The **CSTCE14M0V53Z-R0** is a specific surface-mount (SMT) ceramic resonator manufactured by **Murata Electronics**. It belongs to the CERALOCK® family, which is widely used as a timing source for microcontrollers and other digital circuits where high precision (like that of a crystal) isn't strictly necessary, but stability and small size are required. --- ### 1. Technical Specifications The part number follows a specific coding system that defines its electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 14.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% (over operating temperature) | | **Operating Temperature** | -20°C to +80°C | | **Built-in Capacitance** | 15 pF (Internal load capacitors) | | **Mounting Type** | Surface Mount (SMD) | | **Package Size** | 3.2 x 1.3 mm (EIA 1205) | --- ### 2. Key Features and Internal Components Unlike a standard 2-pin crystal, this ceramic resonator is a **3-pin device**. This architecture simplifies the PCB design significantly. * **Piezoelectric Ceramic Element:** The core of the device, which oscillates at 14 MHz when an electric field is applied. * **Integrated Load Capacitors:** The "V" in the part number indicates it includes internal capacitors (15 pF). You do not need to add external capacitors to the oscillator circuit, saving board space and reducing BOM (Bill of Materials) costs. * **Built-in Feedback:** The three pins consist of: 1. **Input** (to MCU OSC_IN) 2. **Ground** (Middle pin) 3. **Output** (to MCU OSC_OUT) --- ### 3. Comparison: Resonator vs. Crystal While both provide a clock signal, there are distinct differences to consider for your design: | Feature | Ceramic Resonator (CSTCE) | Quartz Crystal (HC-49/SMD) | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.005%) | | **Start-up Time** | Very Fast | Slow | | **Cost** | Lower | Higher | | **Size** | Small (Integrated Caps) | Larger (Requires External Caps) | | **Use Case** | General MCU clock, USB-Low Speed | Ethernet, High-speed USB, RF | --- ### 4. Typical Application Circuit When connecting this part to a microcontroller (like an AVR, STM32, or PIC), the wiring is straightforward: ```text Microcontroller +----------------+ | | | [OSC_IN] [OSC_OUT] +------|---------|-------+ | | _______|_________|_______ | [Pin 1] [Pin 2] [Pin 3] | | Input GND Output | <-- CSTCE14M0V53Z-R0 +____________________________+ | [Ground] ``` ---