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...
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.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- 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 serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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Prototyping & Wiring
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