{"id":7549,"date":"2025-06-20T11:41:22","date_gmt":"2025-06-20T09:41:22","guid":{"rendered":"https:\/\/www.heinpragt.nl\/?p=7549"},"modified":"2025-06-20T12:48:23","modified_gmt":"2025-06-20T10:48:23","slug":"crystal-quartz-resonators","status":"publish","type":"post","link":"https:\/\/www.heinpragt.nl\/?p=7549","title":{"rendered":"Crystal Quartz frequencies"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This is an overview of all the Crystal Quartz Resonator frequencies I have available with a short description of use.<\/p>\n\n\n\n<style> td { border: 1px solid gray !important; } <\/style>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><tbody><tr><td>Crystal Quartz Resonator 32.768 kHz (small)<\/td><td>Used in RTC circuits, the frequency 32768 Hz (32.768 KHz) is commonly used, because it is a power of 2 (2<sup>15<\/sup>) value. And, you can get a precise 1 second period (1 Hz frequency) by using a 15 stage binary counter.<\/td><\/tr><tr><td>Crystal Quartz Resonator 1.8432 Mhz (high)<\/td><td>\u00a0UART clock allows integer division to common baud rates up to 115,200(\u00d716\u00d71) or 230,400(\u00d78\u00d71). Since older UARTs used this frequency to derive common baud rates up to 115,200, then multiples of this frequency are able to do the same, such as 3.6864 \/ 5.5296 \/ 7.3728 \/ 9.216 \/ 11.0592 \/ 12.9024 \/ 14.7456 \/ 16.5888 \/ 18.432 \/ 20.2752 \/ 22.1184 \/ 23.9616 \/ 25.8048 \/ 27.648 \/ 29.4912 \/ 31.3344 \/ 33.1776 \/ 35.0208 \/ 36.864 \/ \u2026, and is why these MHz frequencies are commonly used.<\/td><\/tr><tr><td>Crystal Quartz Resonator 2.4576 Mhz (high)<\/td><td>UART clock allows integer division to common baud rates up to 38,400(\u00d716\u00d74) or 76,800(\u00d716\u00d72).<\/td><\/tr><tr><td>Crystal Quartz Resonator 3 MHz (high)<\/td><td>\u00a0&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 3.2768 MHz (high)<\/td><td>\u00a0Allows binary division to 100 Hz (32,768\u00d7100 Hz, or 215\u00d7100 Hz) and to 50 Hz, used in e.g. wattmeters and DC-AC converters.<\/td><\/tr><tr><td>Crystal Quartz Resonator 3.579545 Mhz (High)<\/td><td>NTSC M color subcarrier; see colorburst. More specifically, 5 * 7 * 9 \/ 88 = 3.57954 MHz. Because these are very common and inexpensive they are used in many other applications, for example DTMF generators. Also used in some Retro Pinball machines.<\/td><\/tr><tr><td>Crystal Quartz Resonator 3.58 Mhz (low)<\/td><td>\u00a0&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 3.6864 Mhz (High)<br>Crystal Quartz Resonator 3.6864 Mhz (Low)<\/td><td>UART clock allows integer division to common baud rates up to 230,400(\u00d716\u00d71) or 460,800(\u00d78\u00d71). Also used in W-CDMA systems.<\/td><\/tr><tr><td>Crystal Quartz Resonator 4 Mhz (high)<br>Crystal Quartz Resonator 4 Mhz (low)<\/td><td>\u00a0&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.032 Mhz (low)<\/td><td>UART clock allows integer division to common baud rates up to 7,200(\u00d716\u00d735) or 14,400(\u00d78\u00d735), used for some 1200, 2400, and 4800 baud modems.<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.096 Mhz (low)<\/td><td>Allows binary division to 1 kHz (212\u00d71 kHz). Used in ISDN systems.<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.1920 Mhz (High)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.194304 Mhz (high)<br>Crystal Quartz Resonator 4.194304 Mhz (low)<\/td><td>\u00a0allows binary division to 1 Hz and 32.768 kHz. Real-time clock. For DDS generators with 1 Hz step. Used in the original Game Boy.