## CSTCE12M0G52A-R0: Technical Overview The **CSTCE12M0G52A-R0** is a ceramic resonator manufactured by **Murata Electronics**. It belongs to the **CERALOCK®** family, which are high-precision electronic components used to provide a stable clock signal for microcontrollers and other digital circuits. --- ### 1. Key Specifications The technical parameters of this specific part number are detailed below: | Feature | Specification | | :--- | :--- | | **Nominal Frequency** | 12.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.2% | | **Built-in Capacitance** | 10 pF | | **Operating Temperature** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | | **Package Size** | 3.2 x 1.3 mm | --- ### 2. Internal Components & Structure The CSTCE series is unique because it integrates several electronic functions into a single small package: * **Piezoelectric Ceramic Element:** The core of the device. It utilizes the mechanical vibration of ceramic material to create a highly stable electrical oscillation. * **Built-in Load Capacitors:** Unlike standard quartz crystals that require two external capacitors (usually 15-30pF) to complete the oscillation circuit, this part has them built-in. * **Three-terminal Design:** 1. **Input:** Connected to the MCU oscillator pin. 2. **Ground:** Connected to the system ground (required for the internal capacitors). 3. **Output:** Connected to the other MCU oscillator pin. --- ### 3. Advantages vs. Quartz Crystals While quartz crystals offer higher precision, ceramic resonators like the CSTCE12M0G52A-R0 are preferred in many applications for the following reasons: 1. **Space Saving:** Because the load capacitors are integrated, it reduces the total PCB footprint and component count. 2. **Cost-Effective:** Ceramic resonators are generally less expensive than high-precision quartz. 3. **Start-up Time:** They typically have a faster oscillation start-up time compared to crystals. 4. **Mechanical Robustness:** They are highly resistant to mechanical vibration and shock. --- ### 4. Typical Applications This specific 12MHz resonator is commonly found in: * **Microcontrollers (MCUs):** Providing the main system clock for 8-bit and 16-bit processors. * **USB Peripherals:** Devices requiring a steady clock for data transmission. * **Consumer Electronics:** Remote controls, white goods (washers/dryers), and toys. * **Automotive:** Non-safety critical systems like infotainment or body control modules. --- ### 5. Circuit Schematic Representation In a standard circuit, the connection is simplified as follows: ```text [ Microcontroller ] | | OSC1 OSC2 | | +-----+-------------+-----+ | (1) (3) | | [ RESONATOR ] | | (2) | +------------+------------+ | GND ```