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PCB More tweaks after pro review "clearance": 0.2, "diff_pair_gap": 0.25, "diff_pair_via_gap": 0.25, "diff_pair_width": 0.2, "line_style": 0, "microvia_diameter": 0.3, "microvia_drill": 0.1, "name": "Default", "pcb_color": "rgba(0, 0, 0, 0.000)", "schematic_color": "rgba(0, 0, 0, 0.000)", "track_width": 0.25, "via_diameter": 0.8, "via_drill": 0.4, More tweaks after pro review "design_settings": { "defaults": { PCB initial layout, no traces "copper_text_size_h": 1.5, "copper_text_size_v": 1.5, "copper_text_thickness": 0.3, PCB initial layout, no traces One SPST switch to disable the clock, and a licensee cannot impose that choice. This section is intended to apply CC0 to the extent required to remedy known factual inaccuracies. 3.5. Application of Additional Terms You may act only on Your own behalf and on Your own copyright statement to Your modifications and may only be modified in the Source form of the board, connecting a trace on one side to center of hole, with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, 12mm CR1220 battery holder, Memory Protection Devices P/N BA9VPC, http://www.memoryprotectiondevices.com/datasheets/BA9VPC-datasheet.pdf PP3 Battery Holder SMD Tactile Switch, B3SL Middle Stroke Tactile Switch with High Contact Reliability, Side-actuated Model, without Ground Terminal, with Boss Ultra-small-sized Tactile Switch with High Contact Reliability, Top-actuated Model, without Ground Terminal, with Boss SPST button tactile switch K switch dp3t ON-ON-ON D Switch, single pole triple throw, 3 position switch, SP3T K switch normally-open pushbutton push-button LCD illuminated right angle right angle right angle SPDT push button (https://www.alps.com/prod/info/E/PDF/Tact/SurfaceMount/SKRT/SKRT.pdf push horizontal SPST 1P1T straight NO SMTR C&K E-Switch sub miniature slide switch, right-angle, http://www.ckswitches.com/media/1422/js.pdf Surface Mount Tactile Switch for High-Density Mounting, 4.3mm height, https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3fs.pdf C&K Components SPST SMD PTS645 Series 6mm Tact Switch C&K Components, PTS 810 Series, Microminiature SMT Top Actuated, http://www.ckswitches.com/media/1476/pts810.pdf Light Touch Switch, https://industrial.panasonic.com/cdbs/www-data/pdf/ATK0000/ATK0000C374.pdf SMD SMT crystal Abracon ABM10 Abracon Miniature Ceramic Smd Crystal ABM3B http://www.abracon.com/Resonators/abm3b.pdf, 5.0x3.2mm^2 package Miniature Crystal Clock Oscillator TXCO Fordahl DFA S7-K/L, http://www.iqdfrequencyproducts.com/products/details/iqxo-70-11-30.pdf, hand-soldering, 5.0x3.2mm^2 package SMD Crystal Oscillator Seiko Epson SG-8002JC https://support.epson.biz/td/api/doc_check.php?mode=dl⟨=en&Parts=SG-8002DC, hand-soldering, 10.5x5.0mm^2 package SMD Watch Crystal MicroCrystal CC8V-T1A/CM8V-T1A series http://www.microcrystal.com/images/_Product-Documentation/01_TF_ceramic_Packages/01_Datasheet/CC8V-T1A.pdf, hand-soldering, 2.0x1.2mm^2 package SMD Crystal MicroCrystal CC4V-T1A series http://cdn-reichelt.de/documents/datenblatt/B400/CC4V-T1A.pdf, 5.0x1.9mm^2 package SMD Crystal Seiko Epson MC-306 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-306_en.pdf, hand-soldering, 8.0x3.2mm^2 package SMD Crystal Seiko Epson SG-8002CE https://support.epson.biz/td/api/doc_check.php?mode=dl&lang=en&Parts=SG-8002DC, hand-soldering, 10.5x5.0mm^2 package SMD Crystal Oscillator Seiko Epson SG-8002CA https://support.epson.biz/td/api/doc_check.php?mode=dl⟨=en&Parts=SG-8002DC, hand-soldering, 7.0x5.0mm^2 package Ultraminiature Crystal Clock Oscillator Abracon ASE series, http://www.abracon.com/Oscillators/ASEseries.pdf, 3.2x2.5mm^2 package SMD Crystal MicroCrystal MS1V-T1K 6.1mm length 2.0mm diameter http://www.microcrystal.com/images/_Product-Documentation/03_TF_metal_Packages/01_Datasheet/DS-Series.pdf SMD Crystal Seiko Epson MC-156 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-156_en.pdf.

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