<h3>SparkFun Clocks, Oscillators and Resonators</h3> This library contains the real-time clocks, oscillators, resonators, and crystals we use. <br> <br> We've spent an enormous amount of time creating and checking these footprints and parts, but it is <b> the end user's responsibility</b> to ensure correctness and suitablity for a given componet or application. <br> <br>If you enjoy using this library, please buy one of our products at <a href=" www.sparkfun.com">SparkFun.com</a>. <br> <br> <b>Licensing:</b> Creative Commons ShareAlike 4.0 International - https://creativecommons.org/licenses/by-sa/4.0/ <br> <br> You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage. <h3>HC49/U 11.6x4.6mm PTH Crystal (13.46mm height)</h3> <p><a href="https://www.digikey.com/Web%20Export/Supplier%20Content/Citizen_300/PDF/Citizen_HC49US.pdf?redirected=1">Example Datasheet</a></p> >NAME >VALUE <h3>3x8mm Cylindrical Can (Radial) PTH Crystal</h3> This is the "KIT" version, which has limited top masking for improved ease of assembly. <p>Example product: <a href="https://www.sparkfun.com/products/540">32kHz crystal</a></p> <p><a href="http://www.ecsxtal.com/store/pdf/ECS-3x8.pdf">Example datasheet</a> (ECS-3X8)</p> >NAME >VALUE <h3>2x6mm Cylindrical Can (Radial) PTH Crystal</h3> <p>Example product: <a href="https://www.sparkfun.com/products/540">32kHz crystal</a></p> <p><a href="http://www.ecsxtal.com/store/pdf/ECS-3x8.pdf">Example datasheet</a> (ECS-2X6)</p> >NAME >VALUE <h3>HC-49/UP 11.4x4.8mm SMD Crystal</h3> <p><a href="http://www.standardcrystalcorp.com/pdf%5Cc-3.pdf">Example Datasheet</a></p> >NAME >VALUE <h3>HC49/US 11.6x4.6mm PTH Crystal</h3> <p><a href="https://www.digikey.com/Web%20Export/Supplier%20Content/Citizen_300/PDF/Citizen_HC49US.pdf?redirected=1">Example Datasheet</a></p> >NAME >VALUE <h3>6.0x2.0mm Cylindrical Can (Radial) SMD Crystal</h3> <p><a href="http://cfm.citizen.co.jp/english/product/pdf/CMR200T.pdf">Example</a></p> >Name >Value <h3>5x3.2mm SMD Crystal</h3> <p>Example: <a href="https://www.sparkfun.com/products/94">16MHz SMD Crystal</a> (<a href="https://www.sparkfun.com/datasheets/Components/SPK-5032-16MHZ.pdf">Datasheet</a>)</p> >NAME >VALUE <h3>2x6mm Cylindrical Can (Radial) PTH Crystal</h3> This is the "KIT" version, which has limited top masking for improved ease of assembly. <p>Example product: <a href="https://www.sparkfun.com/products/540">32kHz crystal</a></p> <p><a href="http://www.ecsxtal.com/store/pdf/ECS-3x8.pdf">Example datasheet</a> (ECS-2X6)</p> >NAME >VALUE <h3>7x1.5mm MC-146 Flat Lead SMD Crystal</h3> <p><a href="https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-156_en.pdf">Example Datasheet</a></p> >Name >Value <h3>20-Pin SOIC (0.3" Wide)</h3> <p>Dimensions: ~0.5x0.3"</p> <p>Package used by Maxim DS3234 SPI RTC</p> <p><a href="http://pdfserv.maximintegrated.com/package_dwgs/21-0042.PDF">Package Outline</a> (W20#H2)</p> <p><a href="http://pdfserv.maximintegrated.com/land_patterns/90-0108.PDF">Land Pattern</a></p> >NAME >Value <h3>7x5mm, 4-Pin Oscillator (Polarized)</h3> <p><a href="http://www.farnell.com/datasheets/21116.pdf">Example Datasheet</a></p> >Name >Value <h3>7x5mm, 6-Pin FXO-HC73 Oscillator (Polarized)</h3> <p><a href="http://www.foxonline.com/pdfs/FXO_HC73.pdf">Example Datasheet</a></p> >NAME >VALUE <h3>7.6x3.8mm 3-Pin PTH Resonator</h3> <p>0.1" pitch</p> <p><a href="https://www.sparkfun.com/datasheets/Components/Resonator-16MHz.pdf">Example datasheet</a></p> >NAME >VALUE <h3>7.4x3.4mm 3-Pin SMD Resonator</h3> <p><a href="http://global.kyocera.com/prdct/electro/pdf/add_pdf/pbr_all_e.pdf">Example datasheet</a> (PBRC-H)</p> >NAME >VALUE <h3>5x3.2mm 2-pad SMD Crystal</h3> <p><a href="http://www.txccrystal.com/images/pdf/7a.pdf">Example Datasheet</a></p> >NAME >VALUE <h3>8-Pin SOIC 150mil</h3> <p>0.154" (3.9mm) width. Fits JEDEC packages (narrow SOIC-8).