The **M7S12FCJ-R** is a high-performance, automotive-grade Crystal Oscillator (SPXO) manufactured by **NDK (Nihon Dempa Kogyo Co., Ltd.)**. It is specifically designed to provide a stable clock signal for high-reliability applications. --- ### ## Technical Specifications Below are the primary electronic characteristics of the M7S12FCJ-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Crystal Oscillator (SPXO) | | **Output Type** | CMOS | | **Supply Voltage ($V_{cc}$)** | +1.8V to +3.3V (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 2.5 x 2.0 mm (SMD) | | **Standard Compliance** | AEC-Q100 / AEC-Q200 | | **Frequency Stability** | ±50 ppm to ±100 ppm (Depending on variant) | --- ### ## Key Electronic Features * **AEC-Q200 Qualified:** The "R" suffix and "M7" series designation typically indicate adherence to automotive stress test qualifications, making it suitable for Engine Control Units (ECUs) and Advanced Driver Assistance Systems (ADAS). * **Low Power Consumption:** Optimized for battery-operated automotive sensors and modules. * **Standby Function:** Includes a Tri-state (Enable/Disable) function on Pin 1, allowing the output to be high-impedance when the oscillator is not needed, saving system power. * **Compact Footprint:** The 2520 (metric) / 1008 (imperial) package is ideal for high-density circuit board designs. --- ### ## Pin Configuration Standard 4-pin layout for the 2520 package: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Standby (ST) | High or Open: Output active; Low: High Impedance | | **2** | GND | Ground Connection | | **3** | OUT | Clock Signal Output (CMOS) | | **4** | $V_{cc}$ | Power Supply Voltage | --- ### ## Typical Application Circuits When integrating this part into a PCB, a bypass capacitor is required between $V_{cc}$ and GND to filter high-frequency noise. ```c // Typical Connection Logic [Vcc] ----+---- [Pin 4: Vcc] | [Capacitor 0.01uF] | [GND] ----+---- [Pin 2: GND] [MCU_Clock_In] <--- [Pin 3: OUT] ```