## CSTCE19M8V53-R0: Component Overview The **CSTCE19M8V53-R0** is a high-frequency **Ceramic Resonator** manufactured by Murata Manufacturing. It belongs to the CERALOCK® family and is commonly used as a timing element in microcontrollers and other digital circuits. --- ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 19.80 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% (over temperature) | | **Operating Temperature** | -20°C to +80°C | | **Capacitance (Built-in)** | 15 pF | | **Mounting Type** | Surface Mount (SMD) | | **Dimensions (L x W x H)** | 3.2 x 1.3 x 0.7 mm | | **Series** | CSTCE (Small-cap type) | --- ### Key Internal Features 1. **Built-in Load Capacitors**: Unlike quartz crystals that usually require external capacitors to form an oscillation circuit, this "CERALOCK" part has two internal capacitors connected to a common ground pin. This reduces the PCB footprint and component count. 2. **Ceramic Material**: It utilizes the mechanical resonance of piezoelectric ceramics. While less precise than quartz, it offers faster start-up times and lower costs. 3. **Reflow Soldering**: Designed for standard SMD manufacturing processes, it is highly resistant to heat during the soldering process. --- ### Comparison: Ceramic Resonator vs. Quartz Crystal | Feature | Ceramic Resonator (CSTCE) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±10-50 ppm) | | **Start-up Time** | Very Fast | Slow | | **Cost** | Low | High | | **Size** | Very Compact | Varies | | **Application** | Microcontrollers, USB, Toys | Clocks, Precision RF, GPS | --- ### Pin Configuration | Pin Number | Function | | :--- | :--- | | **1** | Input (Oscillator In) | | **2** | Ground (Common) | | **3** | Output (Oscillator Out) | --- ### Typical Application Circuit ```text Microcontroller (MCU) | [OSC_IN] ---- (Pin 1) [ CSTCE ] (Pin 3) ---- [OSC_OUT] | (Pin 2) | [GND] ```