). This eliminates the need for two external capacitors, saving board space. * **High Stability:** While not as precise as a Quartz Crystal, it is significantly more stable than an internal RC oscillator, making it suitable for high-speed serial communication (like UART). * **Small Form Factor:** The "Chip" type (SMD) design is optimized for automated high-density assembly. * **Cost-Effective:** Generally cheaper and more robust against mechanical shock than quartz crystal counterparts. --- ### 4. Typical Applications * **Microcontrollers:** Serving as the main clock for 8-bit, 16-bit, or 32-bit MCUs. * **Consumer Electronics:** Used in remote's, white goods (washers/dryers), and small appliances. * **Communication:** Low-speed USB and standard UART timing. * **Automotive/Industrial:** Version variants exist for higher temperature thresholds (though this specific part is standard commercial grade). --- ### 5. Decoding the Part Number | Code | Meaning | | :--- | :--- | | **CSTCE** | Series: SMD Ceramic Resonator with Built-in Capacitance | | **16M0** | Frequency: 16.000 MHz | | **V** | Load Capacitance: 15 pF | | **53** | Individual Specification Code | | **A-R0** | Packaging: Plastic Tape & Reel (2,000 pcs or 3,000 pcs) |