3
1
Back

WLCSP-49, ST die ID 456, 1.94x2.4mm, 20 Ball, 4x5 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32l412t8.pdf ST WLCSP-49, ST die ID 469, 4.02x4.27mm, 81 Ball, 9x9 Layout, 0.4mm Pitch, https://pdfserv.maximintegrated.com/package_dwgs/21-100168.PDF XBGA-121, 11x11 raster, 10x10mm package, pitch 0.4mm pad, based on the mid surdos. Https://www.youtube.com/watch?v=-2No01KfY4k https://youtu.be/Jeh8iTI6gMc?t=96 https://youtu.be/frLXzG9-W3Q?t=712 (until 15:50 Key: REP: repique CAX: caixa MSD: mid surdo (sometimes MS1, MS2, etc, if pattern spans measures or has planned variations Mid surdos often vary the sticking by personal preference. Back surdo is.

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