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Http://www.st.com/resource/en/datasheet/stm32f303r8.pdf WLCSP-49, 7x7 raster, 3.294x3.258mm package, pitch 0.65mm UFBGA-32, 6x6, 4x4mm package, pitch 0.8mm TFBGA-121, 11x11 raster, 10x10mm package, pitch 0.8mm; http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#p495 TFBGA-216, 15x15 raster, 13x13mm package, pitch 0.5mm; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f103tb.pdf UFBGA-132, 12x12 raster, 10x10mm package, pitch 0.4mm; see section 6.1 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for the sake of code complexity. Odd values are -=1 verticalJackHoleSpacing = (panelInnerHeight - jackHoleRows * jackHoleDiameter) / (jackHoleRows); horizontalJackHoleSpacing = (hp*panelHp - jackHoleColumns * jackHoleDiameter) / (jackHoleColumns + 1); for(verticalOffset = [panelInnerOffset + verticalJackHoleSpacing/2 + jackHoleDiameter/2 : verticalJackHoleSpacing + jackHoleDiameter : panelInnerHeight + jackHoleDiameter] for(horizontalOffset = [horizontalJackHoleSpacing + jackHoleDiameter / 2 + hole_diameter + hole_margin*2; side_margin = (board_width - hole_hdist.

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