</p> <p>Used by DS1077 and DS1307 programmable oscillators</p> >NAME >VALUE <h3>3.2x1.3mm 3-Pin SMD Resonator</h3> <p><a href="http://www.murata.com/~/media/webrenewal/support/library/catalog/products/timingdevice/ceralock/p16e.ashx">Example datasheet</a> (CSTCE_VH3L)</p> >NAME >VALUE <h3>4.5x2.0mm 3-Pin SMD Resonator</h3> <p><a href="http://www.murata.com/~/media/webrenewal/support/library/catalog/products/timingdevice/ceralock/p16e.ashx">Example datasheet</a> (CSTCR_G15L)</p> >NAME >VALUE <h3>5.0x3.2 mm 4-SMD Oscillator (Polarized)</h3> <p><b>Size</b>: 0.197" x 0.126" (5.00mm x 3.20mm)<br> <b>Height</b>: 0.051" (1.30mm)</p> <p><a href="http://www.ctscorp.com/wp-content/uploads/2015/11/008-0250-0.pdf">Example Datasheet</a></p> >NAME >VALUE <h3>3.2 x 1.5mm SMD Crystal Package</h3> <p>Example: <a href="http://www.sii.co.jp/en/quartz/files/2013/03/file_PRODUCT_MASTER_50812_GRAPHIC03.pdf">SX-32S</a></p> >Name >Value <h3>3.2 x 2.5mm SMD Crystal Package</h3> <p>Example: <a href="http://www.digikey.com/product-search/en?keywords=SER3627TR-ND">SX-32S</a></p> >Name >Value SOIC, 0.15 inch width >NAME >VALUE <h3>2.0 x 1.6 mm Crystal</h3> <p><a href="http://www.murata.com/~/media/webrenewal/support/library/catalog/products/timingdevice/crystalu/p79e.ashx">Example Datasheet</a> (XRCGB_F_P)</p> >Name >Value <h3>Crystal (no ground pin)</h3> >NAME >VALUE 1 2 <h3>Maxim DS1077 - I2C Real-time clock (RTC)</h3> >NAME >VALUE <h3>Maxim DS1307 - I2C Real-time clock (RTC)</h3> >Name >Value <h3>Maxim DS3234 - Extremely Accurate SPI RTC</h3> >NAME >VALUE <h3>Active Oscillator w/ Enable Input</h3> >Name >Value <h3>Resonator</h3> >NAME >VALUE <h3>Crystal with Ground pin</h3> >VALUE 1 2 >NAME DS3231M I2C Real Time Clock. >NAME >VALUE <h3>Crystals (Generic)</h3> <p>These are <b>passive</b> quartz crystals, which can be used as a clock source for a microcontroller.</p> <p>Crystal's are two-terminal devices. They require external "load" capacitors to generate an oscillating signal.</p> <h3>Maxim DS1077 - I2C Real-time clock (RTC)</h3> <p>The DS1077 is a dual-output, programmable, fixed-frequency oscillator requiring no external components for operation. The DS1077 can be used as a processor-controlled frequency synthesizer or as a standalone oscillator.</p> <p>The DS1077 features a 2-wire serial interface that allows in-circuit on-the-fly programming of the programmable prescalers (P0 & P1) and divider (N) with the desired values being stored in NV (EEPROM) memory.</p> <p>SparkFun Products: <ul><li><a href="https://www.sparkfun.com/products/retired/99">Real Time Clock Module</a> (BOB-00099)</li></ul> <p><a href="http://datasheets.maximintegrated.com/en/ds/DS1077.pdf">Datasheet</a></p> <h3>Maxim DS1307 - I2C Real-time clock (RTC)</h3> <p>The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information.</p> <p>SparkFun Products: <ul><li><a href="https://www.sparkfun.com/products/12708">Real Time Clock Module</a> (BOB-12708)</li></ul> <p><a href="https://cdn.sparkfun.com/datasheets/BreakoutBoards/DS1307.pdf">Datasheet</a></p> <h3>Maxim DS3234 - Extremely Accurate SPI RTC</h3> <p>The DS3234 is a low-cost, extremely accurate SPI™ bus real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.