The **CSTCC3M52G53-R0** is a surface-mount (SMD) ceramic resonator manufactured by **Murata Electronics**. It belongs to the CERALOCK® family, which is used to provide a stable clock signal for microcontrollers and other digital circuits. --- ## 1. Technical Specifications The following table summarizes the key electrical and physical parameters of this component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 3.52 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% (over temperature) | | **Built-in Capacitance** | 15 pF (C1 and C2) | | **Operating Temperature** | -20°C to +80°C | | **Package Size** | 7.2mm x 3.0mm (Case Style: CC) | | **Mounting Type** | Surface Mount (SMD) | --- ## 2. Key Features and Internal Structure ### Built-in Load Capacitors One of the most significant features of the `CSTCC` series is the **integrated load capacitors**. - Standard quartz crystals require two external capacitors to create the oscillation circuit. - The CSTCC3M52G53-R0 has these capacitors built into the ceramic substrate. - This saves PCB space and reduces the Bill of Materials (BOM) count. ### Ceramic vs. Quartz Crystal - **Start-up Time:** Ceramic resonators start up significantly faster than quartz crystals. - **Cost:** They are generally more cost-effective. - **Precision:** They are less precise than quartz (±0.5% vs. ±0.001%), making them suitable for microprocessors where extreme timing (like high-speed RF) isn't required, but general logic timing is. --- ## 3. Pin Configuration and Circuitry The device typically features **3 terminals**: 1. **Input (1):** Connects to the OSC_IN of the MCU. 2. **Ground (2):** The middle pin, connected to the circuit ground. 3. **Output (3):** Connects to the OSC_OUT of the MCU. --- ## 4. Application Examples - **Microcontrollers:** Providing the clock source for 8-bit or 16-bit MCUs. - **Consumer Electronics:** Used in remote controls, toys, and small appliances. - **Automotive:** Low-speed communication buses or dashboard controllers (where specific AEC-Q200 grades are met).