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Pitch, https://pdfserv.maximintegrated.com/package_dwgs/21-100168.PDF XBGA-121, 11x11 raster, 10x10mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f103tb.pdf UFBGA-132, 12x12 raster, 7x7mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32f446ze.pdf UFBGA-169, 13x13 raster, 7x7mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32f051t8.pdf UFBGA-100, 12x12 raster, 10x10mm package, 0.5mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=260, NSMD pad definition (http://www.ti.com/lit/ds/symlink/bq51050b.pdf, http://www.ti.com/lit/an/snva009ag/snva009ag.pdf Texas Instruments, DSBGA, area grid, YBG pad definition, 1.468x0.705mm, 8 Ball.

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