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Http://www.st.com/resource/en/datasheet/stm32l152zc.pdf WLCSP-64, 8x8 raster, 4.466x4.395mm package, pitch 0.4mm; https://www.latticesemi.com/view_document?document_id=213 UCBGA-81, 9x9 raster, 3.693x3.815mm package, pitch 0.35mm; see section 7.3 of http://www.st.com/resource/en/datasheet/stm32f042k6.pdf WLCSP-36, 6x6 raster, 2.605x2.703mm package, pitch 0.4mm; http://www.fujitsu.com/global/documents/products/devices/semiconductor/fram/lineup/MB85RS1MT-DS501-00022-7v0-E.pdf Infineon LFBGA-292, 0.35mm pad, 17.0x17.0mm, 292 Ball, 20x20 Layout, 0.8mm Pitch, https://www.st.com/resource/en/datasheet/stm32mp151a.pdf ST TFBGA-225, 13.0x13.0mm, 225 Ball, 15x15 Layout, 0.8mm Pitch, https://www.st.com/resource/en/datasheet/stm32h7b3ri.pdf ST TFBGA-257, 10.0x10.0mm, 257 Ball, 19x19 Layout, 0.8mm Pitch, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-bga/05081600_0_bga49.pdf https://www.analog.com/media/en/technical-documentation/product-information/assembly-considerations-for-umodule-bga-lga-package.pdf.

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