<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.433619 MHz (High)<\/td><td>\u00a0Used on original MK14\u00a0 \u00a0SC\/MP board<\/td><\/tr><tr><td>Crystal Quartz Resonator 4.9152 Mhz (low)<\/td><td>\u00a0Used in CDMA systems; divided to 1.2288 MHz baseband frequency as specified by J-STD-008. UART clock allows integer division to common baud rates up to 38,400(\u00d716\u00d78) or 76,800(\u00d78\u00d74).<\/td><\/tr><tr><td>Crystal Quartz Resonator 5 Mhz (high)<\/td><td>Common standard frequency.<\/td><\/tr><tr><td>Crystal Quartz Resonator 6 Mhz (low)<\/td><td>Common in low-speed (1.5\u00a0Mbit\/s)\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/USB\">USB<\/a>\u00a0devices such as computer keyboards.<\/td><\/tr><tr><td>Crystal Quartz Resonator 7.15909 Mhz (Low)<\/td><td>Used in old video cards &amp; computers.<\/td><\/tr><tr><td>Crystal Quartz Resonator 7.3778 Mhz (low)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 8 Mhz (high)<\/td><td>Common used in old computers.<\/td><\/tr><tr><td>Crystal Quartz Resonator  Mhz (low)<\/td><td>\u00a0Allows binary division to 1 kHz (213\u00d71 kHz). Used in ISDN systems. Used in OKI Speech Processor. Common audio clock, 256\u00d732 kHz (see also 11.2896, 12.288, 16.384, 18.4323, 22.5792, 24.576 MHz). Typical TDM\/PCM audio interface clock, 1\/6 of 49.152 MHz<\/td><\/tr><tr><td>Crystal Quartz Resonator 9.8304 MHz (high)<\/td><td>Used in CDMA systems (2\u00d74.9152 MHz); divided to 1.2288 MHz baseband frequency. UART clock allows integer division to common baud rates up to 38,400(\u00d716\u00d716) or 76,800(\u00d78\u00d716).<\/td><\/tr><tr><td>Crystal Quartz Resonator 10 Mhz (high)<br>Crystal Quartz Resonator 10 Mhz (low)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 10.7386 Mhz (Low)<\/td><td>Used in old video cards &amp; computers.<\/td><\/tr><tr><td>Crystal Quartz Resonator 11.0592 Mhz (high)<br>Crystal Quartz Resonator 11.0592 Mhz (Low)<\/td><td>Common used in old computers and serial I\/O chips.<\/td><\/tr><tr><td>Crystal Quartz Resonator 12 Mhz (high)<br>Crystal Quartz Resonator 12 Mhz (low)<\/td><td>\u00a0UART clock allows integer division to common baud rates up to 1,800(\u00d716\u00d7450) or 7,200(\u00d78\u00d7225)<\/td><\/tr><tr><td>Crystal Quartz Resonator 12.288 Mhz (low)<\/td><td>\u00a0Digital audio systems &#8211; DAT, MiniDisc, sound cards; 256\u00d748 kHz (28\u00d748 kHz). UART clock allows integer division to common baud rates up to 76,800(\u00d716\u00d720) or 256,000(\u00d716\u00d73)<\/td><\/tr><tr><td>Crystal Quartz Resonator 12.960 MHz (high)<\/td><td>UART clock allows integer division to common baud rates up to 1,800(\u00d716\u00d7450) or 7,200(\u00d78\u00d7225)<\/td><\/tr><tr><td>Crystal Quartz Resonator 13.56 Mhz (high)<br>Crystal Quartz Resonator 13.56 Mhz (low)<\/td><td>\u00a0Common contactless smartcard frequency (ISO\/IEC 14443). Also used as clock in some 433.92 MHz remote fob transmitters (multiplied by 32); 9.84375 MHz used for 315 MHz<\/td><\/tr><tr><td>Crystal Quartz Resonator 14.318 Mhz (low)<\/td><td>NTSC M color subcarrier (4\u00d73.579545 MHz). Common seed clock for modern PC motherboard clock generator chips, clock for ISA bus, also common on CGA and VGA cards and in some 8-bit computers. Exactly 315\/22 MHz. 4f(sc) sampling for NTSC or 525\/60 (raw image size 910\u00d7525, visible 768\u00d7475), SMPTE 244M standard.