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7.6 of http://www.st.com/resource/en/datasheet/stm32f446ze.pdf UFBGA-144, 12x12 raster, 10x10mm package, pitch 0.35mm; see section 7.4 of http://www.st.com/resource/en/datasheet/stm32f091vb.pdf WLCSP-64, 8x8 raster, 3.347x3.585mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/DM00257211.pdf WLCSP-49, 7x7 raster, 3x3mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/stm32f401vc.pdf WLCSP-49, 7x7 raster, 3.029x3.029mm package, pitch 0.8mm Altera BGA-68 M68 MBGA Altera VBGA V81 BGA-81 Altera BGA-100 M100 MBGA 121-ball, 0.8mm BGA (based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera UBGA U324 BGA-324 BGA-624, 25x25 grid, 21x21mm package, pitch 0.5mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00282249.pdf WLCSP-90, 10x9 raster, 4.223x3.969mm package, pitch 0.4mm; see section 7.2 of http://www.st.com/resource/en/datasheet/stm32f378vc.pdf WLCSP-72, 9x9 raster, 3.639x3.971mm package, pitch 0.4mm; see section 6.8 of http://www.st.com/resource/en/datasheet/stm32f746zg.pdf WLCSP-144, 12x12 raster, 7x7mm package, pitch 0.4mm; see section 6.1 of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for the physical act of transferring a copy, and you want finger ridges around the top edge. (Other "top.

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