The **CSTCE20M0V53-R0** is a surface-mount ceramic resonator developed by **Murata Manufacturing**. It is a timing device used to provide a stable clock frequency for microcontrollers and other digital circuits. --- ## 1. Technical Specifications The following table highlights the core electrical and physical parameters of the component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 20.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Load Capacitance** | 15 pF (Internal) | | **Operating Temperature Range** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | | **Package Size** | 3.2 x 1.3 mm (CSTCE Series) | | **Frequency Stability** | ±0.3% (over temp) | --- ## 2. Key Features * **Built-in Capacitors:** Unlike standard quartz crystals that require external load capacitors (C1 and C2), this ceramic resonator has the capacitors integrated into the package. This saves PCB space and reduces the Bill of Materials (BOM) cost. * **High Stability:** Part of the "CERALOCK" family, it offers higher stability than internal RC oscillators, though lower than high-precision quartz crystals. * **Small Footprint:** The 3213 (metric) size is ideal for compact consumer electronics. * **RoHS Compliant:** Suitable for modern lead-free manufacturing processes. --- ## 3. Circuit Configuration A typical application circuit involves connecting the resonator to the oscillator pins ($OSC_{IN}$ and $OSC_{OUT}$) of a microcontroller. ```mermaid graph LR MCU_OSC_IN --- Pin1[Resonator Pin 1] GND --- Pin2[Resonator Pin 2 - Center] MCU_OSC_OUT --- Pin3[Resonator Pin 3] ``` ### Pinout Description: 1. **Input/Output:** Connected to one side of the internal oscillation circuit. 2. **Ground (GND):** The center pin connects the internal capacitors to the common ground. 3. **Output/Input:** Connected to the other side of the oscillation circuit. --- ## 4. Typical Applications * **Microcontrollers:** Serving as the system clock for 8-bit or 16-bit MCUs. * **Consumer Electronics:** Remote controls, toys, and small appliances. * **Peripherals:** USB controllers and communication interfaces where ±0.5% frequency accuracy is acceptable. ---