</p> <p>SparkFun Products: <ul><li><a href="https://www.sparkfun.com/products/10079">Real Time Clock - DS3234</a> (COM-10079)</li> <li><a href="https://www.sparkfun.com/products/10160">SparkFun DeadOn RTC Breakout</a> (BOB-10160)</a></li></ul> <p><a href="https://www.sparkfun.com/datasheets/BreakoutBoards/DS3234.pdf">Datasheet</a></p> <h3>Oscillators (Generic)</h3> <p>These are <b>active</b> oscillators, which require a power source to generate their clock output. Most oscillators are configured to generate a set frequency (e.g. 16MHz).</p> <p>They have four pins: power, ground, output, and an enable input.</p> <h3>Resonators (Generic)</h3> <p>Ceramic resonators are clock-generating components, often used to control timing in microcontrollers. They usually have 3 pins: two pins for oscillation, and one pin for ground.</p> <p>Compared to crystals, resonators have worse tolerance, but are usually much cheaper. Plus, they have built-in load capacitors!</p> <p>These devices are used on boards like the <a href="https://www.sparkfun.com/products/11114">Arduino Pro 8MHz</a> and <a href="https://www.sparkfun.com/products/11113">Arduino Pro 16MHz</a>.</p> <h3>Crystals w/ Ground Pin (Generic)</h3> <p>These are <b>passive</b> quartz crystals, which can be used as a clock source for a microcontroller.</p> <p>Crystal's are usually two-terminal devices. A third terminal may be optionally connected to ground, as recommended by the manufaturer.</p> <h3>33 MHz 5x3.2mm Oscllator</h3> <p><ul><li>Standard 5.0mm x 3.2m 4-pad SMD package</li> <li>Frequency: 33MHz</li> <li>Frequency Stability: ±50ppm</li> <li>Operating Voltage: 3.3V</li> </ul></p> <p><a href="http://www.ctscorp.com/wp-content/uploads/2015/11/008-0250-0.pdf">Example datasheet</a></p> <p> SparkFun Products:</p> <ul><li><a href=”https://www.sparkfun.com/products/12773”>SparkFun CryptoCape</a></li> </ul></p> <h3>16MHz Resonator</h3> <p><a href="http://www.digikey.com/product-detail/en/murata-electronics-north-america/CSTCE16M0V53-R0/490-1198-1-ND/584635">Digikey Example</a></p> <p><ul><li>Frequency: 16MHz</li> <li>Frequency Stability: ±0.3%</li> <li>Frequency Tolerance: ±0.5%</li> <li>Capacitance: 15pF</li></ul></p> <p>SparkFun Products</p> <ul><li><a href=”https://www.sparkfun.com/products/13712”>SparkFun OpenLog</a></li> <li><a href=”https://www.sparkfun.com/products/12923”>SparkFun MicroView - OLED Arduino Module</a></li> </ul></p> <h3>8MHz Resonator</h3> <p><a href="http://www.digikey.com/product-detail/en/murata-electronics-north-america/CSTCE10M0G55-R0/490-1196-1-ND/584633">Digikey Example</a></p> <p><ul><li>Frequency: 8MHz</li> <li>Frequency Stability: ±0.2%</li> <li>Frequency Tolerance: ±0.5%</li> <li>Capacitance: 33pF</li></ul></p> <p>SparkFun Products</p> <ul><li><a href=”https://www.sparkfun.com/products/11114”>Arduino Pro Mini 328- 3.3V/8MHz</a></li> <li><a href=”https://www.sparkfun.com/products/12651”>SparkFun Digital Sandbox</a></li> </ul></p> <h3>26MHz Crystal w/ Ground Pin</h3> <p><a href="http://www.digikey.com/product-detail/en/epson/TSX-3225%2026.0000MF09Z-AC3/SER3627CT-ND/1802878">Digikey Example</a></p> <p><ul><li>Frequency: 26MHz</li> <li>Frequency Stability: ±9ppm</li> <li>Frequency Tolerance: ±10ppm</li> <li>Load Capacitance: 9pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/13907”>SparkFun ESP32 Thing</a></li> <li><a href=”https://www.sparkfun.com/products/13711”>SparkFun ESP8266 Thing Dev Board</a></li> </ul></p> <h3>16MHz Crystal</h3> <p><a href="http://www.digikey.com/product-search/en?keywords=535-9122-1-ND">Digikey Example</a></p> <p><ul><li>Frequency: 16MHz</li> <li>Frequency Stability: ±50ppm</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 18pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/12640”>Pro Micro -5V/16MHz</a></li> <li><a href=”https://www.sparkfun.com/products/10097”>SparkFun Serial Enabled LCD Kit</a></li> </ul></p> <h3>12.288MHz