The **CSTCE12M2G52-R0** is a specific model of a **Ceramic Resonator** manufactured by Murata Electronics. It belongs to the **CERALOCK®** family, which is widely used as a cost-effective timing component for microprocessors and microcontrollers. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 12.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Load Capacitance** | 10 pF | | **Resonant Impedance** | 50 Ω (Max) | | **Operating Temperature Range** | -20°C to +80°C | | **Package Type** | SMD (Surface Mount Device) | | **Package Size** | 3.2 x 1.3 mm (3213 Metric) | --- ### 2. Functional Description Unlike a standard 2-pin crystal, the **CSTCE** series features three terminals because it includes **internal load capacitors**. * **Internal Capacitors:** These are integrated into the ceramic substrate, which eliminates the need for external capacitors on your PCB, saving board space and reducing BOM (Bill of Materials) costs. * **Pin Configuration:** 1. **Input:** Connected to the oscillator circuit of the MCU. 2. **Ground:** Connected to the system ground. 3. **Output:** Feedback loop to the oscillator circuit. --- ### 3. Comparison: Ceramic Resonator vs. Quartz Crystal It is important to understand where this part fits in the electronic hierarchy: | Feature | Ceramic Resonator (CSTCE) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±10ppm to ±50ppm) | | **Cost** | Low | High | | **Start-up Time** | Very Fast | Slower | | **Size** | Small (Integrated Caps) | Larger (Requires External Caps) | | **Best For** | USB, Microcontrollers, Toys | High-speed RF, Precision Clocks | --- ### 4. Circuit Implementation When using the CSTCE12M2G52-R0, the circuit layout is simplified. Below is a conceptual representation of how it connects to a Microcontroller (MCU). ```c // Example Pin Mapping for a generic MCU MCU_OSC_IN ---- [Pin 1: CSTCE] GND ---- [Pin 2: CSTCE] MCU_OSC_OUT ---- [Pin 3: CSTCE] ``` --- ### 5. Typical Applications * **Consumer Electronics:** Remote controls, white goods (washers/dryers). * **Computer Peripherals:** USB hubs, keyboards, and mice. * **Industrial:** Basic logic controllers and sensor interfaces where extreme timing precision is not critical.