The **CSTCE8M00G52Z-R0** is a small-form-factor ceramic resonator manufactured by **Murata Electronics**. It belongs to the CERALOCK® family and is widely used as a clock source for microcontrollers. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 8.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Load Capacitance** | 10 pF | | **Operating Temperature** | -20°C to +80°C | | **Package Type** | SMD (3.2 x 1.3 mm) | | **Resonant Impedance** | 40 Ω (Max) | | **Aging** | ±0.3% over 10 years | --- ### ## Key Features * **Integrated Capacitors:** Unlike standard quartz crystals, this ceramic resonator features **built-in load capacitors**. This eliminates the need for two external capacitors on the PCB, saving space and reducing BOM (Bill of Materials) costs. * **Compact Design:** The "CE" series utilizes Murata's proprietary packaging technology, making it extremely thin and suitable for high-density mounting. * **Stability:** While not as precise as a quartz crystal (which typically has tolerances in ppm), ceramic resonators offer faster start-up times and better mechanical shock resistance. --- ### ## Pin Configuration & Internal Structure The device typically has 3 pads in an SMD configuration: 1. **Input (1):** Connected to the MCU's XTAL_IN. 2. **Ground (2):** The center pin must be connected to the system ground (GND) for the internal capacitors to function. 3. **Output (3):** Connected to the MCU's XTAL_OUT. ```mermaid graph LR A[Input] --- B((Resonator)) B --- C[Output] A --- D[Internal Cap] C --- E[Internal Cap] D --- F[GND Pin] E --- F[GND Pin] ``` --- ### ## Comparison: Resonator vs. Crystal | Feature | Ceramic Resonator (CSTCE) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±10 to 50 ppm) | | **Cost** | Low | Higher | | **Size** | Very Small (Built-in caps) | Requires external caps | | **Start-up Time** | Fast | Slow | --- ### ## Applications * **Microcontrollers:** Serving as the main system clock for 8-bit or 16-bit MCUs. * **Consumer Electronics:** Remote controls, toys, and small appliances. * **Communication:** Low-speed USB peripherals and local bus timing.