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3.56x3.52mm, 64 Ball, 8x8 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32l412t8.pdf ST WLCSP-49, off-center ball grid, ST die ID 494, 3.3x3.38mm, 49 Ball, 7x7 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb15cc.pdf#page=119 ST WLCSP-52, ST die ID 469, 4.02x4.27mm, 81 Ball, 9x9 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb15cc.pdf#page=119 ST WLCSP-52, ST die ID.

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