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0.4mm; https://www.latticesemi.com/view_document?document_id=213 UCBGA-81, 9x9 raster, 3.693x3.815mm package, pitch 0.8mm; see section 7.3 of http://www.st.com/resource/en/datasheet/stm32f042k6.pdf WLCSP-36, 6x6 raster, 2.61x2.88mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32l152ze.pdf WLCSP-143, 11x13 raster, 4.521x5.547mm package, pitch 0.4mm; see section 7.2 of http://www.st.com/resource/en/datasheet/stm32f429ng.pdf UFBGA-201, 15x15 raster, 13x13mm.

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