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EMMC, 1000Mbit Ethernet A20 Olimex Olinuxino LIME2 development board Common footprint for ECP5 FPGAs, 27.0x27.0mm, 756 Ball, 32x32 Layout, 0.8mm Pitch, https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf#page=28 FBGA-96, 14.0x9.0mm, 96 Ball, 9x16 Layout, 0.8mm Pitch, https://www.nxp.com/docs/en/package-information/98ASA00855D.pdf#page=1 TFBGA-196, 11.0x11.0mm, 196 Ball, 14x14 Layout, 0.75mm Pitch, http://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Series-Data-Sheet-DS60001476C.pdf#page=2956 FBGA-78, 10.6x7.5mm, 78 Ball, 9x13 Layout, 0.8mm Pitch, http://www.latticesemi.com/view_document?document_id=213 Analog Devices KS-4, http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/sc70ks/ks_4.pdf Analog Devices KS-4, http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/sc70ks/ks_4.pdf Analog Devices (Linear Tech), 133-pin BGA uModule, 15.0x15.0x4.92mm, https://www.analog.com/media/en/technical-documentation/data-sheets/4637fc.pdf MAPBGA 9x9x1.11 PKG, 9.0x9.0mm, 272 Ball, 17x17 Layout, 0.8mm Pitch, https://www.infineon.com/cms/en/product/packages/PG-LFBGA/PG-LFBGA-292-11/ LFBGA-100, 10x10 raster, 4.201x4.663mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f401vc.pdf WLCSP-49, 7x7 raster, 2.999x3.185mm package, pitch 0.5mm; see section 7.1.1 of http://www.st.com/resource/en/datasheet/stm32f401ce.pdf WLCSP-49, 7x7 raster, 3x3mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for ECP5 FPGAs, based on the footprint. Some options: Bourns PTL series, such as: Update README.md 40588ba725f2f6c7240cc5d95c2a8af539e27e15 Update README.md * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use your choice of sitching hardware). Consider aesthetics and prcticality of stand-offs from front panel. - Current design uses six IDC 2×8 connectors with 4 positions D 2 pin 0.6x1mm 0.375mm height package, https://www.ti.com/lit/ml/mpss034c/mpss034c.pdf, https://www.ti.com/lit/ds/symlink/tpd6e05u06.pdf USON, 14 Pin (https://www.ti.com/lit/ml/msop002a/msop002a.pdf), generated with kicad-footprint-generator JST VH series connector, B4B-XH-A (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Harting har-flexicon series connector, B15B-ZESK-D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-0230, 2 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-146-02-xxx-DV-BE, 46 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py HVQFN, 24 Pin (https://ww1.microchip.com/downloads/aemDocuments/documents/product-documents/package-drawings/24L-VQFN%E2%80%934x4x0.9mm-MJ-C04-00143b.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-140-02-xxx-DV-BE-A, 40 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 48 Pin (https://www.nxp.com/docs/en/package-information/98ASA00694D.pdf DFN8 2x2, 0.5P (https://www.onsemi.com/pub/Collateral/511AT.PDF On Semiconductor, SIP-38, 9x7mm, (https://www.onsemi.com/pub/Collateral/AX-SIP-SFEU-D.PDF#page=19 8-Lead Plastic VSON, 3x3mm Body, 0.5mm Pitch (http://www.allegromicro.com/~/media/Files/Datasheets/ACS711-Datasheet.ashx Allegro Microsystems PSOF-7, 4.8x6.4mm Body, 1.60mm Pitch (http://www.allegromicro.com/~/media/Files/Datasheets/ACS780-Datasheet.ashx Allegro Microsystems SIP-4, 1.27mm Pitch (http://www.allegromicro.com/~/media/Files/Datasheets/A1363-Datasheet.ashx Diodes SIP-3 Ammo.

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