Crystal</h3> <p><a href="http://www.digikey.com/product-detail/en/abracon-llc/ABM3B-12.288MHZ-B2-T/535-9117-1-ND/675634">Digikey Example</a></p> <p><ul><li>Frequency: 12.288MHz</li> <li>Frequency Stability: ±50ppm</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 18pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/13720”>MP3 Trigger</a></li> <li><a href=”https://www.sparkfun.com/products/12660”>SparkFun MP3 Player Shield</a></li> </ul></p> <h3>32.768kHz Crystal</h3> <p><ul><li>Frequency: 32.768kHz</li> <li>Frequency Stability: ±20ppm</li> <li>Load Capacitance: 12.5pF (PTH-2X6 & SMD-3.2X1.5), 6pF (SMD-2X6)</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/11734”>SparkFun BigTime Watch Kit</a></li> <li><a href=”https://www.sparkfun.com/products/13990”>SparkFun nRF52832 Breakout</a></li> <li><a href=”https://www.sparkfun.com/products/12708”>SparkFun Real Time Clock Module</a></li> </ul></p> <h3>12.0MHz Crystal</h3> <p><ul><li>Frequency: 12.0MHz</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 18pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/12772”>SparkFun Logomatic</a></li> <li><a href=”https://www.sparkfun.com/products/9825”>Pocket AVR Programmer</a></li> </ul></p> <h3>4MHz Resonator</h3> <p><a href="http://www.digikey.com/product-search/en?keywords=490-1200-1-ND">Digikey Example</a></p> <p><ul><li>Frequency: 4MHz</li> <li>Frequency Stability: ±0.2%</li> <li>Frequency Tolerance: ±0.5%</li> <li>Capacitance: 15pF</li></ul></p> <p>SparkFun Products</p> <ul><li><a href=”https://www.sparkfun.com/products/13333”>SparkFun BadgerHack</a></li> </ul></p> <h3>8MHz Crystal</h3> <p><a href="http://www.futureelectronics.com/en/technologies/electromechanical/timing-devices/crystals/Pages/6008189-ABM3B-8.000MHZ-B2-T.aspx?IM=0">Datasheet Example</a></p> <p><ul><li>Frequency: 8MHz</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 18pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/12587”>Pro Micro -3.3V/8MHz</a></li> <li><a href=”https://www.sparkfun.com/products/13660”>WAV Trigger</a></li> </ul></p> <h3>24MHz Crystal</h3> <p><a href="http://www.sparkfun.com/datasheets/Components/AT-SMD-5x3.pdf">Datasheet</a></p> <p><ul><li>Frequency: 24MHz</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 12pF</li></ul></p> <p><b>SparkFun Products:</b> <ul><li><a href=”https://www.sparkfun.com/products/762”>USB Bit Whacker</a></li> </ul></p> <h3>16 MHz 7x5mm Oscllator</h3> <p><ul><li>Frequency: 16MHz</li> <li>Frequency Stability: ±50ppm</li> <li>Operating Voltage: 3.3V</li> </ul></p> <p><a href="http://www.futureelectronics.com/en/technologies/electromechanical/timing-devices/oscillators/Pages/9907304-FXO-HC735-16.aspx?IM=0"> Datasheet Example</a></p> <ul><li><a href=”https://www.sparkfun.com/products/11420”>SparkFun MiniGen</a></li> </ul></p> <h3>DS3231M Real Time Clock</h3> <p>Accuracy +/-5ppm. Battery Backup. 2.3V to 5.5V.</p> <p><a href="https://cdn.sparkfun.com/datasheets/Dev/Beagle/DS3231M.pdf">Datasheet</a></p> <h4>SparkFun Products</h4> <ul> <li><a href="https://www.sparkfun.com/products/12773">CryptoCape</a> (DEV-12773)</li> <li><a href="https://www.sparkfun.com/products/13183">SparkFun CryptoShield</a> (DEV-13183)</li> </ul> <h3>32MHz Crystal</h3> <p><a href="http://www.digikey.com/product-detail/en/murata-electronics-north-america/XRCGB32M000F2P00R0/490-9769-1-ND/4952013">Digikey Example</a> <p><ul><li>Frequency: 32MHz</li> <li>Frequency Stability: ±20ppm</li> <li>Frequency Tolerance: ±20ppm</li> <li>Load Capacitance: 6pF</li></ul></p> <p>SparkFun Products</p> <ul><li><a href=”https://www.sparkfun.com/products/13990”>SparkFun nRF52832 Breakout</a></li> </ul></p>