The **CSTCC3M84G56-R0** is a specific model of a **Ceramic Resonator** manufactured by Murata Electronics. It belongs to the CERALOCK® family and is primarily used for clock generation in microprocessors and microcontrollers. --- ## 1. Technical Specifications The following table summarizes the key electrical and physical parameters of this component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 3.84 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% (Over temp range) | | **Operating Temperature** | -20°C to +80°C | | **Built-in Load Capacitance** | 47 pF (Internal) | | **Mounting Type** | SMD (Surface Mount Device) | | **Package Size** | 7.2 x 3.0 mm | --- ## 2. Key Features and Components ### A. Piezoelectric Ceramic Element The core of the device is a piezoelectric ceramic. Unlike quartz crystals, which use silicon dioxide, these resonators use ceramic materials that vibrate at a specific frequency when an electric field is applied. ### B. Built-in Load Capacitors The "CC" in the part number indicates that this is a **three-terminal device** with integrated loading capacitors. * **Standard Crystals:** Require two external capacitors to ground to form an oscillation circuit. * **CSTCC Series:** The capacitors are built into the package, saving PCB space and reducing the component count. ### C. Package Design The "R0" suffix usually refers to the packaging style (Tape and Reel). The physical housing is designed to be wash-resistant and can withstand reflow soldering temperatures. --- ## 3. Circuit Application In a typical microcontroller circuit, the resonator is connected to the `OSC_IN` and `OSC_OUT` pins. Because the capacitors are internal, the center pin is simply connected to Ground (GND). ```mermaid graph LR MCU_Pin1[OSC_IN] --- ResonatorPin1[Input] MCU_Pin2[OSC_OUT] --- ResonatorPin3[Output] GND[System Ground] --- ResonatorPin2[GND / Common] ``` --- ## 4. Comparison: Ceramic Resonator vs. Quartz Crystal | Feature | Ceramic Resonator (CSTCC) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.001%) | | **Start-up Time** | Very Fast | Slower | | **Cost** | Low | High | | **Size** | Small (Built-in Caps) | Larger (Requires external Caps) | ---