<\/td><\/tr><tr><td>Crystal Quartz Resonator 14.7456 Mhz (low)<\/td><td>Common used in old computers as the frequency is ideal for generating video signals.<\/td><\/tr><tr><td>Crystal Quartz Resonator 16 Mhz (high)<br>Crystal Quartz Resonator 16 Mhz (low)<br>Crystal Quartz Resonator 16 Mhz (small)<\/td><td>Common used in old and new computers. Pixel clock for Hercules Graphics Card. Also used for ZigBee, Bluetooth and BLE, WiFi.<\/td><\/tr><tr><td>Crystal Quartz Resonator 16.3825 Mhz (low)<\/td><td>UART clock allows integer division to common baud rates up to 115,200(\u00d716\u00d71) or 230,400(\u00d78\u00d71). Since older UARTs used this frequency to derive common baud rates up to 115,200, then multiples of this frequency are able to do the same, such as 3.6864 \/ 5.5296 \/ 7.3728 \/ 9.216 \/ 11.0592 \/ 12.9024 \/ 14.7456 \/ 16.5888 \/ 18.432 \/ 20.2752 \/ 22.1184 \/ 23.9616 \/ 25.8048 \/ 27.648 \/ 29.4912 \/ 31.3344 \/ 33.1776 \/ 35.0208 \/ 36.864 \/ \u2026, and is why these MHz frequencies are commonly used.<\/td><\/tr><tr><td>Crystal Quartz Resonator 18.432 Mhz (low)<\/td><td>UART clock allows integer division to common baud rates up to 230,400(\u00d716\u00d75) or 576,000(\u00d716\u00d72).<br>Audio clock allows integer division for 48 \/ 96 \/ 192 ksps. Integer division for 50 Hz and 60 Hz.<\/td><\/tr><tr><td>Crystal Quartz Resonator 20 Mhz (low)<br>Crystal Quartz Resonator 20 Mhz (low)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 21.32813 Mhz (high)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 22.1184 Mhz (Low)<\/td><td>UART clock allows integer division to common baud rates up to 460,800(\u00d716\u00d73) or 921600(\u00d78\u00d73). Twice the 11.0592\u00a0MHz frequency.<\/td><\/tr><tr><td>Crystal Quartz Resonator 22.33 Mhz (high)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 24 Mhz (high)<br>Crystal Quartz Resonator 24 Mhz (Low)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 25 Mhz (low)<\/td><td>&#8211;<\/td><\/tr><tr><td>Crystal Quartz Resonator 30 Mhz (High)<\/td><td>Common CPU clock.<\/td><\/tr><tr><td>Crystal Quartz Resonator 32 Mhz (low)<\/td><td>Common CPU clock and common crystal for\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/LoRa\">LoRa<\/a>\u00a0RF chips\u00a0<\/td><\/tr><tr><td>Crystal Quartz Resonator 36 Mhz (high)<\/td><td>Video Graphics Array pixel clock (VESA modes VGA 640\u00d7480@85 with hsync 43.3 kHz, SVGA 800\u00d7600@56 with hsync 35.2 kHz.[28] Pixel clock for SDTV PAL\/NTSC (FWVGA 960\u00d7480p@59.94, 960\u00d7576p@50).<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is an overview of all the Crystal Quartz Resonator frequencies I have available with a short description of use. Crystal Quartz Resonator 32.768 kHz (small) Used in RTC circuits, the frequency 32768 Hz (32.768 KHz) is commonly used, because it is a power of 2 (215) value. And, you can get a precise 1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7549","post","type-post","status-publish","format-standard","hentry","category-ned"],"_links":{"self":[{"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/posts\/7549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7549"}],"version-history":[{"count":2,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/posts\/7549\/revisions"}],"predecessor-version":[{"id":7554,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=\/wp\/v2\/posts\/7549\/revisions\/7554"}],"wp:attachment":[{"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.heinpragt.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}