Adafruit
16 MHz Ceramic Resonator / Oscillator
A 16 MHz ceramic resonator with built-in load capacitors, providing a simple clock source for microcontrollers. The 3-pin package has 0.1" (2.54 mm) pin spac...
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A 16 MHz ceramic resonator with built-in load capacitors, providing a simple clock source for microcontrollers. The 3-pin package has 0.1" (2.54 mm) pin spacing for direct breadboard use — connect the two outer pins to XTAL-in and XTAL-out (the package is symmetric, so either outer pin works for either connection) and the centre pin to ground.
With 0.5% frequency accuracy, ceramic resonators are suitable for general-purpose microcontroller clocking and UART baud rate generation. This 16 MHz resonator is a direct match for the Arduino Uno clock frequency, making it ideal for building Arduino-compatible circuits on a breadboard.
Specifications
- Frequency – 16 MHz
- Accuracy – ±0.5%
- Type – Ceramic resonator with built-in capacitors
- Pins – 3 (XTAL, GND, XTAL)
- Pin Spacing – 0.1" (2.54 mm), breadboard compatible
Ideal For
- Arduino-compatible breadboard builds (ATmega328P at 16 MHz)
- General-purpose microcontroller clock source
- UART and serial baud rate generation
Package Contents
- 1× 16 MHz ceramic resonator
Jargon buster
Plain-language definitions for the technical terms used above.
- ATmega328P
- An 8-bit microcontroller chip used on many Arduino Uno-compatible boards. Knowing the controller uses an ATmega328P helps you understand its memory, speed, pin compatibility, and the Arduino sketches it can run.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RF
- RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
- UART
- UART is a simple asynchronous serial interface that sends data over separate transmit and receive wires, usually labelled TX and RX, with both ends set to the same baud rate. It is a common way for microcontrollers and other serial devices to exchange data.
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